The present application relates to a high-nickel ternary precursor, a lithium-rich positive electrode material, and a preparation method. The preparation method comprises the following steps: adding a nickel-manganese solution, a titanium-source hydrogen peroxide solution, a precipitant solution, and a complexing agent solution simultaneously into a reaction mother liquor, and performing a co-precipitation reaction to obtain a high-nickel ternary precursor. In the preparation method provided by the present application, by adding Ti during the co-precipitation process and controlling the ratio of Li in the obtained lithium-rich positive electrode material, the capacity and stability of the obtained lithium-rich positive electrode material are improved.
C01G 53/44 - Oxydes complexes contenant du nickel et au moins un autre élément métallique contenant des métaux alcalins, p. ex. LiNiO2 contenant du manganèse
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
2.
PRODUCTION APPARATUS AND METHOD FOR CORE-SHELL PRECURSOR HAVING NORMALLY DISTRIBUTED PARTICLE SIZE
A production apparatus and method for a core-shell precursor having a normally distributed particle size. The production apparatus comprises a homogenization reactor (1), a stirring reactor (2), and a thickener (3) that are sequentially connected by means of pipes, and the thickener (3) is connected back to the stirring reactor (2) by means of a pipe, so as to form a material circulation loop. The production apparatus uses a continuous method to produce a core-shell precursor having a normally distributed particle size. In the production method, the homogenization reactor (1) and the stirring reactor (2) are used to synchronously perform a coprecipitation reaction, and the thickener (3) is used to achieve continuous reaction and particle size control, thereby obtaining the core-shell precursor having the normally distributed particle size.
A cathode material, and a preparation method therefor and the use thereof. The preparation method comprises the following steps: (1) mixing a vanadium source, a complexing agent and a high-molecular polymer with an organic solvent to obtain a mixed solution; (2) respectively performing an atomization treatment on the mixed solution and a metal salt solution, and respectively conveying the mixed solution and the metal salt solution with a gas into a spray pyrolysis furnace to perform mixed pyrolysis, so as to obtain a coated precursor; and (3) mixing the coated precursor with a lithium source or a sodium source, and sintering same to obtain a cathode material. By using a spray pyrolysis method, the tap density and uniformity of the precursor are improved while the precursor is coated, such that a cathode material having good performance can be prepared.
H01M 4/02 - Électrodes composées d'un ou comprenant un matériau actif
H01M 4/13 - Électrodes pour accumulateurs à électrolyte non aqueux, p. ex. pour accumulateurs au lithiumLeurs procédés de fabrication
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
H01M 4/60 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés organiques
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
4.
LARGE-PARTICLE LITHIUM-RICH MANGANESE-BASED PRECURSOR AND PREPARATION METHOD THEREFOR, AND POSITIVE ELECTRODE MATERIAL AND USE
GEM (SHENZHEN) SUPER GREEN TECHNOLOGY RESEARCH CENTER CO., LTD. (Chine)
Inventeur(s)
Xu, Kaihua
Xue, Zhuangzhuang
Hua, Wenchao
Zhang, Kun
Zhang, Jingjing
Ma, Yongsong
Wang, Jun
Liu, Hai
Du, Ke
Abrégé
The present application provides a large-particle lithium-rich manganese-based precursor and a preparation method therefor, and a positive electrode material and the use. The preparation method comprises: (1) introducing a first mixed salt solution, a precipitant solution and a complexing agent solution into a reaction base solution in a co-current mode, and performing a first co-precipitation reaction to obtain a first slurry; and (2) introducing a second mixed salt solution, a precipitant solution and a complexing agent solution into the first slurry obtained in step (1) in a co-current mode, and performing a second co-precipitation reaction to obtain a large-particle lithium-rich manganese-based precursor, wherein the second mixed salt solution contains an anionic surfactant. The anionic surfactant contained in the second mixed salt solution of the preparation method can reduce the surface tension of the reaction slurry, and alleviate the problem of uneven surface stress distribution in the synthesis process; in addition, in the preparation method, the anionic surfactant as such is negatively charged, and primary particles on the surface are more closely bonded through electrostatic attraction; furthermore, the preparation method involves a simple process and has low requirements for equipment.
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
5.
CORE-SHELL STRUCTURED POSITIVE ELECTRODE PRECURSOR, PREPARATION METHOD THEREFOR AND USE THEREOF
GEM (SHENZHEN) SUPER GREEN TECHNOLOGY RESEARCH CENTER CO., LTD. (Chine)
Inventeur(s)
Xu, Kaihua
Liu, Hai
Zhang, Kun
Hua, Wenchao
Wu, Yulou
Xue, Zhuangzhuang
Zhang, Jingjing
Zhang, Zhuolun
Abrégé
The present application provides a core-shell structured positive electrode precursor, a preparation method therefor and a use thereof. The core-shell structured positive electrode precursor sequentially comprises, from inside to outside, a precursor core and a precursor shell layer. The porosity of the precursor core is greater than that of the precursor shell layer, and primary grains in the precursor shell layer are directionally arranged in the radial direction of the precursor shell layer. The core-shell structured positive electrode precursor provided in the present application has a high tap density and a low impurity content, and can significantly reduce the sintering temperature when a single crystal positive electrode material is prepared, thereby effectively inhibiting the phenomenon of lithium-nickel mixing in the positive electrode material, avoiding agglomeration of particles of the positive electrode material, and improving the single crystallinity of the positive electrode material, and thus improving the electrochemical performance of a battery.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
C01G 53/82 - Composés contenant du nickel, avec ou sans oxygène ou hydrogène, et contenant plusieurs autres éléments
C01G 53/502 - Oxydes complexes contenant du nickel et au moins un autre élément métallique contenant des métaux alcalins, p. ex. LiNiO2 contenant du manganèse du type (MnO2)n-, p. ex. Li(NixMn1-x)O2 ou Li(MyNixMn1-x-y)O2 contenant du lithium et du cobalt
C01G 53/504 - Oxydes complexes contenant du nickel et au moins un autre élément métallique contenant des métaux alcalins, p. ex. LiNiO2 contenant du manganèse du type (MnO2)n-, p. ex. Li(NixMn1-x)O2 ou Li(MyNixMn1-x-y)O2 contenant du lithium et du cobalt avec le rapport molaire du nickel par rapport à tous les métaux autres que les métaux alcalins supérieur ou égal à 0,5, p. ex. Li(MzNixCoyMn1-x-y-z)O2 avec x ≥ 0,5
6.
METHOD FOR EXTRACTING METALS FROM SAPROLITE LATERITE NICKEL ORE
A method for extracting metals from saprolite laterite nickel ore includes: separating and grinding the saprolite laterite nickel ore to obtain a laterite nickel ore powder; mixing the laterite nickel ore powder, water, an acid, and a reducing agent to perform atmospheric pressure acid leaching to obtain a leaching residue and a leaching solution; adding a soluble fluoride salt and sodium salt to the leaching solution to obtain a silicon-aluminum residue and a de-silicon-aluminumed liquid; adding a phosphorus source to the de-silicon-aluminumed liquid, and performing solid-liquid separation to obtain an iron phosphate and a de-ironed liquid; subjecting the de-ironed liquid to a one-step cyclone electrolysis to obtain a zinc-chromium alloy and a one-step cyclone electrolyzed liquid; subjecting the one-step cyclone electrolyzed liquid to a two-step cyclone electrolysis to obtain a nickel-cobalt alloy, a manganese oxide, and a two-step cyclone electrolyzed liquid; and adding sodium carbonate to the two-step cyclone electrolyzed liquid for a precipitation reaction to obtain magnesium carbonate and a de-magnesiumed liquid. The disclosure achieves the short-flow separation and extraction of different valuable metal elements such as zinc, chromium, nickel, cobalt, and manganese in the saprolite laterite nickel ore, which is an economic, efficient, green, and environment-friendly extraction process.
C22B 3/22 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés physiques, p. ex. par filtration, par des moyens magnétiques
7.
PREPARATION METHOD FOR LITHIUM MANGANESE IRON PHOSPHATE POSITIVE ELECTRODE MATERIAL, POSITIVE ELECTRODE MATERIAL, AND LITHIUM-ION BATTERY
The present application provides a preparation method for a lithium manganese iron phosphate positive electrode material, a positive electrode material, and a lithium-ion battery. The preparation method comprises the following steps: (1) performing sand-milling treatment on first slurry to obtain second slurry; and (2) performing spray drying and three-stage sintering on the second slurry to obtain a lithium manganese iron phosphate positive electrode material, wherein the first slurry comprises a lithium source, a manganese source, an iron source, a phosphorus source, and a solvent. In the preparation method provided by the present application, the lithium manganese iron phosphate positive electrode material having a wide particle size distribution, high conductivity and high compaction density is obtained.
C01B 25/45 - Phosphates contenant plusieurs métaux ou un métal et l'ammonium
C01B 32/05 - Préparation ou purification du carbone non couvertes par les groupes , , ,
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
8.
AN INTERNAL AND EXTERNAL MAGNETIC SEPARATION MECHANISM
The application disclose an internal and external magnetic separation mechanism, including magnetic separation outer cylinder, external magnetic suction component, magnetic separation inner cylinder, inner magnetic suction component, the external magnetic suction component is arranged under the magnetic separation cylinder, and the magnetic separation outer cylinder can rotate relative to the external magnetic suction component; One end of the magnetic separation inner cylinder can rotate into the magnetic separation outer cylinder, the inner magnetic suction component is arranged between the magnetic separation outer cylinder and the magnetic separation inner cylinder and is located below the magnetic separation inner cylinder, the ore will first enter the magnetic separation inner cylinder for the first magnetic separation, and then flow to the magnetic separation outer cylinder, for the second magnetic separation. Extend the ore in the internal path of the magnetic separation mechanism and residence time, so that the ore has gone through two magnetic separation, effectively improve the effect of magnetic separation.
B03C 1/247 - Séparation magnétique agissant directement sur la substance à séparer le matériau étant déplacé sous l'effet de champs oscillantsSéparation magnétique agissant directement sur la substance à séparer le matériau étant déplacé sous l'effet de champs mobiles, p. ex. générés par des bobines magnétiques stationnairesSéparateurs à champ de Foucault, p. ex. à rampe glissante le matériau étant déplacé sous l'effet de champs mobiles obtenus par rotation d'un tambour magnétique
9.
A CLEANING STRUCTURE OF A HIGH-PRESSURE REACTION KETTLE STIRRING PADDLE BLADE
The application discloses a cleaning structure of a highpressure reaction kettle stirring paddle blade, including a reaction kettle, stirring device and cleaning device; The stirring device comprises a stirring shaft and a stirring paddle, the stirring shaft rotates along the axis in the vertical direction and is installed in the reactor, and its lower end extends into the chamber of the reactor, and the stirring paddle is installed at the lower end of the stirring shaft; The cleaning device comprises an installation shaft and a brush, the installation shaft rotates along the axis in the vertical direction and is installed in the reaction kettle and the stirring shaft is arranged at intervals, the brush is installed along the vertical direction and the brush is installed on the installation shaft, the brush is moved down to the stirring paddle when it is in the cleaning state, the brush is moved up to the surface of the slurry to avoid the state, and in the cleaning state, The brush is connected with the stirring paddle, and the installation shaft drives the brush to rotate. In this application, the blade of the stirring paddle is cleaned by a rotating brush to realize the scaling removal of the stirring paddle blade and avoid scaling on the stirring paddle blade, which will affect the work of the stirring paddle.
This invention discloses a high-pressure reactor with adjustable baffles, which includes a reactor body, several baffle components and stirring components. The baffle components are evenly spaced along the length of the reactor body and arranged inside the reactor body to divide the interior cavity of the reactor body into several isolated chambers. Each baffle component includes a fixed baffle, a movable baffle, and a lifting drive mechanism. The stirring components are respectively set in each of the isolated chambers. The beneficial effect of this invention is that during stirring, the first through-slot is staggered with the second through-slot to enhance the blocking effect on the material, thereby improving the stirring effect and the pressure leaching efficiency. After stirring is completed, the movable baffle is driven by the lifting drive mechanism to move and align the first through-slot with the second through-slot, allowing the material to quickly enter the next isolated chamber. Thus, this device can improve the blocking effect of the baffles on the material, enhance the stirring effect, and increase the pressure leaching efficiency without affecting production efficiency.
B01J 3/00 - Procédés utilisant une pression supérieure ou inférieure à la pression atmosphérique pour obtenir des modifications chimiques ou physiques de la matièreAppareils à cet effet
The present invention provides a method, device, and electronic apparatus that pertains to the technical field of CCD countercurrent washing for flocculant addition. The method involves determining the depth of the flocculant feed pipe within the thickening machine and measuring the distance. Curve fitting is then performed to establish the corresponding mapping relationship, which is used to identify the optimal filling point for the flocculant based on this relationship. This invention effectively determines both the depth and distance of the flocculant feeding tube in the thickening machine and analyzes the intrinsic correlation of filling points at varying concentrations and feeding speeds through a correlation calculation method. As a result, it enhances efficiency while ensuring thorough mixing of the slurry and flocculant.
