Abstract

The present application relates to the technical field of heavy-metal pollution remediation, and relates in particular to a soil heavy‐metal accumulation predicting method employing an emission inventory and a receptor model. The method comprises: using atmospheric dust deposition, irrigation water, chemical fertilizers and pesticides as input flux sources of heavy metals to farmland soil, using surface runoff and crops as output fluxes, and constructing an input-output flux inventory of heavy-metal pollutants to clarify a dynamic balance relationship of soil heavy-metal accumulation; and continuously collecting and monitoring of soil samples. The invention provides crucial assistance in determining the transport balance of heavy metals in farmland areas impacted by non-ferrous metal smelting and beneficiation slag sites and in identifying sources of soil heavy-metal pollution, and offers theoretical guidance for subsequent soil heavy-metal remediation and targeted control.

IPC Classes  ?

• G16C 20/30 - Prediction of properties of chemical compounds, compositions or mixtures
• G16C 20/20 - Identification of molecular entities, parts thereof or of chemical compositions
• G01N 27/626 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosolsInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electric discharges, e.g. emission of cathode using heat to ionise a gas

Abstract

An optical storage system designed to compensate for the water hammer effect in hydropower turbines and its cooperative frequency modulation method are provided. The method involves detecting the water hammer effect and utilizing a pre-established system model integrating a hydropower unit, photovoltaic system, and hybrid energy storage system. Through model predictive control combined with a whale optimization algorithm, the governor parameters of the hydropower unit are optimized. The system then obtains the photovoltaic active power output and the battery's state of charge (SOC) within the hybrid energy storage system. Based on these parameters, a collaborative control strategy for the photovoltaic and hybrid energy storage systems is determined and executed. This strategy enables effective control of the photovoltaic system and/or hybrid energy storage to compensate for reverse power adjustments in the hydropower unit, addressing the water hammer effect and ensuring stable power grid operation.

IPC Classes  ?

• H02J 3/24 - Arrangements for preventing or reducing oscillations of power in networks
• G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers

Abstract

Provided is a method for judging spatial oblique distribution patterns and deep prospecting and targeting concealed ore bodies of a hydrothermal deposit controlled by structures. The method includes: a structural classification ore-controlling law and an combination pattern of ore-controlling structures are determined. A mechanical mechanism of the spatial distribution of ore deposits, ore segments, ore body groups and ore bodies controlled by multi-scale structures is revealed, and an oblique distribution law of ore bodies on a plane and a cross-section is determined. According to the oblique distribution law and the erosion depth of ore body groups and ore segments, pinching-out elevations of the maximum deep extensions of main ore body groups and ore segments are inferred. Deep prospecting and targeting of a concealed ore body is realized, and the deep resource potential is predicted.

IPC Classes  ?

• G01N 33/24 - Earth materials
• G01N 3/08 - Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces

Abstract

Provided is a target delineation method for deep prospecting of a hydrothermal deposit controlled by a fault-fold structure, including: analyzing an echelon distribution of orebodies or mineralized bodies, and analyzing a mechanical mechanism of the ore-forming structure; determining a trend and a plunge of an overall principal compressive stress of the mining area, as well as trends and plunges of local principal compressive stresses at different locations of an anticline; revealing a control effect of the local principal compressive stress on formation of an ore-bearing space and on a spatial distribution of orebody groups; and determining a stress transformation region controlled by the deposit structure as a favorable ore-forming zone of the deposit, and determining a stress transformation region controlled by an orebody structure in the favorable ore-forming zone as a target position for deep concealed orebodies.

IPC Classes  ?

• G01V 9/00 - Prospecting or detecting by methods not provided for in groups

Abstract

The provided are a line fault detection method, system, equipment, and a computer-readable storage medium. The line fault detection method comprises the following steps: Inject a pulse signal into the grounding electrode line and acquire fault voltage traveling wave data responding to the fault point in the grounding electrode line based on the measuring spot; Based on the fault voltage traveling wave data and a preset step size, determine the voltage forward traveling wave sequence and voltage reverse traveling wave sequence for the entire grounding electrode line; Based on the corresponding energy superposition expressions of the voltage forward traveling wave sequence and the voltage reverse traveling wave sequence, determine the integral value sequence of the traveling wave product within a preset time period; Based on the maximum mutation point in the integral value sequence, determine the fault distance.