This application disclosed a method of recycling the cycle of metallurgical wastewater of laterite nickel ore wet water, including the following steps: take laterite nickel ore high-pressure acid immersion fluid for circulating, CCD washing, iron aluminum and sinking MHP treatment; Filter to obtain the MHP sediment solution; Add alkali to the effluent to remove manganese, and filter to obtain MHP wastewater after manganese removal; Perform ion exchange to recover nickel and cobalt from the wastewater after removing manganese from MHP, obtain the ion exchanged solution and enriched nickel cobalt solution, and reuse the enriched nickel cobalt solution in the CCD washing process; After ion exchange, the liquid is subjected to extraction or ion selective membrane treatment to obtain magnesium rich and magnesium poor solutions; Part of the magnesium rich solution is reused in the MHP precipitation process, while the remaining part is evaporated and crystallized to obtain magnesium sulfate; The lean magnesium solution is electrolyzed by bipolar membrane, and the sodium hydroxide solution obtained is reused for iron and aluminum removal and MHP precipitation processes, while the sulfuric acid solution is reused for high-pressure acid leaching processes. This application improves the recovery and utilization rate of wastewater from wet metallurgy of laterite nickel ore, and the recovered intermediate products can be further purified or directly reused in the preliminary process.
This application discloses a dividtor for laterite nickel spiral chute, Including: outer cylinder, inner cylinder, several spiral pipes and several ore pulp discharge pipes, The inner tube is provided on the inside of the outer tube, The interior of the inner cylinder is connected with the ore slurry feed pipe, An annular chamber is formed between the outer wall of the outer cylinder and the inner wall of the inner cylinder; Several spiral tubes are evenly arranged on the peripheral side of the inner cylinder, And are all located in the annular chamber, One end of the spiral tube connects with the interior of the inner tube, The other end spirals tilted downward, Make the pulp discharged through the spiral tube in the annular chamber; Several pulp discharge pipes are evenly arranged on the periphery of the outer cylinder, And are connected with the annular chamber; This application designs the average split tank in the form of an inner and outer cylinder, The slurry does not produce the deposition inside of the inner cylinder, The discharge of the spiral tube can impact the bottom of the annular chamber formed between the inner and outer tubes, And make the slurry in the annular chamber, Avoid slurry deposition in the annular chamber, It is beneficial to improve the discharging efficiency.
This application relates to a dual-screw washing machine for laterite nickel ore, which includes a washing tank, a dual-screw device, a feed pipe, a flushing water pipe, a lifting device, and an automatic control unit. The washing tank comprises a bottom tank and an inclined tank interconnected therewith; the dual-screw device is arranged along the inclined tank; the feed pipe and the flushing water pipe are arranged towards the dualscrew device; the lifting device is connected to the dual-screw device to drive a part or the entire dual-screw device to move upwards away from the inclined tank; the automatic control unit is used to control the lifting device to act according to the shutdown signal of the dual-screw device and to drive the flushing water pipe to clean the dual-screw device and the inclined tank. Compared to existing technology, the dual-screw washing machine for laterite nickel ore provided by this application can lift the dual-screw device after it is shut down and drive the flushing water pipe to clean the dual-screw device and the inclined tank, avoiding the jamming of the device by pebbles and ore, and can also be directly started for the next washing, saving a lot of cleaning time and improving production efficiency.
B08B 1/32 - Nettoyage par des procédés impliquant l'utilisation d'outils par le mouvement d’éléments de nettoyage sur une surface utilisant des éléments de nettoyage rotatifs
15.
A KIND OF HYDROMETALLURGICAL PRE-NEUTRALIZATION AND REAL-TIME CONTROL SYSTEM AND METHOD FOR LATERITIC NICKEL ORE
The application relates to a laterite nickel ore hydrometallurgical pre-neutralization and real-time control system and method, the system includes: a pre-neutralization tank, a counter-current washing thickener, a detection tank, and a control device, the pre-neutralization tank is connected to the countercurrent washing thickener through the slurry discharge pipe, the detection tank is connected to the slurry discharge pipe and the washing inlet pipe of the counter-current washing thickener through the first detection pipe and the second detection pipe respectively, and the detection tank has a flocculant injector. The control device is used to obtain the flocculation and sedimentation effect signal in the detection tank and adjust the discharge flow rate of the slurry discharge pipe according to the flocculation and sedimentation effect signal. Compared with the prior technique, the system is provided with a detection tank between the pre-neutralization tank and the counter-current washing thickener, the pre-neutralized slurry and the washing water are input into the detection tank, and the flocculation and sedimentation effect is detected by using the control device, and the input flow rate of the pre-neutralized slurry is adjusted in time according to the sedimentation effect so that the pre-neutralized slurry maintains a good sedimentation effect when the countercurrent washing is carried out.
This application relates to a nickel laterite tailing confluence treatment system, which includes a multi-stage washing component, an iron and aluminum removal component, a tailing mixing component, and a tailing treatment component. The tailing mixing component is connected to the overflow end of the previous-stage washing unit of two adjacent washing units and to the underflow end of the iron and aluminum removal component. The discharge end of the tailing mixing component is connected to the next-stage washing unit of the two adjacent washing units. The tailing mixing component can receive the underflow from the iron and aluminum removal component. When the washing liquid overflows from one of the washing units and enters the tailing mixing component, it dilutes the underflow from the iron and aluminum removal component. The diluted mixture is then returned to the next-stage washing unit for further washing. Ultimately, the entire underflow from the iron and aluminum removal process is delivered to the multi-stage counter-current washing process, allowing for further recovery of nickel, cobalt, and manganese from the underflow of the iron and aluminum removal process. Meanwhile, the tailing treatment component processes the underflow after tailing mixing and the multi-stage counter-current washing process, significantly reducing the tailing treatment costs.
C22B 1/00 - Traitement préliminaire de minerais ou de débris ou déchets métalliques
C22B 3/22 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés physiques, p. ex. par filtration, par des moyens magnétiques
C22B 3/44 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés chimiques
The application discloses a uniform discharging control system and method for laterite nickel ore washing line, the uniform discharging control system of laterite nickel ore washing line comprises: a current signal acquisition module, a judgment module and a feeding speed control module, and the current signal acquisition module is used for connecting the motor of the belt conveyor to obtain the motor current value of the belt conveyor; the judgment module is used for judging the threshold interval where the motor current value of the belt conveyor is located; Described feeding speed control module is used for adjusting the feeding speed of the current plurality of feeders according to the correspondence between motor current threshold interval and feeding speed; The application can realize the adaptive control of the feeding speed to reduce the difference in the discharge weight of the gravel produced by the ore washing, so that the design load of the belt conveyor can be avoided to appear low or high, which is conducive to the efficient utilization of the equipment, and can reduce the risk of belt tearing of the belt conveyor simultaneously.
B08B 3/04 - Nettoyage impliquant le contact avec un liquide
B65G 43/02 - Dispositifs de commande, p. ex. de sécurité, d'alarme ou de correction des erreurs détectant une condition physique dangereuse des porte-charges, p. ex. pour stopper l'entraînement en cas d'échauffement
C22B 1/00 - Traitement préliminaire de minerais ou de débris ou déchets métalliques
18.
WASTE THICKENING EQUIPMENT AND RECYCLING TREATMENT SYSTEM FOR LATERITE NICKEL ORE HYDROMETALLURGICAL WASTEWATER
This application discloses a waste thickening equipment for laterite nickel ore hydrometallurgical wastewater, which includes a buffering device, a flocculation device, and a thickening device. The influent end of the flocculation device is connected to the buffering device, and the effluent end of the flocculation device is connected to the thickening device. The thickening device comprises a thickener, an overflow discharge structure, and an inclined plate sedimentation structure. The thickener is in communication with the flocculation device. The overflow discharge structure is fixed above the thickener and is used to discharge the supernatant liquid from the thickener. The inclined plate sedimentation structure is fixed below the overflow discharge structure and is used to promote the sedimentation of particulate matter in the thickener. The inclined plate sedimentation structure facilitates the sedimentation of particulate matter in the thickener, preventing the particles from entering above the inclined plate sedimentation structure. The overflow discharge structure guides the supernatant liquid from the thickener, and the inclined plate sedimentation structure of this application can guide the sedimentation of particles, thereby significantly reducing the flocculent particles in the overflow liquid and improving the thickening effect.
The present application discloses an internal structure of a diaphragm pump isolator, including a housing, a guide rod, a isolator and two elastic members. The shell has a piston cavity, the guide rod is mounted in the piston cavity, the isolator is slidably sleeved on the guide rod, and the two elastic members are respectively arranged at both ends of the guide rod. When the isolator moves to the end of the guide rod and contacts the isolator, the isolator compresses the elastic member to buffer the impact of the isolator. The guide rod is mounted in the piston cavity, and the isolator is slidably sleeved on the guide rod, so that the isolator can slide in the piston cavity. Dusleeve ring the operation of the diaphragm pump, the isolator will slide back and forth along the guide rod. When the isolator moves to the end of the guide rod, the isolator compresses the elastic member to buffer the impact of the isolator. Since the impact of the isolator is buffered by the elastic member, the isolator is prevented from being damaged by frequent severe impacts, thereby extending the service life of the isolator.
F04B 15/04 - Pompes adaptées pour travailler avec des fluides particuliers, p. ex. grâce à l'emploi de matériaux spécifiés pour la pompe elle-même ou certaines de ses parties les fluides étant chauds ou corrosifs
F04B 43/02 - "Machines", pompes ou installations de pompage ayant des organes de travail flexibles ayant des organes flexibles du genre plat, p. ex. des diaphragmes
20.
MULTI-STAGE FLASH EVAPORATION ACID RECYCLING SYSTEM
The present application relates to a multi-stage flash evaporation acid recovery system, which includes a preheating unit, a high-pressure reaction kettle, a flash evaporation unit, and a gas-liquid separator. The preheating unit comprises at least one preheating tower that is connected to the first feed port of the high-pressure reaction kettle for preheating the slurry. The flash evaporation unit includes at least one flash evaporation tank that is connected to the first discharge port of the high-pressure reaction kettle for flash evaporation of the post-reaction slurry. The steam outlet of the flash evaporation tank is connected via a steam pipe to the heat exchanger of the preheating tower. A gas-liquid separator is mounted on the steam pipe to separate sulfuric acid droplets from the steam. Compared to existing technology, the multi-stage flash evaporation acid recovery system provided by this application features a gas-liquid separator on the steam pipe of the flash evaporation tank, which separates and recovers the sulfuric acid from the steam. This design requires only the pipeline in front of the gas-liquid separator to be treated for corrosion resistance, thus avoiding scaling in the preheating tower, reducing the cost of pipeline corrosion treatment, and minimizing the waste of sulfuric acid.
B01D 45/08 - Séparation de particules dispersées dans des gaz ou des vapeurs par gravité, inertie ou force centrifuge par inertie par projection contre les diaphragmes séparateurs
The application discloses a liquid-sealed pump pipeline structure, which comprises a liquid supply component, a connected component and a monitoring component, a liquid supply component comprises a hydraulic pump, a first one-way valve and a liquid supply pipe, the hydraulic pump is connected with the liquid supply pipe one end, the first one-way valve is installed in the liquid supply pipe, the connected component comprises a second one-way valve and a connected pipe, one end of the connecting pipe is connected with one end of the liquid supply pipe away from the hydraulic pump, and the other end is connected with the autoclave. The monitoring component comprises a controller and a first hydraulic gauge, the first hydraulic gauge is located between the second one-way valve and the liquid supply pipe, the first hydraulic gauge is used to detect the hydraulic pressure in the connected pipe, the controller and the hydraulic pump and the first hydraulic gauge are electrically connected to control the hydraulic pump to the liquid supply pipe after the pressure in the connected pipe is below the threshold. It can accurately start the hydraulic pump for liquid, and avoid the technical problems of reducing the service life of the hydraulic pump by frequent wrong start of the hydraulic pump.
The application relates to a laterite nickel ore high-pressure leaching waste heat power generation system, comprising a high-pressure reactor, a flash unit, a gas-liquid separator, and a steam generator, the flash unit comprises a flash tank, the flash tank has a feed port, an outlet and a steam outlet, the feed port of the flash tank is connected to the slurry outlet of the high-pressure reactor, and the steam outlet of the flash tank is connected to a gas-liquid separator and a steam generator in turn. Compared with the prior technique, the laterite nickel ore high-pressure leaching waste heat power generation system provided in the present application utilizes a gas-liquid separator to remove the sulfuric acid mist contained in the steam, avoids the generator being corroded by sulfuric acid, and only needs to carry out anti-corrosion treatment on the pipeline located in front of the gas-liquid separator, reduces the pipeline anti-corrosion cost, and the sulfuric acid after the separation of the gas-liquid separator can be recycled simultaneously, and reduces the cost of sulfuric acid use.
This application relates to a sulfur dioxide scrubbing apparatus for acid production flue gas, which includes a cyclone, an intake pipe, a first reaction component, and a second reaction component. The cyclone has a spiral flow channel formed therein, as well as an intake, an exhaust, and a liquid outlet connected to the spiral flow channel. One end of the intake pipe is externally connected to acid production flue gas, and the other end is connected to the intake. The outlet of the first reaction component is connected to the intake pipe and is used to spray alkali liquid mist into the intake pipe to achieve preliminary desulfurization treatment of the acid production flue gas, which then enters the cyclone. The second reaction component sprays alkali liquid mist into the spiral flow channel for secondary desulfurization treatment of the acid production flue gas. The spiral flow channel not only extends the flow path of the flue gas to increase the reaction time and reduce the circulation spraying amount of alkali liquid per unit time but also facilitates the collection of the formed acidic liquid into a stream for discharge from the liquid outlet.
The present application discloses a laterite nickel ore washing line including washing equipment and dressing equipment along a stepped mountain, which includes a chain plate feeder, a cylindrical washing machine and a double spiral scrubbing machine; the winding device, a spiral chute, a shaker, and a magnetic separator along the stepped mountain; wherein the slurry outlet of the double spiral scrubbing machine is connected to the cyclone. This application depends on the ladder mountain construction, makes the pulp between the pulp in gravity by the above equipment below the equipment natural flow, avoid the extra pulp conveying power source, reduce the energy consumption of the pulp drive, thus reduce the construction cost and the late operating cost, at the same time, through the ladder of mountain to carry the equipment, reduce the cost of equipment frame, thus reduce the overall construction cost.
B03B 7/00 - Combinaisons de procédés ou d'appareils opérant par voie humide, avec d'autres procédés ou appareils, p. ex. pour la préparation des minerais ou cendres
C22B 1/00 - Traitement préliminaire de minerais ou de débris ou déchets métalliques
This application discloses an automatic discharge filter press including a frame, a moving assembly, and a number of filter plates arranged side-by-side and capable of setting an angle relative to the frame. The moving assembly drives to connect the filter plate to successively drive the filter plate to slide in the first direction relative to the frame. The blocking assembly includes a limiting member and a drive member connected to and used to drive the limiting member in the second direction, which at least partially extends to block the upper or lower side of the filter cake in the first direction; wherein the first direction is opposite to the second direction. The above automatic unloading filter press can vibrate the filter board in the process of releasing the filter cake, so as to effectively avoid the filter cake from sticking to the filter board.
This application discloses a compactor control system, including a compactor, a slurry injection unit and a controller, the top and bottom of the compactor have a pulp injection channel and a pulp discharge outlet; the pulp injection unit includes a flocculant delivery pump, a first buffer tank and a first valve, the flocculant delivery pump is connected to the thickener, the first valve is connected between the slurry injection channel and the first buffer tank. In this application, by connecting to the first buffer tank on the slurry injection channel of the thickening machine and storing the injected slurry in the frequency of the flocculant delivery pump, controlling the opening and operation of the first valve opening and closing, the flocculant injection amount cannot meet the balance demand of the slurry flow and density
The present application provides a dual-gradient positive electrode precursor material, a preparation method therefor, and a use thereof. The dual-gradient positive electrode precursor material comprises a gradient inner core and a gradient outer shell covering the gradient inner core. The gradient outer shell comprises an inner surface and an outer surface, wherein the inner surface is close to the gradient inner core, and the outer surface is away from the gradient inner core. The gradient inner core comprises a nickel element, a manganese element, and a doping element, and the gradient outer shell comprises a nickel element, a cobalt element, and a manganese element. From the core center of the gradient inner core to the outer surface of the gradient outer shell, the content of the nickel element gradually decreases, and the content of the manganese element gradually increases; from the core center of the gradient inner core to the surface of the gradient inner core, the content of the doping element gradually decreases; and from the inner surface of the gradient outer shell to the outer surface of the gradient outer shell, the content of the cobalt element gradually increases. The dual-gradient positive electrode precursor material of the present application allows the structural stability of the material to be significantly improved by means of a dual-gradient design in terms of composition and structure, thereby significantly improving the electrochemical performance of a battery.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 4/525 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de nickel, de cobalt ou de fer d'oxydes ou d'hydroxydes mixtes contenant du fer, du cobalt ou du nickel pour insérer ou intercaler des métaux légers, p. ex. LiNiO2, LiCoO2 ou LiCoOxFy
28.
AN ORE BLENDING SYSTEM FOR TILING VERTICAL TAKING AND DISPATCHING
The application discloses an ore blending system for tiling vertical taking and dispatching, including a storage bin, a feeding device, an ore separator device and a vertical fetching device. The storage bin is formed in the storage space for storing ore; The discharge port of the feeding device is connected with the storage space, which is used to successively import different ore points or batches of ore into the storage space; The ore separator device comprises a separator and a separator lifting structure, the separator lifting structure is fixed on the inner wall of the storage bin, the separator is connected with the separator lifting structure, and the separator lifting structure is used to drive the separator lifting, and the ore material in the storage space is divided into several parts along the vertical direction. The vertical fetching device is used to grasp each ore one by one. The structure of the ore blending system in this application is simple, and the ore blending can be completed without a large site and complex equipment, and the cost is low.
The present invention discloses a flow disturbance structure of a reactor., comprising a reactor, a stirring device, a spoiler and a driving device, wherein the stirring device is arranged in the reactor; the spoiler is movably installed on the inner wall of the reactor, and the spoiler is used to disturb the material inside; the driving device is connected to the spoiler and is used to drive the spoiler to move. The driving device drives the spoiler to move, and during the movement of the spoiler, the material on the rear side thereof will be disturbed to a certain extent, accelerating the dispersion of the material behind the spoiler, avoiding the formation of a wake zone, thereby solving the problem of material deposition and scaling.
B01F 35/53 - Récipients de mélange caractérisés par la configuration de l'intérieur, p. ex. chicanes pour faciliter le mélange des composants
B01F 27/87 - Mélangeurs à agitateurs tournant dans des récipients fixesPétrins avec des agitateurs tournant autour d'un axe sensiblement vertical le récipient étant divisé en compartiments superposés
B01F 27/90 - Mélangeurs à agitateurs tournant dans des récipients fixesPétrins avec des agitateurs tournant autour d'un axe sensiblement vertical avec des palettes ou des bras
B01J 19/18 - Réacteurs fixes avec éléments internes mobiles
C22B 3/22 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés physiques, p. ex. par filtration, par des moyens magnétiques
The present invention discloses a descaling agent injection structure for a reactor, comprising a reactor body, a hollow shaft, a driving mechanism, a pressurized conveying assembly, a circumferential dispersion member, and a propulsion-type stirring paddle. An injection port is provided at the top of the reactor body for injecting descaling agent from the top. the hollow shaft is rotatably connected to the reactor body. the output end of the driving mechanism is transmission-connected to the hollow shaft for driving the hollow shaft to rotate. the output end of the pressurized conveying assembly is connected to the top of the hollow shaft through a rotary joint. The present invention injects and diffuses the descaling agent at the bottom of the reactor body through the circumferential dispersion member, cooperates with the propulsion-type stirring paddle, and forms a descaling agent injection method of rapid turbulent mixing from bottom to top. Moreover, the descaling agent injection port at the top of the reactor body can simultaneously add the descaling agent from above, cooperates to realize the descaling agent injection from bottom to top, forms an infiltration mode of up and down convection, and promotes the mutual infiltration and mixing of the descaling agent and the ore slurry in the reactor body.
This application belongs to the field of water quality testing technology, specifically relating to a method for testing ammonia nitrogen in wastewater from the hydrometallurgical process of laterite nickel ore. The method includes the following steps: adding sodium thiosulfate and zinc sulfate to the wastewater, adjusting the pH with a boric acid-sodium hydroxide buffer solution to pH 9.5, and allowing the solution to stand; filtering, taking an appropriate amount of filtrate into a colorimetric tube, and adjusting the volume, then adding potassium sodium tartrate and Nessler's reagent, mixing well, and allowing it to stand; measuring the absorbance, and calculating the ammonia nitrogen concentration in the wastewater based on the absorbance. This method can effectively eliminate the interference from high sulfate content and metal ions in high-sulfate industrial wastewater. The resulting colorimetric system is highly stable and has the advantages of being simple to operate and providing reliable results. It holds significant importance for the testing and treatment of wastewater from the hydrometallurgical process of laterite nickel ore.
G01N 21/78 - Systèmes dans lesquels le matériau est soumis à une réaction chimique, le progrès ou le résultat de la réaction étant analysé en observant l'effet sur un réactif chimique produisant un changement de couleur
The application discloses a laterite nickel ore cylinder washing machine, including a vertical frame, an inner cylinder, an outer cylinder, a driving piece and a washing piece, the inner cylinder and the vertical frame are rotatably connected, including the first grid section, the washing barrel section and the second grid section fixed in turn along the direction of material transportation, and the outer cylinder sleeve is arranged on the outer surface of the first grid section and the second grid section. The discharging area is formed between the outer cylinder and the first grid section and the second grid section; The driving part is connected with the inner cylinder, driving the inner cylinder relative to the vertical frame rotation, the washing part is arranged in the inner cylinder, used to spray water into the inner cylinder, so that the mud ore with the water through the first grille section and the second grille section to the discharge area and discharge; The application adopts the way of both ends of the grid section and the middle washing barrel section, so that the ore material goes through the three processes of primary screening, mixed washing and fine screening, which can effectively improve the washing effect.
This application relates to a laterite nickel ore double screw washing system. It includes a double screw mining machine, a movable sieve and a conveyer belt. The double-screw ore washing machine has a slurry outlet. The slurry is derived from the slurry outlet. The movable sieve can drive the selected material to move from its feeding end to its discharging end. The conveyer belt is provided below the discharge end of the movable sieve: Ore is imported into the double screw washing machine. The double-screw ore washing machine scrubbed the ore material. The scrubbed slurry flows from the slurry outlet to the movable sieve. The movable sieve sieves the slurry, stops the scum in the slurry, and brings it down onto tbe conveyer belt. Via the conveyer belt, it is delivered to a designated location.
B03B 7/00 - Combinaisons de procédés ou d'appareils opérant par voie humide, avec d'autres procédés ou appareils, p. ex. pour la préparation des minerais ou cendres
C22B 1/00 - Traitement préliminaire de minerais ou de débris ou déchets métalliques
34.
METHOD FOR DETERMINING FLOCCULANT SELECTION AND DOSAGE IN LATERITE NICKEL ORE HYDROMETALLURGICAL PROCESS
The invention provides a method for determining the selection and dosage of flocculant in the hydrometallurgical process of laterite nickel ore, which belongs to the field of mineral processing technology. The method comprises: obtaining the first slurry parameters of the thickener, and determining the type of flocculant based on the first slurry parameters; The first slurry parameters include: the pH value of the slurry in the thickener and the potential value of the material particle surface; The second slurry parameters of the thickener are obtained, and the first sedimentation rate after adding flocculant and the second sedimentation rate without adding flocculant in the thickener are determined based on the second slurry parameters. The second slurry parameters include the feeding slurry parameters and the discharging slurry parameters of the thickener; Based on the first sedimentation rate and the second sedimentation rate, the dosage of the flocculant is determined. The method provided by the invention does not need to be determined manually through trial and error or experience, so as to solve the technical problems of low efficiency and error-prone in the existing methods of flocculant selection and dosage determination.
The low-grade nickel ore circulating heap leaching equipment provided in this invention includes: atmospheric pressure heap leaching pool, a number of acid pools corresponding one-to-one with the atmospheric pressure heap leaching pool, and an acid circulation structure. The discharge outlet of the atmospheric pressure heap leaching pool is connected to the acid pool, and the acid circulation structure is connected to the atmospheric pressure heap leaching pool and the acid pool. It is used to detect the nickel content in the acid pool and guide the liquid from a certain acid pool to a certain atmospheric pressure heap leaching pool based on the detection results. In this way, the circulating drip irrigation of acid solution can be realized to realize circulating leaching of nickel ore, so that the nickel in the acid solution can be gradually enriched, and the leaching of nickel can be realized without increasing the amount of acid solution, effectively reducing the treatment cost of low-grade nickel ore.
This application provides a belt anti-tear control method and system. The belt anti-tear control method includes S1, obtaining the linear relationship between the belt conveyor bearing load and the motor current; S2, set the first current interval, the second current interval and the third current interval in order from small to large; S3, when the motor current is in the first current interval, maintain the material import speed at the beginning of the belt conveyor, and make the belt conveyor continue to work; S4, when the motor current is in the second current interval, slow down the material introduction speed at the beginning of the belt conveyor, and make the belt conveyor continue to work; S5, when the motor current is in the third current interval, stop importing materials to the starting end of the belt conveyor, and make the belt conveyor continue to work. The belt tear control method provided in this application can avoid excessive load carried by the belt conveyor, and thus effectively prevent the belt tear, thus prolonging the belt service life
B65G 43/02 - Dispositifs de commande, p. ex. de sécurité, d'alarme ou de correction des erreurs détectant une condition physique dangereuse des porte-charges, p. ex. pour stopper l'entraînement en cas d'échauffement
The present invention discloses a feeding equipment for laterite nickel ore, including a rotating platform, a material unloading platform and a grabbing mechanism. A partition is provided on the top of the rotating platform to separate the top of the rotating platform into a first stacking pit and a second stacking pit. The rotating platform is used to rotate the first stacking pit and the second stacking pit to replace the position; the material unloading platform is arranged on both sides of the first stacking pit, and a stacking mechanism is arranged thereon to push the material on the material unloading platform from both sides to the middle stacking pit. The new type of laterite nickel ore feeding equipment provided by the present invention provides a material unloading platform for multiple transport vehicles to pour materials side by side, and the stacking mechanism is used to stack them centrally in the middle stacking pit, and then the two stacking pits are replaced by the rotating platform, and the grabbing mechanism is used to grab and put the ore, which avoids the queuing of transport vehicles and improves the efficiency of pouring ore.
B65G 47/14 - Dispositifs pour alimenter en objets ou matériaux les transporteurs pour alimenter en objets à partir de piles d'objets en désordre ou de tas d'objets en vrac disposant ou présentant les objets par des moyens mécaniques ou pneumatiques durant l'alimentation
38.
A TYPE OF REACTOR CLEANING AND DEMISTING EQUIPMENT
The application relates to reactor cleaning and demisting equipment, and the reactor cleaning and demisting equipment is detachably installed at the manhole of the reactor, comprising: a fan and several connecting arms, one end of the connecting arm is connected with the fan, and the other end of the connecting arm is used for detachable connection with the frame of the manhole. Compared with the prior technique, the reactor cleaning and demisting equipment provided in the application can be installed at the manhole of the reactor, and the water mist in the reactor is pumped out after the descaling is completed, and the temperature and humidity in the reactor are rapidly reduced, so that the water mist concentration is reduced to the level that people can enter, and the time of descaling operation is greatly shortened.