IPC Classes  ?

• G01R 31/11 - Locating faults in cables, transmission lines, or networks using pulse-reflection methods
• G01R 31/08 - Locating faults in cables, transmission lines, or networks

Abstract

The invention relates to relay protection technology, specifically a method, system, and medium for fault arc suppression in distribution networks using closed-loop self-healing control. When a fault is detected in the distribution network, transient changes in the measured and virtual phase currents of each phase are obtained. The Pearson correlation coefficient between these changes is calculated to identify the target fault phase. The neutral point-to-ground voltage value is retrieved, and the target fault phase's voltage is adjusted to zero based on this value. The current from the fault phase, when its voltage is zeroed, is acquired. An injected current is then compensated at the neutral point to match this value, ensuring both the ground fault current and the fault phase voltage are reduced to zero. This method enhances the applicability of arc suppression for grounding faults in distribution networks.

IPC Classes  ?

• H02H 9/08 - Limitation or suppression of earth fault currents, e.g. Petersen coil
• G01R 25/00 - Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
• G01R 31/08 - Locating faults in cables, transmission lines, or networks
• G01R 31/52 - Testing for short-circuits, leakage current or ground faults
• H02H 9/04 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage

Abstract

The provided are a method, system, and medium for active arc-extinguishing voltage-current conversion in distribution networks. The method includes: detecting a single-phase-to-ground fault in the distribution network and identifying the target faulty phase; injecting compensating currents into the target faulty phase to reduce its voltage; measuring the residual current at the fault point during the injection of compensating currents and the zero-sequence voltage of the target faulty phase; determining a critical zero-sequence voltage threshold based on the residual current at the fault point and assessing whether this critical value exceeds the present zero-sequence voltage; if so, ceasing the injection of compensating currents into the target faulty phase and instead injecting active arc-extinguishing currents at the neutral point of the distribution network to mitigate ground currents at the grounding points of the distribution network. The objective is to enhance the applicability of arc-extinguishing methods for ground faults in distribution networks.

IPC Classes  ?

• H02H 7/22 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systemsEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for switching devices
• H02H 1/00 - Details of emergency protective circuit arrangements

Abstract

The present invention belongs to the technical field of biomedicine. Disclosed are a cannabicyclol derivative, a preparation method therefor and the use thereof. By using citral (3,7-dimethyl-2,6-octadienal) and a derivative thereof, and olivetol (1,3-dihydroxy-5-pentylbenzene) and a derivative thereof as starting materials, the cannabicyclol derivative is efficiently synthesized by means of a one-pot method under the combined action of ethylenediamine and a photocatalyst, thereby achieving simple and convenient operation, simplified steps and superior yield. In addition, the application potential of cannabicyclol and the derivative thereof in the research and development of tumor stem cell drugs is also explored, especially for glioblastoma stem cells, pancreatic cancer stem cells and liver cancer stem cells, showing the prospect of being an anti-tumor drug for specifically targeting tumor stem cells.

IPC Classes  ?

• A61K 31/352 - Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom condensed with carbocyclic rings, e.g. cannabinols, methantheline
• C07D 311/94 - Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems condensed with rings other than six-membered or with ring systems containing such rings
• A61P 35/00 - Antineoplastic agents

Abstract

This application presents an adaptive arc suppression method for ground faults in distribution networks, merging active and passive relay protection strategies. The method proceeds as follows: based on collected ground parameters, the fault phase is identified; compensation current is calculated from the fault's electromotive force, ground leakage resistance, and ground capacitance; current is injected at the neutral point according to the compensation current; finally, the arc suppression scheme is executed based on the zero-sequence voltage of the network's busbars. This approach incorporates both voltage- and current-based methods, addressing the limitation of fixed operation scenarios in traditional arc suppression methods. By quickly adapting to various fault situations, this method ensures an efficient and prompt response tailored to specific scenario requirements.