This application discloses a parallel cleaning pipeline structure for multiple flash tanks, which includes: multiple flash tank units, mixing tanks and multiple sets of connecting pipelines. The flash sealing tank inlets of the multiple flash tank units are connected to the slurry leaching outlet of the autoclave; the mixing tank is used to mix the slurry; the flash sealing tank outlets of multiple flash tank units are connected through connecting pipelines to the mixing tank, and each set of the connecting pipelines also has a communication pipeline connected with the hot water pipeline for sending hot water to the water tank of the next process through the hot water pipeline for reuse; this application can transport hot water to the water tank in the next process, and the hot water can be reused, while also avoiding any impact on the parameters of the normal production unit.
This application discloses a multistage overflow tank, including an intake tank and two overflow pool groups with two overflow outlet gates; each of which is arranged longitudinally at the first end of each of the other at the first end of the flow direction; each of the overflow pools includes two overflow pools arranged horizontally and connected at the bottom. This application through the pool join two overflow pool group, constitute two overflow path, each overflow path at the bottom and the overflow port, formed in the vertical level and horizontal level combined S-shaped channel, improve the effect of coagulation deposition, and can selectively close a overflow path, easy to clean, uninterrupted wastewater treatment.
The application provides a laterite nickel ore high pressure leaching slurry concentration control system and method, belongs to the field of metallurgical technology, the system includes: thickener, autoclave, cyclic leaching tank and automatic control device; The underflow of the thickener is connected with the feed end of the autoclave, and the discharge end of the autoclave is connected with the cyclic leaching tank; The automatic control device is used to obtain the iron ion concentration and silicon ion concentration in the cyclic leaching tank, and reduce the slurry concentration of the autoclave when the sum of iron ion concentration and silicon ion concentration exceeds the target concentration threshold. This application reduces the slurry concentration of the autoclave when the sum of the iron ion concentration and the silicon ion concentration exceeds the target concentration threshold, so as to realize the real-time regulation of the iron ion concentration and the silicon ion concentration in the slurry, avoid that more iron ions and silicon ions are leashed in the high pressure leaching stage, and affect the subsequent multi-stage counter current washing flocculation precipitation effect
This application discloses an acid addition device and high-pressure vessel. The acid addition device includes an acid addition pipe, a connecting assembly, multiple abutment components, and a transmission assembly. One end of the acid addition pipe extends into the high-pressure vessel through an acid addition port, and the acid addition pipe is rotatably set along its own axis. The connecting assembly is located at the middle part of the acid addition pipe and is sealedly connected to the end surface of the acid addition port. Multiple abutment components are spaced along the circumference of the acid addition pipe and are movable in the radial direction of the acid addition pipe. When the abutment components move away from the acid addition pipe, they abut against the side wall of the acid addition port to fix the acid addition pipe. The transmission assembly connects the abutment components with the acid addition pipe, driving the abutment components to move radially along the acid addition pipe through the rotation of the acid addition pipe. This application uses the abutment components to abut against the side wall of the acid addition port, thereby fixing the part of the acid addition pipe that extends into the reaction vessel. This solves the problem of short service life of the acid addition pipe due to fatigue damage caused by shaking during the acid addition process.
The present application belongs to the technical field of hydrometallurgy. Disclosed is a method for precipitating MHP via magnesium activation. The method comprises the following steps: S1, mixing a magnesium-containing solution with a sodium hydroxide solution, and then carrying out a precipitation reaction for 3-5 min to obtain a precipitant; S2, immediately mixing the precipitant with a solution obtained after the removal of iron and aluminum from lateritic nickel ore, and then carrying out a first-stage nickel-cobalt precipitation reaction to obtain a first-stage nickel-cobalt precipitation slurry; S3, carrying out a first thickening treatment on the first-stage nickel-cobalt precipitation slurry to obtain a first thickener underflow and a first thickener overflow; and S4, filtering the first thickener underflow to obtain an MHP product. In the present application, the magnesium-containing solution and the sodium hydroxide solution are mixed, and then the first-stage nickel-cobalt precipitation reaction is carried out immediately after the magnesium solution and the sodium hydroxide solution are controlled to be mixed and reacted for 3-5 min; therefore, a high-purity and high-quality MHP product can be obtained. Moreover, the entire method is simple, and is convenient for large-scale industrial application.
The present application discloses a method for preparing a manganese electrowinning solution from laterite nickel ore, comprising the following steps: adding an acid to a manganese slag underflow of laterite nickel ore for pretreatment, followed by filter pressing to obtain pretreated manganese slag; slurrying the pretreated manganese slag to obtain a manganese slurry; adding an acid to the manganese slurry for manganese leaching, followed by filter pressing to obtain a manganese leachate and leaching residue; adding a neutralizing agent to the manganese leachate for neutralization, followed by filter pressing to obtain a neutralized manganese solution and neutralization residue; adding a heavy metal impurity removal agent to the neutralized manganese solution for impurity removal, followed by filter pressing to obtain a manganese solution and filter residue; adding an additive to the manganese solution for manganese electrowinning to obtain a manganese plate and a post-electrowinning manganese solution; and reusing the post-electrowinning manganese solution as a slurrying liquid in the slurrying process. This patent proposes, for the first time, a low-cost industrialized process for manganese recovery and utilization from laterite nickel ore, solving the problems of manganese resource waste in a laterite nickel ore metallurgical process and pollution caused by manganese slag landfilling.
C22B 3/06 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques acides
C22B 3/44 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés chimiques
C25C 1/10 - Production, récupération ou affinage électrolytique des métaux par électrolyse de solutions des métaux du groupe du fer, de métaux réfractaires ou du manganèse du chrome ou du manganèse
45.
METHOD FOR PREPARING MANGANESE ELECTROWINNING SOLUTION FROM LATERITE NICKEL ORE ON BASIS OF CONTINUOUS RESIN PROCESS
The present application discloses a method for preparing a manganese electrowinning solution from laterite nickel ore on the basis of a continuous resin process. The method comprises the following steps: using a multi-stage continuous resin process to adsorb manganese in an MHP filtrate prepared from laterite nickel ore to obtain a manganese-adsorbed resin; desorbing the manganese-adsorbed resin using a post-electrowinning manganese solution to obtain a manganese desorption solution; adjusting the pH value of the manganese desorption solution to remove iron and aluminum, so as to obtain an iron- and aluminum-removed manganese solution; adding a heavy metal impurity removing agent such as MnS, BaS, and sodium dimethyldithiocarbamate to the iron- and aluminum-removed manganese solution for impurity removal, to obtain a manganese electrowinning solution; performing manganese electrowinning using the manganese electrowinning solution to obtain an electrowon manganese plate and a post-electrowinning manganese solution; and recycling the post-electrowinning manganese solution as a desorption solution to the next round of resin desorption process. By recycling the post-manganese electrowinning solution to the resin desorption process, the present application not only simplifies the process from manganese recovery to utilization, but also reduces the costs of manganese resource recycling and application, thereby solving the industrialization problem of manganese recycling and utilization in existing new energy enterprises.
C22B 3/24 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés physiques, p. ex. par filtration, par des moyens magnétiques par adsorption sur des substances solides, p. ex. par extraction avec des résines solides
C22B 3/44 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés chimiques
C25C 1/10 - Production, récupération ou affinage électrolytique des métaux par électrolyse de solutions des métaux du groupe du fer, de métaux réfractaires ou du manganèse du chrome ou du manganèse
A preparation system for a precipitant used in MHP precipitation, comprising a sodium hydroxide storage tank (1), a first-stage nickel-cobalt precipitation underflow storage tank (2), a dilution liquid introduction mechanism (3), and a seed crystal tank (4). The sodium hydroxide storage tank (1) is used for storing a sodium hydroxide solution. A liquid intake end of the first-stage nickel-cobalt precipitation underflow storage tank (2) is in communication with a first-stage nickel-cobalt precipitation apparatus and is used for storing part of an underflow from first-stage nickel-cobalt precipitation. The sodium hydroxide storage tank (1), the first-stage nickel-cobalt precipitation underflow storage tank (2), and the dilution liquid introduction mechanism (3) are in communication with a liquid inlet of the seed crystal tank (4) to respectively introduce the sodium hydroxide solution, the first-stage nickel-cobalt precipitation underflow, and a dilution liquid into the seed crystal tank (4). A liquid outlet of the seed crystal tank (4) is in communication with the first-stage nickel-cobalt precipitation apparatus. By means of adding nickel-cobalt hydroxide crystals from the first-stage nickel-cobalt underflow as seed crystals into the first-stage nickel-cobalt precipitation apparatus, better crystallization and growth of nickel-cobalt hydroxide crystals in the first-stage nickel-cobalt precipitation apparatus are promoted. The sodium hydroxide solution can also be diluted to ensure that, after being added to the first-stage nickel-cobalt precipitation apparatus, local over-alkalization does not occur, thereby improving the quality of MHP products.
The present application discloses a precipitant injection device and an MHP preparation system. The injection device comprises an alkali solution storage tank, a magnesium-containing solution storage tank, and mixing and injection mechanisms, wherein the alkali solution storage tank and the magnesium-containing solution storage tank are arranged beside a first-stage nickel and cobalt precipitation reaction tank; and the mixing and injection mechanisms are arranged at the top of the first-stage nickel and cobalt precipitation reaction tank, are connected to the alkali solution storage tank, the magnesium-containing solution storage tank, and the first-stage nickel and cobalt precipitation reaction tank via pipes, and are used for receiving an alkali solution from the alkali solution storage tank and a magnesium-containing solution from the magnesium-containing solution storage tank, mixing the alkali solution with the magnesium-containing solution, and then injecting the mixture into the first-stage nickel and cobalt precipitation reaction tank. In the present application, the alkali solution is first mixed with the magnesium-containing solution and then fed into the first-stage nickel and cobalt precipitation reaction tank; and after the alkali solution is mixed with the magnesium-containing solution, a magnesium hydroxide precipitate is formed, and when the magnesium hydroxide precipitate enters the first-stage nickel and cobalt precipitation reaction tank, the magnesium hydroxide precipitate can be quickly dissolved, thereby achieving an effect of slow release of the alkali solution, avoiding local excessive alkalinity inside the first-stage nickel and cobalt precipitation reaction tank, thus ensuring the precipitation effect inside the first-stage nickel and cobalt precipitation reaction tank and improving the quality of an MHP product.
Disclosed in the present application is a lateritic nickel ore leaching apparatus, comprising a leaching tank, a spraying mechanism and an ore container, wherein the leaching tank is internally provided with a cavity having an open top end, a spraying area is provided at the top of the leaching tank, and liquid can be contained in the cavity; the spraying mechanism comprises a moving member and a spraying member, the moving member being movably connected to the top end of the leaching tank and being capable of reciprocatingly moving in the spraying area, and the spraying member being connected to the moving member; and the material container is internally provided with a cavity having an open top end, and is also provided with a plurality of water leakage holes in communication with the cavity, the ore container is detachably connected to the leaching tank and is located in the spraying area, and the cavity can be used for holding ore. By using the detachable ore container, the present application solves the problem in the prior art wherein it takes a long time to clean up tailings and leaching continuity thus cannot be ensured.
The present application discloses a spiral chute for laterite nickel ore beneficiation, comprising: a spiral chute body (1), a material receiving structure (2), and a material guide structure (3). A material channel (22) of the material receiving structure (2) corresponds to a material discharge port of the spiral chute body (1). The material guide structure (3) comprises a plurality of groups of material guide members (31) arranged in parallel in the material channel (22). The plurality of groups of material guide members (31) all extend along the material flow direction, so as to divide the material channel (22) into a plurality of material guide areas (301). One end of the material guide structure close to a discharge end of the material channel (22) forms a fixed end fixedly connected to the material receiving structure (2), and the other end forms a movable end. The movable end is rotatably connected to the fixed end, so as to adjust the feeding width of each material guide area (301) by means of the rotation of the movable end around the fixed end. The present application enables accurate distribution of each grade of ore slurry, improving the accuracy and quality of ore slurry sorting.
B03B 5/62 - Lavage de matériaux en grains, en poudre ou en grumeauxSéparation par voie humide en utilisant des classificateurs hydrauliques, p. ex. des appareils de concentration à chute en spirale ou en hélice, du type à couloir ou à bassin
50.
HIGH-EFFICIENCY DESULFURIZATION SPRAY TOWER FOR ACID-CONTAINING TAIL GAS
The present application relates to a high-efficiency desulfurization spray tower for an acid-containing tail gas, which comprises a tower body, a plurality of baffles, an air intake pipe, and a spray assembly. A top portion of the tower body is provided with an exhaust end, and a bottom portion thereof is provided with a liquid discharge end. The plurality of baffles are sequentially arranged in the tower body in the vertical direction, and a top portion of a serpentine passage is in communication with the exhaust end. Each of the plurality of baffles is provided with a plurality of holes. One end of the air intake pipe is externally connected to a tail gas, and the other end thereof is in communication with a bottom portion of the serpentine passage, so as to allow the tail gas to flow upward along the serpentine passage. The spray assembly is arranged at the top portion of the tower body and has a spray end facing the uppermost baffle. The spray end of the spray assembly sprays a spray liquid onto the uppermost baffle. Part of the spray liquid traverses the holes of the plurality of baffles, forming multiple spray water curtains within the serpentine passage, while the remaining spray liquid flows downward along the serpentine passage. During a process in which the tail gas to be desulfurized traverses the multiple spray water curtains, said tail gas can further contact the spray liquid therebelow, effectively increasing the contact area between the tail gas and the spray liquid.
A concentrating table, comprising a table body (1), first riffles (2) and second riffles (3). The table body (1) is provided with a table surface (11); a water feeding trough (12) and an ore feeding trough (13) are provided on the front side of the table surface (11); and the table surface (11) is sequentially divided into a U-shaped groove portion (101) and a V-shaped groove portion (103) from front to back. Both sides of each first riffle (2) are provided with arc-shaped recesses; the first riffles (2) are arranged at equal intervals in the U-shaped groove portion (101) from front to back; and a U-shaped groove (201) is formed between two adjacent first riffles (2). Both sides of each second riffle (3) are inclined; and the second riffles (3) are arranged at equal intervals in the V-shaped groove portion (103) from front to back.
B03B 5/04 - Lavage de matériaux en grains, en poudre ou en grumeauxSéparation par voie humide en utilisant comme moyens principaux de séparation, des lits secoués, pulsés ou agités sur des tables à secousses
B03B 5/06 - Détails de construction des tables à secousses, p. ex. riffles
52.
ANTI-CLOGGING STRUCTURE FOR DISCHARGE PIPE OF HIGH-PRESSURE REACTION KETTLE
Disclosed in the present application is an anti-clogging structure for a discharge pipe of a high-pressure reaction kettle. The anti-clogging structure comprises a mounting structure, an ultrasonic transducer and a driving structure, wherein the mounting structure is arranged on one side of a discharge pipe and comprises a mounting channel and a mounting member, the mounting channel being in communication with the interior of the discharge pipe, and the mounting member being slidably arranged in the mounting channel; the ultrasonic transducer is mounted on the mounting member; and the driving structure is connected to the mounting member and is used for driving the mounting member to slide in the mounting channel, such that the ultrasonic transducer is mounted on the inner wall of the discharge pipe in an abutting manner. The present application can effectively reduce the adhesion and accumulation of materials inside the pipe, thereby reducing the risk of clogging of the discharge pipe of the high-pressure reaction kettle.
B01J 3/02 - Dispositifs d'alimentation ou d'évacuation appropriés
B08B 3/12 - Nettoyage impliquant le contact avec un liquide avec traitement supplémentaire du liquide ou de l'objet en cours de nettoyage, p. ex. par la chaleur, par l'électricité ou par des vibrations par des vibrations soniques ou ultrasoniques
53.
ENHANCED THICKENING MECHANISM FOR COUNTER-CURRENT DECANTATION (CCD)
The present application discloses an enhanced thickening mechanism for counter-current decantation (CCD), comprising a cylinder and a stirring mechanism. The upper part of the cylinder is provided with a flocculant adding pipe, the top of the cylinder is open for a supernatant to overflow into the cylinder, and a through hole is formed in the middle of the cylinder for a turbid liquid to enter the cylinder through the through hole. The stirring mechanism is arranged inside the cylinder and is used for stirring the liquid in the cylinder, and a stirring end of the stirring mechanism is arranged at the lower middle part of the cylinder. In the enhanced thickening mechanism for CCD provided by the present application, the supernatant overflows into the cylinder, the turbid liquid enters the cylinder through the through hole in the middle of the cylinder, and a flocculant is added into the cylinder; and mixed flocculation of the supernatant, the turbid liquid and the flocculant is realized under the action of stirring, thereby improving the flocculation settling effect, and reducing the turbidity degree of the output supernatant.
Disclosed in the present application is a front protective plate structure, comprising: a front protective plate body and a plurality of rectifying protruding ribs, wherein a material guiding channel configured to guide a medium to enter an impeller is formed inside the front protective plate body; and the plurality of rectifying protruding ribs are circumferentially arranged along an inner wall of the front protective plate body, and each of the rectifying protruding ribs is obliquely distributed in the direction of a center line of the front protective plate body. The structure can improve fluid flow characteristics, reduce eddies, increase the efficiency of a pump, and prolong the service life of the pump.
F04D 29/42 - Carters d'enveloppeTubulures pour le fluide énergétique pour pompes radiales ou hélicocentrifuges
F04D 7/04 - Pompes adaptées à la manipulation de liquides particuliers, p. ex. par choix de matériaux spéciaux pour les pompes ou pièces de pompe du type centrifuge les fluides étant visqueux ou non homogènes
55.
MECHANICAL SEAL SYSTEM FOR AUTOMATIC LIQUID REPLENISHING PUMP
The present application discloses a mechanical seal system for an automatic liquid replenishing pump, comprising: multiple mechanical seal sets, multiple seal circulation systems, an automatic liquid replenishing system, and a control system. The multiple mechanical seal sets are respectively arranged corresponding to multiple series-connected pump sets, each mechanical seal set comprises multi-stage seals, and the multi-stage seals are respectively arranged on multi-stage pumps of the corresponding series-connected pump set; liquid inlets and liquid outlets of the multiple seal circulation systems are respectively correspondingly connected to liquid outlets and liquid inlets of the multi-stage seals; the automatic liquid replenishing system comprises a liquid storage unit, a pumping unit, and multiple liquid replenishing units respectively connected to the seal circulation systems; a liquid outlet of the liquid storage unit is connected to the liquid replenishing units by means of the pumping unit; and the control system is connected to the liquid replenishing units. The present application is capable of outputting gradient pressures in parallel according to different terminal pressure requirements, thereby effectively managing the pressure gradients within seal cavities during operation of series-connected pump sets and improving the overall efficiency and reliability of the system.
The present application relates to the technical field of fluid machinery, and provides a method and apparatus for hydraulic design of a volute of a feed pump of a mineral slurry preheater, and an electronic device. The method comprises: determining a base circle diameter on the basis of an impeller diameter and a pump specific speed; determining the width of a volute on the basis of an impeller flow passage width, an impeller shroud thickness, and an impeller back vane height; determining the heights of different cross sections on the basis of the area of a cross section VIII and a flow volume of a feed pump, an average flow rate of a medium passing through the cross section VIII, a volute cross‑section top arc radius, and the width of the volute; determining the area of a throat cross section of the volute on the basis of the area of the cross section VIII and the pump specific speed; determining a throat width at a volute tongue cross section on the basis of the area of the throat cross section and the volute cross-section top arc radius; and determining a hydraulic design result of the volute on the basis of the base circle diameter, the heights of different cross sections, and the throat width at the volute tongue cross section. The present application can achieve the purpose of designing parameters of a volute of a feed pump of a mineral slurry preheater, thereby improving the pass rate of one-time volute casting.
G06F 30/28 - Optimisation, vérification ou simulation de l’objet conçu utilisant la dynamique des fluides, p. ex. les équations de Navier-Stokes ou la dynamique des fluides numérique [DFN]
57.
DUPLEX HIGH-CHROMIUM CAST IRON ALLOY, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
The present application discloses a duplex high-chromium cast iron alloy, and a preparation method therefor and an application thereof. The duplex high-chromium cast iron alloy comprises the following chemical components in percentage by mass: 1.0%-2.5% of C, 0.5%-2.0% of Si, 0.5%-2.0% of Mn, 30.0%-45.0% of Cr, 5.0%-9.0% of Ni, 1.0%-4.0% of Mo, 1.0%-4.0% of Cu, 0.1%-0.4% of V, 0.1%-0.4% of Ti, 0.2%-0.5% of rare earth, 0.1%-0.3% of N, and the remainder being Fe and inevitable impurities. The present application can improve the hardness, wear resistance, high-temperature mechanical properties and thermal fatigue resistance of alloys while maintaining corrosion resistance, and can ultimately be suitable for various industrial fields requiring high strength, wear resistance, corrosion resistance, and high-temperature resistance.
The present application relates to a mineral slurry conveying mechanism for conveying mineral slurry into a feed well of a thickener, the mechanism comprising a mixing tank, a conveying pipe, an agitator, and a dilution assembly. The mixing tank is provided with a feed end for feeding mineral slurry. One end of the conveying pipe is flush with and communicates with an inner bottom wall of the mixing tank, and the other end of the conveying pipe passes through the thickener and communicates with a side wall of the feed well. The conveying pipe is positioned at a height below a liquid level of the thickener. The agitator is mounted on the mixing tank, and an output end of the agitator extends into the mixing tank. The dilution assembly connects the mixing tank and a supernatant outlet of the thickener. As a supernatant of the thickener overflows, the liquid level in the feed well tends to decrease; at this time, the liquid in the mixing tank can be conveyed into the feed well under the action of water pressure, thereby prolonging the residence time of the liquid in the mixing tank and ensuring thorough mixing of the mineral slurry with the supernatant. At the same time, because one end of the conveying pipe is flush with and communicates with the inner bottom wall of the mixing tank, sedimentation within the mixing tank can be avoided.
Provided in the present application are an agglomeration-theory-based flocculation control method and apparatus, and an electronic device and a medium. The method comprises: acquiring feed volumetric concentration and liquid phase viscosity of a thickener, and on the basis of the feed volumetric concentration, determining the ratio of the volume of bound-water-containing flocs to the volume of all flocs; on the basis of the feed volumetric concentration, the ratio of the volume of the bound-water-containing flocs to the volume of all the flocs, and the liquid phase viscosity, determining the current settling velocity of the flocs in the thickener; on the basis of the feed volumetric concentration, discharge volumetric concentration of the thickener, and a solid flux per unit time per unit area, determining a target settling velocity; and when the current settling velocity is less than N times the target settling velocity, adjusting the feed volumetric concentration, flocculant dosage or agitation rate of the thickener, wherein N>1. In the present application, flocculation, agglomeration and settling processes can be precisely regulated on the basis of feed volumetric concentration, flocculant dosage or an agitation rate of a thickener, thereby providing guidance and a basis for realizing the optimal agglomeration effect.
The present application belongs to the technical field of hydrometallurgy of laterite nickel ore. Provided are a method and process for preparing MHP by controlling crystallization in hydrometallurgy of laterite nickel ore. The method comprises: on the basis of a nucleation reaction condition, determining the crystal nucleus quantity of a plurality of crystal nuclei after an iron-aluminum-removed liquid has undergone a nucleation reaction; on the basis of a primary growth reaction condition, determining an average particle size of a plurality of grains after the plurality of crystal nuclei have undergone primary growth; and, on the basis of Metropolis algorithm, the crystal nucleus quantity, and the average particle size, determining a predicted particle size distribution of agglomerated grains after the plurality of grains have undergone secondary agglomeration and growth. On the basis of a predicted particle size distribution result, the present application can adjust the reaction conditions of the nucleation reaction and the primary growth reaction to control the crystal nucleus quantity and the average particle size, so as to obtain high-performance MHP products with better particle size distribution, thereby having a guiding effect on crystallization processes of MHP.
G16C 60/00 - Science informatique des matériaux, c.-à-d. TIC spécialement adaptées à la recherche des propriétés physiques ou chimiques de matériaux ou de phénomènes associés à leur conception, synthèse, traitement, caractérisation ou utilisation
The present invention discloses a slope gravity ore washing system and method, which includes a guiding component, a washing component, and a separation component, the guiding component consists of a slope body and several guiding plates. The slope body has a washing trough set at an incline, and the washing component introduces water flow into the washing trough. The separation component includes a foundation and a screen conveyor belt. The foundation has a pulp trough, and the screen conveyor belt is set above the pulp trough to receive materials discharged from the washing trough. The screen conveyor belt retains and conveys the ore in the material, allowing the pulp to permeate into the pulp trough. The ore slides along the washing trough under the action of gravity, and the water flow scours the sliding ore in the washing trough.
The invention provides a multi-stage combined leaching method for ultra-low grade laterite nickel ore, including: firstly, the raw laterite nickel ore slurry is treated by high pressure acid leaching to obtain the high pressure leaching tailings containing iron, aluminum and magnesium and the high pressure leaching solution containing nickel, cobalt and manganese. The mass percentage of nickel in the raw laterite nickel ore is less than 1.0%; Secondly, the high pressure leaching solution, laterite nickel ore slurry and acid solution were mixed to obtain the mixed solution, and the mixed solution was subjected to multi-stage atmospheric pressure leaching treatment, after concentration treatment, the final concentrated atmospheric pressure leaching solution and the final concentrated atmospheric pressure leaching slurry with the same concentration as the raw laterite nickel ore slurry. Finally, the final concentrated atmospheric pressure leaching solution and high pressure leaching tail residue were successively recycled leaching, multi-stage pre-neutralization, counter-current decantation washing, Fe/Al/Cr removal and MHP precipitation to obtain nickel and cobalt hydroxide products. the invention can effectively restrain the scaling rate of conventional high pressure acid leaching treatment and prolong the production cycle.
The present invention discloses a stirring system for a high-pressure reactor used in lateritic nickel ore processing, which includes a high-pressure reactor and multiple stirring devices. Inside the reactor, multiple baffles are sequentially arranged along the direction of material flow, dividing the cavity of the high-pressure reactor into multiple compartments with the upper parts of adjacent compartments connected. Multiple stirring devices correspond to these compartments, each comprising a rotating shaft, two stirring paddles, and a first driving component. The rotating shaft is installed vertically in the reactor with its lower end extending into the corresponding compartment, and the two stirring paddles are arranged at intervals from top to bottom along the rotating shaft, with the lower paddle reciprocating vertically. The first driving component is connected to the upper end of the rotating shaft to drive the rotation of the shaft. The arrangement of two stirring paddles improves the stirring effect, allowing for thorough mixing of the ore pulp, sulfuric acid, and steam in the reactor, thereby enhancing the reaction efficiency.