IPC Classes  ?

• H02H 9/00 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
• G01R 31/52 - Testing for short-circuits, leakage current or ground faults
• H02H 9/08 - Limitation or suppression of earth fault currents, e.g. Petersen coil
• H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks

Abstract

This invention relates to a method and system for adaptive reclosing of single-phase AC transmission lines in wind power systems. The invention utilizes single-ended electrical quantity to determine the type of fault. After a fault occurs, a signal acquisition device is used to sample the voltage of the fault phase. The obtained voltage is subjected to short-time Fourier transform to extract the amplitude of the fundamental frequency voltage component, and then processed with differential amplification to construct a fault nature identification criterion. Combined with a sliding time window for fault identification, if it is identified as a permanent fault, the reclosing device is locked out; if it is identified as a transient fault, the fault disappearance time is calculated to determine the reclosing time and output the closing signal. This invention is designed for adaptive reclosing after a circuit breaker trips in wind power AC transmission lines.

IPC Classes  ?

• H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
• G01R 31/52 - Testing for short-circuits, leakage current or ground faults
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
• H02J 13/00 - Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the networkCircuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network

Abstract

22 capable of providing discharge capacity, thus allowing the regenerated positive electrode material to exhibit more excellent electrochemical properties, and further reducing costs. The method is simple and easy to operate, and has modest requirements on regeneration reaction temperature, and while not needing long-time high-temperature calcination, the method can be used for simultaneously carrying out two processes polycrystalline cracking into single crystalline and lithium replenishment, thus involving low energy consumption, and being easy to popularize.

IPC Classes  ?

• H01M 10/54 - Reclaiming serviceable parts of waste accumulators
• C30B 9/00 - Single-crystal growth from melt solutions using molten solvents
• C30B 29/22 - Complex oxides
• H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
• H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
• C01G 53/00 - Compounds of nickel

Abstract

The present invention relates to the field of biomedicine, and specifically provides a nucleic acid construct, an engineered pluripotent stem cell prepared from the nucleic acid construct, and a neural stem cell, astrocyte, mesenchymal stem cell, GABAergic nerve cell and DAergic nerve cell obtained by differentiation of the engineered pluripotent stem cell. Further provided is a use of the nucleic acid construct and the various cells in treatment of diseases associated with dopaminergic neuron degeneration and/or damage.

IPC Classes  ?

• C12N 5/10 - Cells modified by introduction of foreign genetic material, e.g. virus-transformed cells
• C12N 5/0735 - Embryonic stem cellsEmbryonic germ cells
• C12N 5/0797 - Stem cellsProgenitor cells
• C12N 5/079 - Neural cells
• C12N 5/0775 - Mesenchymal stem cellsAdipose-tissue derived stem cells
• C12N 15/85 - Vectors or expression systems specially adapted for eukaryotic hosts for animal cells
• C12N 15/53 - Oxidoreductases (1)
• C12N 15/55 - Hydrolases (3)
• C12N 15/60 - Lyases (4)
• A61K 35/545 - Embryonic stem cellsPluripotent stem cellsInduced pluripotent stem cellsUncharacterised stem cells
• A61P 25/00 - Drugs for disorders of the nervous system

Abstract

r, Finally, according to the radar incidence angle parameters, the delay is changed from zenith direction to radar line of sight direction.

IPC Classes  ?

• G01S 13/90 - Radar or analogous systems, specially adapted for specific applications for mapping or imaging using synthetic aperture techniques
• G01S 7/40 - Means for monitoring or calibrating

Abstract

The present disclosure relates to the technical field of magnesium metallurgy, and in particular to a device and method for magnesium smelting by vacuum carbothermal reduction of calcined dolomite. The device includes a reaction chamber, a condensation chamber, a first temperature regulation module and an air pressure regulation module, and the reaction chamber is communicated with the condensation chamber via a gas-guide tube. In the present disclosure, different condensation zones are utilized to sequentially condense gaseous products based on dew points, effectively preventing impurities from entering the condensation process of magnesium. Additionally, based on dynamic equilibrium in the condensation process of the gaseous products within the condensation chamber, efficient condensation and collection of magnesium in the condensation zone at middle section is ensured while preventing reverse reaction between magnesium and CO in the condensation zone of magnesium, enhancing the condensation-based purification effect.

IPC Classes  ?

• C22B 26/22 - Obtaining magnesium
• C22B 1/24 - BindingBriquetting
• C22B 5/10 - Dry processes by solid carbonaceous reducing agents
• F27B 5/02 - Muffle furnacesRetort furnacesOther furnaces in which the charge is held completely isolated of multiple-chamber type
• F27B 5/04 - Muffle furnacesRetort furnacesOther furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere
• F27D 9/00 - Cooling of furnaces or of charges therein

Abstract

A high-concentration high-entropy electrolyte and a preparation method therefor, and a battery. The high-concentration high-entropy electrolyte has a high molar concentration and a high degree of confusion, and comprises a solvent, a first solute salt, and an additive salt, the first solute salt being a solute salt having a high solubility in the solvent, and the additive salt including three or more solute salts. A molar concentration of the solute salt in the high-concentration high-entropy electrolyte ranges from 20 M to 60 M, a molar concentration of the first solute salt exceeds 20 M, and the molar concentration of the first solute salt accounts for 50% or higher of the molar concentration of the high-concentration high-entropy electrolyte. A sodium-carbon dioxide battery assembled with the high-concentration high-entropy electrolyte not only has a high power density, but also has an excellent discharge specific capacity and rate performance. In addition, the battery also shows good cycling stability, and the battery generates a liquid discharge product, a formic acid, so that the blockage of a solid discharge product to a catalytic layer is effectively avoided.

IPC Classes  ?

• H01M 10/056 - Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
• H01M 10/0563 - Liquid materials, e.g. for Li-SOCl2 cells
• H01M 10/0568 - Liquid materials characterised by the solutes

Abstract

The present disclosure provides a method for designing a supercritical heat exchanger based on pseudo-phase transition partition. The method mainly includes the following steps: inputting boundary conditions of a heat exchanger; calculating an upper boundary temperature and a lower boundary temperature of a pseudo-phase transition region; calculating a temperature of an inner wall surface of a supercritical fluid; determining an upper boundary temperature of a pseudo-superheated condensation region; and dividing the heat exchanger into four sections on the basis of above three boundary temperatures and inlet and outlet temperatures, and calculating the section size and the total size of the heat exchanger. According to the method, the automatic partition determination of single-phase cooling and pseudo-superheated condensation in a supercritical air cooler can be realized, requiring no division of the heat exchanger according to equal enthalpy change or equal length, and the calculation is rapid and accurate.

IPC Classes  ?

• G06F 30/28 - Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
• G06F 113/08 - Fluids
• G06F 119/08 - Thermal analysis or thermal optimisation

Abstract

A high-concentration high-entropy electrolyte and its preparation method and battery were disclosing in the present disclosure. A high-concentration high-entropy electrolyte, including a solvent, a first solute salt and added salts, the first solute salt is a solute salt with high solubility in the solvent, while the added salts are composed of at least three solute salts, the molar concentration range of the solute salts in the high-concentration high-entropy electrolyte is between 20 M-60 M, the molar concentration of the first solute salt is greater than 20 M, and the molar concentration of the first solute salt is greater than 50% of the molar concentration of the high-concentration high-entropy electrolyte. The sodium-carbon dioxide batteries assembled with high-concentration high-entropy electrolytes not only have higher power density, but also have excellent discharge specific capacity and rate performance.

IPC Classes  ?