B01F 27/806 - Mélangeurs à agitateurs tournant dans des récipients fixesPétrins avec des agitateurs tournant autour d'un axe sensiblement vertical les agitateurs ou les récipients étant déplacés afin de les mettre en position de fonctionnementMoyens de fixation du récipient avec déplacement vertical de l'agitateur, p. ex. en combinaison avec des moyens permettant de faire pivoter l'agitateur autour d'un axe vertical afin de coopérer avec différents récipients
The invention belongs to the field of metallurgy technology and discloses a method for gradient continuous leaching of laterite nickel ore, which comprises the following steps: along the material conveying direction, the high pressure acid leaching process is sequentially divided into a mixed leaching zone, a stable leaching zone and an adjustment leaching zone. The high leaching efficiency of nickel, cobalt and manganese in the laterite nickel ore is achieved by controlling the temperature, pressure, reaction time and acid addition flow rate of each zone. The present invention innovatively performs zoning processing on the high pressure acid leaching process, wherein the mixed leaching zone achieves full mixing of materials, reduces sudden changes, and slows down scaling; The stable leaching zone achieves stable and efficient leaching of laterite nickel ore; the adjustment leaching zone performs buffering leaching to reduce the load of the discharge on the downstream device, improve the one-time leaching efficiency, slow down scaling, and reduce the probability of Al hydrolysis, thereby achieving the reduction of scaling of the autoclave while inhibiting further leaching of Fe and Al, and making full use of acid and residue to achieve efficient leaching of nickel, cobalt and manganese. Furthermore, the waste heat generated after the slurry is discharged from the adjustment leaching zone can be recycled.
The present invention discloses a precipitation method for MHP based on a composite alkali precipitant, which includes the following steps: A composite alkali solution is added to the liquid from laterite nickel ore after iron and aluminum removal to initiate a precipitation reaction, resulting in a nickel-cobalt hydroxide slurry; the composite alkali in the solution is a mixture of sodium carbonate and sodium hydroxide. The nickel-cobalt hydroxide slurry is subsequently processed and separated to obtain MHP. The invention employs a composite system of sodium hydroxide and sodium carbonate as the precipitant to prepare MHP, addressing the issues associated with the direct use of the strongly alkaline sodium hydroxide, which can lead to local over-alkalinity. This method reduces the manganese content in the resulting MHP, increases the nickel and cobalt content, facilitates the reduction of subsequent costs for refining MHP into crystals, and makes the reaction rate more controllable, resulting in better filter property and lower water content of the MHP.
The present invention discloses a method for preparing MHP (Mixed Hydroxide Precipitate) by recycling the liquid after manganese precipitation. The method includes the following steps: Mixing sodium hydroxide (NaOH), magnesium oxide (MgO) and the post-manganese precipitation liquid to obtain a compound alkaline slurry; Mixing the post-iron-aluminum removal liquid of laterite nickel ore and the compound alkaline slurry for precipitation reaction to obtain MHP slurry; Thickening the MHP slurry to obtain thickened underflow; Filtering the thickened underflow to obtain MHP filter cake and filtrate; Directly subjecting the filtrate to manganese precipitation treatment to obtain manganese residue and post-manganese precipitation liquid; Recycling the post-manganese precipitation liquid back to the preparation of the compound alkaline slurry. The invention utilizes a sodium hydroxide and magnesium oxide compound system to simplify the MHP precipitation process to one step. Meanwhile, the post-manganese precipitation liquid is partially recycled back to the alkali preparation process, which not only reduces the cost of wastewater treatment, but also reduces the magnesium content in MHP by controlling the circulation amount of the post-manganese precipitation liquid, thereby reducing the cost of subsequent purification and crystallization preparation of MHP.
C22B 3/06 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques acides
The present invention discloses a single-channel thickening system and a thickener, where the single-channel thickening system comprises a cylindrical body, a trapezoidal distributing plate, and a spiral dam. The top of the cylindrical body is provided with a feed inlet along the tangential direction; the trapezoidal distributing plate is set inside the cylindrical body, located at the bottom of the cylindrical body, and forms a gap with the bottom of the cylindrical body; the spiral dam is spirally arranged along the axis of the cylindrical body, the top end of the spiral dam is connected with the feed inlet, guiding the mineral slurry vortex at a uniform speed, and overflowing downward from the spiral dam towards the axis of the cylindrical body. The present invention, by connecting the feed inlet set tangentially on the cylindrical body with the spiral dam, guides the mineral slurry vortex at a uniform speed, and causes it to overflow downward from the spiral dam towards the axis of the cylindrical body, in conjunction with the trapezoidal distributing plate below, evenly distributes the mineral slurry, achieving the purpose of uniformly entering the thickener pool at a uniform speed and flow rate, and improving the processing efficiency of the thickener.
The present invention discloses a method for magnesiummanganese separation in the hydrometallurgical process of lateritic nickel ore, which belongs to the field of hydrometallurgical technology. The method involves subjecting the acid leachate of lateritic nickel ore to sequential ironaluminum slag sedimentation treatment and nickel-cobaltmanganese sedimentation treatment, resulting in a postsedimentation liquid of nickel-cobalt-manganese. Subsequently, an excess of carbon dioxide is introduced into the post- sedimentation liquid, and under the action of gas flotation, carbon dioxide reacts fully with magnesium and manganese ions in the liquid, forming an emulsion. This emulsion, under the influence of gravity, achieves upper and lower layer separation, resulting in upper and lower emulsions. Further, the upper and lower emulsions are subjected to pressure filtration to obtain magnesium carbonate and manganese carbonate, respectively. The separation process realizes an efficient separation of magnesium and manganese ions in the post-sedimentation liquid of nickelcobalt-manganese, and the entire separation process is simple, environmentally friendly, and suitable for large-scale promotion and application. Additionally, the separated products after calcination can be recycled, improving the utilization rate of the separation products
The present invention discloses a method for the synergism precipitation of iron-aluminum slag and tailings. The synergism precipitation method comprises the following steps: taking a laterite nickel ore high-pressure leaching slurry and sequentially performing a cyclic leaching treatment and a pre-neutralization treatment to obtain a pre-neutralized slurry, and then performing a multi-stage CCD washing to obtain a CCD overflow liquid; sequentially performing a first-stage iron-aluminum removal and a second-stage iron-aluminum removal treatment on the CCD overflow liquid, and the first-stage iron-aluminum removal underflow is recycled to the multi-stage CCD washing process, and is precipitated together with the pre-neutralized slurry to obtain a CCD underflow, and the CCD underflow is discharged after being subjected to tailings neutralization and filter pressing treatment in sequence. The present invention directly reuses the first-stage iron-aluminum removal underflow to the multi-stage CCD washing process, and dilutes it with water, so that the iron-aluminum slag in the original first-stage iron-aluminum removal underflow and the tailings in the pre-neutralized slurry are synergistically precipitated, which not only omits the filter pressing-washing cycle treatment of the first-stage iron-aluminum removal underflow in the prior art, but also effectively washes the two slag materials, reducing the content of nickel, cobalt and manganese in the final tailings.
The invention provides a soil remediation method based on landfill of tailings from laterite nickel ore smelting, including first, carrying out reinforcement treatment in the area of soil to be landed, to lay a base layer at the bottom of the area of soil to be filled; Secondly, the landfill layer is set on the base layer, which includes hydrometallurgical nickel ore tailings, pyrometallurgical nickel ore tailings, and humus; Next, a drainage layer is set on the landfill layer, which is connected with the drainage ditch around the soil area to be buried; Then, a green soil layer is laid on the drainage layer, the green soil is conducive to vegetation growth; Finally, green plants are planted on the green soil layer to complete the soil remediation. The invention firstly improves the soil remediation efficiency by doping the humus and reduces the heavy metal activity in the hydrometallurgy and pyrometallurgy tailings, after that, green plants are planted on the green soil layer to reduce the harm of soil pollution caused by the direct landfill of laterite nickel ore smelting slag.
The present invention discloses a method for recycling and utilizing laterite nickel ore metallurgical slag resources, and belongs to the field of hydrometallurgical technology. The method comprises the following steps: alkaline leaching treatment of laterite nickel ore hydrometallurgical slag to obtain alkaline leaching solution and alkaline leaching residue; acid leaching treatment of alkaline leaching residue to obtain acid leaching solution and acid leaching residue; mixing the acid leaching residue, biomass reducing agent and additives and then subjecting the obtained product to a ball milling treatment, and subjecting the obtained product to a reduction roasting treatment to obtain a roasting product; mixing the roasting product with a dispersant and subjecting the obtained product to a secondary ball milling treatment, and subjecting the obtained product to a magnetic separation to obtain an iron concentrate. In the present invention, the biomass is carbonized and activated to obtain a biomass reducing agent with enhanced reducibility. The biomass reducing agent has low cost and is green and environmentally friendly. After the biomass reducing agent is mixed with the acid leaching residue in a specific ratio, it is reduced and roasted in a specific atmosphere and then magnetically separated to obtain an iron concentrate with high purity and yield
C10L 5/40 - Combustibles solides à base essentielle de matières d'origine non minérale
C22B 3/04 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation
C22B 3/06 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques acides
C22B 3/12 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques alcalines
C22B 5/10 - Procédés généraux de réduction appliqués aux métaux par voie sèche par des agents réducteurs carbonés solides
C22B 7/00 - Mise en œuvre de matériaux autres que des minerais, p. ex. des rognures, pour produire des métaux non ferreux ou leurs composés
The present application relates to a high-pressure leaching reactor equipped with dual-power agitation, It includes the reactor body, stirring assembly, liquid supply assembly and driving component, The stirring assembly consists of a hollow shaft, a jet nozzle, and a stirring piece, The hollow shaft is connected to the reactor body, The apical external solution of the hollow shaft, The bottom of the hollow shaft is connected to the jet nozzle, The jet nozzle points to the inner bottom wall setting of the reactor body, The stirring piece is mounted on the hollow shaft, The liquid supply assembly is mounted on the reactor body and connected to the hollow shaft, The drive assembly is mounted on the reactor body and connected to the hollow shaft; The supply assembly delivers the solution to the hollow shaft and exports via the jet nozzle, Impact that the bottom of the reactor body blows up the deposited slurry, Mixing solution, Thus forming a hydrodynamic mechanical bidynamic mixing structure, Avoid slurry deposition, Increase in the reaction rate.
B01F 27/90 - Mélangeurs à agitateurs tournant dans des récipients fixesPétrins avec des agitateurs tournant autour d'un axe sensiblement vertical avec des palettes ou des bras
B01F 27/2123 - Arbres comportant à la fois des moyens de brassage et des moyens d'alimentation ou d'évacuation
The present invention discloses a flash preheating device, including multiple flash tanks and a preheating tank, wherein the multiple flash tanks are connected in sequence to form a multi-stage flash, and steam with gradually decreasing temperature is produced respectively; the preheating tank includes an inner cylinder and an outer sleeve, a pipeline for slurry circulation is formed in the inner cylinder, the outer sleeve is coaxially sleeved on the outside of the inner cylinder, an interlayer area is formed between the outer sleeve and the inner cylinder, the interlayer area is axially divided into steam areas corresponding to and connected to the flash tanks, adjacent steam areas are connected, and steam with gradually increasing temperature is introduced into the steam areas along the flow direction of the slurry. When the slurry is introduced into the inner cylinder, the higher temperature steam is introduced into the interlayer area to exchange heat with the slurry, and then enters the adjacent interlayer area to mix with the lower temperature steam and continue to exchange heat with the slurry, and so on, so that the higher temperature steam can achieve multiple heat exchanges and fully utilize its heat.
F28D 7/10 - Appareils échangeurs de chaleur comportant des ensembles de canalisations tubulaires fixes pour les deux sources de potentiel calorifique, ces sources étant en contact chacune avec un côté de la paroi d'une canalisation les canalisations étant disposées l'une dans l'autre, p. ex. concentriquement
The present invention discloses a CCD countercurrent washing flocculant uniform feeding system, including a settling tank, a forced dilution pump, a secondary flocculant tube with a feed channel extending into the pump outlet on the feed channel for injecting the diluent into the feed channel and mixing with the material; the flocculant tube is embedded between the forced dilution pump outlet and the feed channel; the number of secondary flocculant tubes is multiple. The CCD countercurrent washing flocculant uniform feeding system provided by the invention, shocks the flocculant tubes by inserting secondary flocculant tubes in each direction between the forced dilution pump outlet, and the injection level with kinetic energy impact.
The present invention discloses a combined beneficiation method for laterite nickel ore, comprising the following steps: subjecting the raw ore to a washing process and a first-stage cyclone separation in sequence, subjecting the first-stage cyclone underflow to spiral chute classification, multi-stage shaking table classification, weak magnetic separation and spiral classification in sequence, so as to obtain a first chrome concentrate, a first chrome middling, a second weak magnetic separation middling and a mixed light ore. subjecting the mixed light ore to ball milling and stirring treatment, and then subjecting it to a second-stage cyclone separation. subjecting the second-stage cyclone underflow to weak magnetic separation, subjecting the weak magnetic separation magnetic material to shaking table classification and spiral classification to obtain a second chrome concentrate, subjecting the weak magnetic separation non-magnetic material to strong magnetic separation to obtain a strong magnetic separation non-magnetic material and a strong magnetic separation magnetic material. mixing the strong magnetic separation magnetic material with the second weak magnetic separation middling, ball milling and then recycling them to the ball milling and stirring process, and mixing the first-stage cyclone overflow, the second-stage cyclone overflow and the strong magnetic separation non-magnetic material and using them to prepare a high-pressure leaching stock solution. through the combined process of the present invention, the recovery rate of chromium is high, which is beneficial to reducing the chromium removal pressure in the laterite nickel ore wet smelting process.
The present application discloses a method for recovering manganese from a post-MHP-precipitation solution. The method comprises the following steps: (1) subjecting manganese in a post-MHP-precipitation solution to resin adsorption, followed by elution to obtain a manganese-rich solution; (2) extracting the manganese-rich solution to obtain a manganese-rich organic phase and a raffinate, wherein the extractant used in the extraction treatment is one or more of HBL110 and HBL116; and (3) stripping the manganese-rich organic phase to obtain a battery-grade stripped manganese solution, which can be directly compounded and used for synthesizing a ternary NCM battery material. In the present application, manganese is recovered from the filtrate in the stage of preparing MHP from laterite nickel ore via resin adsorption combined with a continuous extraction process. The resulting manganese solution can meet the standards for battery-grade manganese solutions, which not only reduces resource waste and environmental pollution caused by manganese slag landfill, but also alleviates the shortage of manganese ore resources in China.
C22B 3/26 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction liquide-liquide utilisant des composés organiques
C22B 3/42 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction utilisant l'échange d'ions
The present application discloses a flash tank stabilization system, comprising a support mechanism and a vibration damping assembly. The support mechanism comprises a base, upright columns, and a top plate; the vibration damping assembly comprises hydraulic cylinders, pressure plates, strain gauges, and oil pumps; a cylinder body of each hydraulic cylinder is fixed to the top plate; an output shaft of each hydraulic cylinder is fixedly connected to one end of a pressure plate, the other end of the pressure plate is connected to one end of a strain gauge, and the other end of the strain gauge is connected to the upper end of a flash tank; each oil pump is used for supplying oil to a hydraulic cylinder, and the output pressure of the oil pump can be adjusted on the basis of a pressure detected by the strain gauge, so that the pressure applied to the pressure plate by the flash tank is equal to the pressure applied to the pressure plate by the hydraulic cylinder. The present application can effectively reduce vibration of flash tanks during operation, thereby preventing pipe fixing structures of flash tanks from loosening, improving safety.
F16F 15/027 - Suppression des vibrations dans les systèmes non rotatifs, p. ex. dans des systèmes alternatifsSuppression des vibrations dans les systèmes rotatifs par l'utilisation d'organes ne se déplaçant pas avec le système rotatif utilisant des moyens fluides comprenant des dispositifs de commande
Disclosed in the present application is a laterite nickel ore dump leaching system, comprising at least one dump leaching tank, a liquid storage tank and an acid-spraying unit. The dump leaching tank comprises a tank body and two partition plates, wherein the bottom surface of the tank body is an inclined surface, and the side wall of the tank body at the lower end is open; the two partition plates are arranged at an interval in the tank body from high to low along the inclined surface, so as to divide the interior of the tank body into a dump leaching cavity, a filter cavity and a liquid discharge cavity distributed from high to low along the inclined surface; and each of the partition plates is provided with a plurality of passage openings. The liquid storage tank is arranged directly below the tank body. In the present application, a filter medium is separated from leaching residues by means of the partition plates, such that when the leaching residues are discharged by means of an excavating bucket, the filter medium cannot be discharged together therewith by means of the excavating bucket. Moreover, the bottom surface of the tank body is an inclined surface, such that when less extract is generated in the later stage of leaching, it can be ensured that the outflow rate of the extract remains unchanged.
Disclosed in the present application are a multi-stage neutralization device for laterite nickel ore, and a circulation leaching and neutralization system. The multi-stage neutralization device for laterite nickel ore comprises a plurality of neutralization tanks, a plurality of first stirring devices, an ore slurry pipeline, a limestone slurry pipeline and an automatic regulation device, wherein the plurality of neutralization tanks are arranged at intervals in a first direction, and each has a first side and a second side arranged opposite each other in a second direction; the ore slurry pipeline is arranged on the first sides and can be sequentially connected in series to any part or all of the plurality of neutralization tanks; the limestone slurry pipeline is arranged on the second sides and is connected to the plurality of neutralization tanks; and the automatic regulation device can regulate, on the basis of the liquid level in the neutralization tanks, the flow rate of limestone slurry added into the neutralization tanks. In the present application, by using materials resulting from a neutralization reaction in the neutralization tanks to perform buffering, and in cooperation with the automatic regulation device controlling the amount of limestone slurry added, vigorous reactions are avoided while an optimal reaction rate in the neutralization tanks is ensured.
1234144 of the flocculant solution. In the present application, the water content of the flocculant solution is measured, and then the flocculant content of the flocculant solution is obtained on the basis of the water content and the content of total dissolved solids; and the method is not affected by changes in the molecular weight of a polymer and the degree of hydrolysis, can accurately measure the mass concentration of the flocculant in the flocculant solution, has the characteristic of high accuracy, and meets the requirements of field measurement.
G01N 5/00 - Analyse des matériaux par pesage, p. ex. pesage des fines particules séparées d'un gaz ou d'un liquide
G01N 5/04 - Analyse des matériaux par pesage, p. ex. pesage des fines particules séparées d'un gaz ou d'un liquide en éliminant un constituant, p. ex. par évaporation, et en pesant le reste
81.
WEAR-RESISTANT STRUCTURE FOR LATERITE NICKEL ORE AUTOCLAVE
The present application discloses a wear-resistant structure for a laterite nickel ore autoclave, comprising an autoclave body, an insulating sleeve, and a wear-resistant plate. An accommodating cavity is formed in the autoclave body, and a first mounting slot is formed on the inner wall of the accommodating cavity. The insulating sleeve is embedded in the first mounting slot, and a second mounting slot is formed on the insulating sleeve. The wear-resistant plate is embedded in the second mounting slot, wherein the insulating sleeve blocks the flow of electrical charges between the wear-resistant plate and the autoclave body. The insulating sleeve is embedded in the first mounting slot, and the wear-resistant plate is embedded in the second mounting slot, so that the wear-resistant plate can be fixed inside the autoclave body, thereby improving the wear resistance of a stirring area by means of the wear-resistant plate. In addition, since the insulating sleeve blocks the flow of the electrical charges between the wear-resistant plate and the autoclave body, the galvanic effect between the wear-resistant plate and the autoclave body can be prevented, avoiding accelerated corrosion of the autoclave body caused by the galvanic effect from different types of metals, thereby prolonging the service life of the autoclave.
The present application discloses an ion exchange system for a laterite nickel ore leaching solution, comprising a plurality of ion exchange resin columns connected end to end in sequence. Each ion exchange resin column comprises a head portion, a middle portion, and a tail portion which are connected in sequence. A head portion perforated plate and a head portion pipe in communication with a cavity inside the head portion are rotatably provided on the end of the head portion away from the middle portion, and a tail portion perforated plate and a tail portion pipe in communication with a cavity inside the tail portion are provided on the end of the tail portion away from the middle portion, wherein the head portion perforated plate is attached to the tail portion perforated plate of the previous ion exchange resin column and can rotate relative to the tail portion perforated plate, so that the head portion perforated plate and the tail portion perforated plate are at least in a complete connection state in which hole positions are completely aligned and a disconnection state in which the hole positions are completely misaligned. The ion exchange system provided by the present application allows for switching of the series-connection state or parallel-connection state of the ion exchange resin columns when performing various procedures such as elution, desorption, and backflushing, thereby improving the treatment efficiency.
C22B 3/42 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction utilisant l'échange d'ions
B01J 47/024 - Procédés sur colonne ou sur lit caractérisés par la fabrication de la colonne ou du contenant dans lesquels les échangeurs d’ions sont placés dans une cartouche amovible
B01J 49/60 - Nettoyage ou rinçage des lits d’échange d’ions
Disclosed in the present application is a laterite nickel ore blending apparatus, comprising a plurality of belt conveyor lines, a feeding and mixing module, flow control devices, a data input module and a central control system, wherein the plurality of belt conveyor lines are used for conveying different batches of laterite nickel ore; the feeding and mixing module is arranged at the tail end of the belt conveyor lines and is used for mixing the different batches of laterite nickel ore; and the flow control devices are arranged on each of the belt conveyor lines and are used for adjusting the belt speed to control the flow rates of the different batches of laterite nickel ore. In the present application, different batches of laterite nickel ore are respectively conveyed by means of the plurality of belt conveyor lines, and information of the batches of laterite nickel ore is input into the central control system by means of the data input module, such that on the basis of data information, the central control system controls the flow control devices to regulate the conveying flow rates of laterite nickel ore on the belt conveyor lines, thereby achieving the aim of dynamically blending the batches of laterite nickel ore, and forming a dynamic balance in ore composition.
The present application discloses an impurity removal device for a laterite nickel ore leachate, comprising a tank body, a filter member, and a cleaning assembly. The middle part of the tank body is provided with a filter area, and the side wall of the tank body is further provided with a liquid inlet in communication with the filter area; the filter member is provided with a plurality of compartments arranged at intervals in the circumferential direction of the filter member, the upper and lower sides of the compartments are provided with filter holes, each of the compartments is filled with a filter material, and the filter member is rotatably mounted in the filter area, such that when the filter member rotates, the liquid inlet can be in communication with one of the compartments; and the cleaning assembly is connected to the liquid inlet. The present application enables thorough cleaning of the filter materials in the compartments, thereby achieving a good cleaning effect.
B01D 24/08 - Filtres à substance filtrante non agglomérée, c.-à-d. à substance filtrante sans aucun liant entre les particules ou les fibres individuelles qui la composent avec le lit filtrant stationnaire pendant la filtration la substance filtrante étant calée entre des parois perméables fixes la substance filtrante étant supportée par au moins deux parois perméables coaxiales
B01D 24/46 - Régénération de la substance filtrante dans le filtre
B01D 24/48 - Filtres à substance filtrante non agglomérée, c.-à-d. à substance filtrante sans aucun liant entre les particules ou les fibres individuelles qui la composent combinés dans une même structure à des dispositifs de commande de la filtration
The present application discloses a laterite nickel ore leachate extraction tower, comprising an extraction tower body, a heavy-phase feed mechanism, a light-phase feed mechanism, a baffle mechanism, and an air distribution apparatus. The extraction tower body comprises a tower, the interior of which is provided with a receiving cavity, and a top portion of the tower is provided with an upper clarifying tank. The baffle mechanism comprises at least one movable baffle arranged inside the tower and a lifting drive member, and the movable baffle is densely provided with through holes. In the present application, mixing of a heavy phase and a light phase is promoted by means of a flotation method, while the lifting drive member drives the movable baffle to move up and down so that the movable baffle is always located within the light phase in the tower and within a preset height range above an interface between the light phase and the heavy phase. When the heavy phase passes upward through the through holes on the movable baffle, the heavy phase is dispersed into small liquid droplets, allowing full contact with the light phase above, thereby improving the mixing effect and increasing extraction efficiency.
C22B 3/26 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction liquide-liquide utilisant des composés organiques
Disclosed in the present application is an electrochemical reaction device for a laterite nickel ore leaching solution. The electrochemical reaction device comprises: an electrolytic cell (1), an electrode plate assembly (2), and a cleaning assembly (3), wherein the electrode plate assembly (2) comprises a positive electrode plate (21) and a negative electrode plate (22) that are respectively arranged at the top end and the bottom end of an inner wall of the electrolytic cell (1), an arc-shaped reaction surface (221) being formed on the top surface of the negative electrode plate (22); and the cleaning assembly (3) comprises a screw rod (31) and a driving member (32), the screw rod (31) being arranged on the upper side of the negative electrode plate (22), with the lower part of the outer side surface of the screw rod matching the arc-shaped reaction surface, and the driving member (32) being connected to the screw rod (31) for driving the screw rod (32) to rotate, such that the outer side surface of the screw rod scrapes across the arc-shaped reaction surface (221). In the present application, it is ensured that precipitates and liquid react on the negative electrode plate by means of the cooperation of electrochemical solid-liquid separation and gravity action; moreover, the outer side surface of the screw rod can scrape across the arc-shaped reaction surface, thereby cleaning up precipitated reactants on the negative electrode plate, preventing the precipitated reactants from affecting the discharge of the negative electrode plate, and thus facilitating the improvement of the electrochemical reaction efficiency of laterite nickel ore.
Disclosed in the present application is a CCD counter-current washing flocculant addition and dispensing device, comprising a barrel, a discharge pipe, a valve, a stirring mechanism and a monitoring mechanism, wherein the barrel is provided with a feed port and a discharge port; a first inlet of the discharge pipe is connected to the discharge port; the valve is disposed on the discharge pipe; the stirring mechanism comprises a first electric motor and a stirring rod, the first electric motor being disposed at the top of the barrel, and an output shaft of the first electric motor being connected to the stirring rod; and the monitoring mechanism comprises a circulation pipe, a first pump and a flow meter, an inlet of the first pump being in communication with the barrel, an outlet of the first pump being in communication with an inlet of the circulation pipe, an outlet of the circulation pipe being in communication with the barrel, and the flow meter being disposed on the circulation pipe. In the present application, a flocculant solution is stirred by the stirring rod, such that the flocculant is kept in a suspended state; by providing the circulation pipe, the flocculant solution can circulate, thereby reducing the possibility of flocculant precipitation and agglomeration; moreover, the flow meter can continuously monitor the flow rate, and coagulation and precipitation of the flocculant can be discovered in a timely manner.
B01D 21/24 - Mécanismes d'alimentation ou d'évacuation pour bacs de décantation
B01F 21/10 - Dissolution en utilisant des agitateurs entraînés
B01F 27/906 - Mélangeurs à agitateurs tournant dans des récipients fixesPétrins avec des agitateurs tournant autour d'un axe sensiblement vertical avec des palettes ou des bras avec un axe fixe
A thickener comprising a liftable/lowerable launder, comprising a sedimentation tank (1), a stirring mechanism (2), and adjustment mechanisms (3). The sedimentation tank (1) is provided with a sedimentation cavity, a sludge discharge port (11) is formed at the center of the inner bottom surface of the sedimentation tank (1), an overflow launder (12) in communication with the sedimentation cavity is further formed at the edge of the sedimentation tank (1), and a water discharge port (121) in communication with the overflow launder (12) is formed on a side wall of the overflow launder (12); the stirring mechanism (2) is used for stirring a mixture in the sedimentation tank (1); and each adjustment mechanism (3) comprises a lifting/lowering inner cylinder (31), a turbidity detector (32), and a lifting/lowering driving member (33). The lifting/lowering driving member (33) drives the lifting/lowering inner cylinder (31) to move up and down, to keep the turbidity of water at the height of the lifting/lowering inner cylinder (31) stable, so that the turbidity of a supernatant discharged over the lifting/lowering inner cylinder (31) is stabilized, thereby enabling, when the turbidity of the supernatant at the upper part of the sedimentation tank (1) is low, the lifting/lowering inner cylinder (31) to be lowered, and thus quickly discharging the supernatant, improving the supernatant discharging efficiency, and further improving the thickening efficiency.
The present application relates to a flocculant adding device for a thickener. The flocculant adding device comprises an ore slurry feed pipe and a flocculant feed pipeline, wherein the ore slurry feed pipe is partially built in the thickener, and has one end for introducing ore slurry and the other end in communication with a feed well of the thickener; and the flocculant feed pipe comprises a vertical pipe, a dilution pump and a branch pipe, wherein the bottom end of the vertical pipe is in communication with the ore slurry feed pipe via the dilution pump, the top of the vertical pipe is located below the liquid level of the thickener, such that a supernatant in the thickener overflows into the vertical pipe; and the branch pipe has one end for introducing a flocculant and the other end in communication with the vertical pipe. In the present application, by providing the vertical pipe, the supernatant in the thickener is introduced into the vertical pipe, the flocculant is introduced into the vertical pipe through the branch pipe, the flocculant is mixed with the supernatant in the vertical pipe for diluting, diluted mixed liquid is conveyed to the ore slurry feed pipe under the action of the dilution pump to be mixed with the ore slurry, and the mixing efficiency is high, thereby improving the thickening effect.
The present application discloses a sealing structure and a centrifugal feeding pump. The sealing structure comprises a flange base, a stationary ring assembly, and a rotating ring assembly, the flange base is provided with a mounting passage, and the stationary ring assembly is mounted in the mounting passage; the rotating ring assembly is mounted on the outer periphery of a rotating shaft and located in the mounting passage; the rotating ring assembly abuts against the stationary ring assembly in the axial direction; a gap is formed between the end of the rotating ring assembly facing a pump cavity and the side wall of the mounting passage; a helical protrusion located within the gap is provided on the outer periphery of the rotating ring assembly; and a conveying direction of the helical protrusion is oriented towards the pump cavity, so that when the rotating shaft rotates, the helical protrusion pushes a medium away from a position where the rotating ring assembly abuts against the stationary ring assembly. In the present application, when the helical protrusion rotates, a force directed toward the pump cavity can be generated to prevent medium particles from entering the gap, thereby effectively protecting the operating environment of a friction pair and extending the service life.
F16J 15/34 - Joints d'étanchéité entre deux surfaces mobiles l'une par rapport à l'autre par bague glissante pressée contre la face plus ou moins radiale d'une des deux parties
F04D 29/12 - Joints d'étanchéité pour arbre utilisant des bagues
Disclosed in the present application are a centrifugal ore slurry preheater feed pump and a feed pump system. The centrifugal ore slurry preheater feed pump comprises a drive unit, a centrifugal unit and a sealing and cooling unit. The centrifugal unit comprises an impeller and an impeller shroud structure, wherein the impeller is rotatably arranged inside the impeller shroud structure; a plurality of medium channels are formed in the impeller shroud structure by means of a plurality of blades of the impeller; one side of the impeller is connected to the drive unit, and the other side thereof is provided with an opening that is in communication with a feed inlet of the impeller shroud structure and one end of each medium channel, respectively; the feed inlet of the impeller shroud structure is sequentially provided with first protrusions in the circumferential direction; and a pump cavity in communication with the other end of each medium channel is further formed inside the impeller shroud structure. The present application achieves stable, continuous and leak-free safe transportation of a high-temperature and high-pressure solid, liquid and gas three-phase flow ore slurry medium by means of the combined action of multiple systems.
F04D 7/04 - Pompes adaptées à la manipulation de liquides particuliers, p. ex. par choix de matériaux spéciaux pour les pompes ou pièces de pompe du type centrifuge les fluides étant visqueux ou non homogènes
Disclosed in the present application is a shafting transmission structure, comprising: a rotating shaft, a shaft support structure and a bearing set, wherein the shaft support structure is sleeved on the outer side of the rotating shaft, and the bearing set comprises a first bearing, a second bearing and a self-aligning bearing which are arranged between the rotating shaft and the shaft support structure. An inner side surface and an outer side surface of the self-aligning bearing are respectively connected to the rotating shaft and the shaft support structure. A first side surface of the first bearing abuts against and is connected to the shaft support structure to bear an axial force in a first direction, and a second side surface of the second bearing abuts against and is connected to the shaft support structure to bear an axial force in a second direction, wherein the first direction is opposite to the second direction. The structure can bear bi-directional axial loads in tandem pump applications, and can also achieve an axial adjustment function of a rotor component, thereby ensuring the stability and load-bearing capacity of the shaft.
An adjustable support structure and a centrifugal feeding pump. The adjustable support structure comprises: a movable portion, a fixed portion and an adjusting screw (6), wherein the movable portion is configured to be connected to a base (7) of a pump, and the movable portion has a movable groove extending in a direction parallel to the axis of the pump; the fixed portion comprises a fixed end and a connecting end that is connected to the movable groove in a penetrating manner; and the adjusting screw (6) is in threaded connection with the movable portion, and one end of the adjusting screw (6) is rotatably connected to the connecting end of the fixed portion, so as to drive the relative position between the movable portion and the fixed portion by means of the rotation of the adjusting screw (6) on the movable portion. The adjustable support structure allows for overall adjustment of the axial position of the pump after mounting, thereby facilitating mounting and operation of the pump.
The present application discloses a diaphragm pump overload protection device, comprising a housing, an overload protection mechanism, and a cushioning mechanism, wherein a sealed accommodating cavity is formed in the housing, and the housing is provided with a hydraulic inlet, hydraulic outlets, and a pressure relief port; the overload protection mechanism comprises a safety valve, a back pressure pipe, and back pressure valves; and the cushioning mechanism comprises an energy storage tank and a diaphragm. The diaphragm pump overload protection device provided by the present application has the following beneficial effects: the hydraulic inlet is communicated with a liquid discharge port of a power end, and the hydraulic outlets are communicated with a liquid inlet of a diaphragm chamber of a diaphragm pump; when the pressure of liquid discharged from the power end exceeds the safety pressure of the safety valve, the liquid enters the back pressure pipe through the safety valve and then enters an energy storage cavity of the energy storage tank, so as to push the diaphragm to press a cushioning cavity, thereby performing energy storage and cushioning, which can reduce the amplitude of pressure change of the liquid entering the diaphragm chamber, thereby reducing the impact force on a normal temperature area of a hydraulic end of the diaphragm pump, reducing the vibration intensity, and prolonging the service life of components.
Disclosed in the present application are a tailings transport control method and apparatus, and an electronic device and a storage medium. The method comprises: separately acquiring weight values measured by a first weighbridge and a second weighbridge; on the basis of the weight values measured by the first weighbridge and the second weighbridge, calculating an actual load weight of a truck; acquiring a truck image captured in a truck washing region, and performing recognition on the truck image to determine whether the truck is a legitimate vehicle; when it is determined that the truck is a legitimate vehicle, sending a truck washing signal to the truck washing region, and updating a cumulative washing count of the truck for the day; and associating all the actual load weights of the truck for the day with the current cumulative washing count of the truck, in order to generate a tailings transport data chart of the truck. The present application solves the technical problems in the prior art of it not being possible to accurately acquire a daily tailings outward transport weight, and it not being convenient to acquire the transport status of each laterite nickel ore tailings transport truck.
A method for preparing a nickel-cobalt-manganese raw material with ion co-balance in hydrometallurgy of laterite-nickel ore. The method comprises the following steps: acquiring parameters of an initial feed liquid, the actual pH of the feed liquid at the reaction endpoint and a target precipitation rate of a target metal; constructing a first theoretical relationship model between the theoretical pH of the feed liquid at the reaction endpoint and the target precipitation rate of the target metal, and obtaining the theoretical pH of the feed liquid at the reaction endpoint on the basis of the parameters of the initial feed liquid and the first theoretical relationship model; and determining whether the reaction is stopped or not on the basis of the theoretical pH of the feed liquid at the reaction endpoint and the actual pH of the feed liquid at the reaction endpoint. From the perspective of ion balance, the method provides guidance for the MHP precipitation process. By means of the method, the theoretical pH of the feed liquid at the reaction endpoint can be directly obtained on the basis of the parameters of the initial feed liquid and the target precipitation rate of the target metal, so as to determine whether the reaction is stopped or not by means of the theoretical pH of the feed liquid at the reaction endpoint and the actual pH of the feed liquid at the reaction endpoint.
The present application discloses an optimization method for the O/A ratio during the ion extraction of nickel and cobalt (manganese) from laterite nickel ore and a use of the optimization method. The optimization method comprises the following steps: acquiring liquid parameters of a liquid to be extracted, parameters of an extractant, and a target extraction rate of manganese; constructing a theoretical O/A ratio model, and determining a theoretical O/A ratio on the basis of the liquid parameters, the parameters of the extractant, the target extraction rate of manganese, and the theoretical O/A ratio model; and constructing limiting conditions, and determining an optimal O/A ratio on the basis of the theoretical O/A ratio and the limiting conditions. On the basis of the combination of theory and production practice, the present application establishes a corresponding theoretical model for the selection of the O/A ratio in an extraction section in a nickel-cobalt (manganese) co-extraction process based on different extractants and the problem of how to avoid the generation of a third phase during extraction, determines an optimal O/A ratio on the basis of the theoretical model, and finally uses a nickel-cobalt (manganese) mixed solution resulting from co-extraction under the condition of the optimal O/A ratio to prepare a nickel-cobalt (manganese) precursor and a ternary positive electrode material.
C22B 3/26 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction liquide-liquide utilisant des composés organiques
98.
METHOD AND PROCESS FOR ENHANCED LEACHING OF LATERITIC NICKEL ORE
Provided in the present application are a method and process for enhanced leaching of lateritic nickel ore. The method comprises: acquiring reaction conditions for a lateritic nickel ore leaching reaction; on the basis of the reaction conditions, determining a reaction model for the lateritic nickel ore leaching reaction, wherein reaction models include a liquid-layer diffusion-controlled model, a product-layer diffusion-controlled model and a reaction-controlled model; on the basis of the reaction model, determining the reaction conversion of the lateritic nickel ore leaching reaction; and on the basis of a reaction temperature, an acid-to-ore ratio and a reaction time, determining applicable reaction models under different reaction conditions, such that accurate control over a lateritic nickel ore leaching process can be achieved. The present application provides a theoretical basis and guidance for enhanced leaching of lateritic nickel ore, and improves the reaction rate of a lateritic nickel ore leaching reaction.
The present application provides a lithium-rich manganese-based composite positive electrode material, and a preparation method therefor and a use thereof. The lithium-rich manganese-based composite positive electrode material comprises a lithium-rich manganese-based base material core and a high-entropy oxide material covering the surface of the core. Metal elements in the high-entropy material include Mg, Zn, Cu, and Nb. In the positive electrode material provided in the present application, by means of synergistic cooperation of Mg, Zn, Cu, and Nb in the high-entropy oxide material in a surface layer, the migration of transition metals in the positive electrode material is inhibited, the loss of oxygen is inhibited, and electronic conductivity is also improved, thereby greatly improving the cycle performance and rate performance of the lithium-rich manganese-based composite positive electrode material.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/505 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs d'oxydes ou d'hydroxydes inorganiques de manganèse d'oxydes ou d'hydroxydes mixtes contenant du manganèse pour insérer ou intercaler des métaux légers, p. ex. LiMn2O4 ou LiMn2OxFy
H01M 4/62 - Emploi de substances spécifiées inactives comme ingrédients pour les masses actives, p. ex. liants, charges
The invention discloses a method for cyclic chromium processing, which includes: the raw ore is subjected to a washing process and a first-stage cyclone separation in sequence to obtain the first-stage cyclone overflow and the first-stage cyclone underflow. The first-stage cyclone underflow is subjected to weak magnetic separation treatment to obtain the first chrome middlings. The first-stage cyclone underflow is subjected to weak magnetic separation and strong magnetic separation treatment in sequence to obtain the strong magnetically separated non-magnetic material and the strong magnetically separated magnetic material; The strong magnetically separated magnetic material are sequentially subjected to spiral chute classification, multi-stages shaking table classification, and then weak magnetic separation and spiral classification to obtain chrome concentrate, second chrome middlings, second weak magnetically separated middlings and mixed light ore; After the mixed light ore and the strong magnetically separated non-magnetic material are mixed and ball-milled, the second stage of cyclone separation is carried out. The obtained second-stage cyclone underflow and the second-stage weak magnetic separation ore are ball-milled and then returned to the strong magnetic separation process. The invention separates the chromite in the laterite nickel ore through the combined process of multi-stage magnetic separation, spiral chute, multi-stages shaking table classification and multi-stage cyclone separation, so as to improve the recovery rate and grade of the obtained chrome concentrate.