• H01M 10/0568 - Liquid materials characterised by the solutes
• H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
• H01M 10/0565 - Polymeric materials, e.g. gel-type or solid-type
• H01M 10/0569 - Liquid materials characterised by the solvents
• H01M 4/02 - Electrodes composed of, or comprising, active material

Abstract

The present application relates to the field of resource recovery, and discloses a method for efficiently recovering sulfur and zinc-silver from high-sulfur residues obtained in zinc hydrometallurgy. A large amount of high-sulfur residues are contained in second-stage underflow liquid obtained by performing oxygen pressure leaching. In the present application, a proper amount of iron sulfate is first added to serve as an inducing agent, iron disulfide in high-sulfur residues is converted into elemental sulfur, so as to increase the content of the elemental sulfur; in a flotation stage, reaction conditions are controlled and an inhibitor is added, so as to improve a recovery rate of sulfur, enable more metals such as lead-zinc to enter tailings, and provide a basis for further improvement of the purity of the sulfur; the tailings and hot filtered residues are mixed with filtrate to prepare a slurry, ammonia water is added to the slurry, a zinc-ammonia complex method is used to dissolve zinc-silver, then a silver mirror reaction is used to recover metallic silver, and finally a zinc-ammonia complex solution is used to absorb and capture carbon dioxide to prepare a basic zinc carbonate product. The present application is simple to operate, has good application prospects, and overcomes the problems of a low sulfur recovery rate in existing processes, an impact on sulfur purification caused by the lead-zinc entering concentrate, a low zinc-silver recovery rate and high recovery costs.

IPC Classes  ?

• C01B 17/06 - Preparation of sulfurPurification from non-gaseous sulfides or materials containing such sulfides, e.g. ores
• C01G 9/00 - Compounds of zinc
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
• C22B 11/00 - Obtaining noble metals

Abstract

The present application relates to the field of high-concentration organic wastewater and solid waste resource utilization, and discloses a method for synergistic biological evaporation treatment of coffee wastewater and solid waste. The method of the present application performs synergistic biological evaporation treatment on biofilm coffee husks, bio-dried coffee husks and bio-dried sludge which respectively serve as an expanding agent and a microbial carrier, kitchen waste as a supplementary carbon source, and coffee wastewater. The present application can achieve a good effect of synergistic treatment of agricultural and forestry waste or bio-dried sludge and coffee wastewater, and achieve the purpose of comprehensive utilization of resources by treating waste with waste.

IPC Classes  ?

• C02F 3/00 - Biological treatment of water, waste water, or sewage

Abstract

Provided is a method for preparing high-purity indium (In). The method for preparing the high-purity In includes: distilling refined In to obtain an In vapor-containing gas; and condensing the In vapor-containing gas to obtain the high-purity In; where the distilling is conducted at a temperature of 1,000° C. to 1,100° C. under a vacuum degree of 1.0×10−3 Pa to 5.0×10−2 Pa; and the condensing is conducted at a temperature of 700° C. to 900° C. under a vacuum degree of 1.0×10−3 Pa to 5.0×10−2 Pa. The In vapor-containing gas is obtained by controlling the temperature and vacuum degree of the distilling to evaporate In and impurities with a vapor pressure higher than the In. The temperature and vacuum degree of the condensing are adjusted to condense the In in the In vapor-containing gas.

IPC Classes  ?

• C22B 58/00 - Obtaining gallium or indium
• B01D 3/10 - Vacuum distillation
• B01D 3/42 - RegulationControl
• B01D 5/00 - Condensation of vapoursRecovering volatile solvents by condensation
• C22B 9/02 - Refining by liquating, filtering, centrifuging, distilling or supersonic wave action

Abstract

Provided are a battery electrolyte containing a bifunctional additive and an application thereof in a lithium-sulfur battery, belonging to the technical field of lithium-sulfur battery electrolyte. According to the disclosure, a bifunctional additive of a triazine thiol compound is used as an additive, and triazine groups and thiol groups cooperate.

IPC Classes  ?

• H01M 10/0567 - Liquid materials characterised by the additives
• H01M 4/02 - Electrodes composed of, or comprising, active material
• H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
• H01M 4/583 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx
• H01M 10/052 - Li-accumulators
• H01M 10/0569 - Liquid materials characterised by the solvents

Abstract

Provided are a battery electrolyte containing a bi-functional additive, and the use thereof in a lithium-sulfur battery, belonging to the technical field of lithium-sulfur battery electrolytes. A bi-functional additive, i.e., a triazine thiol compound, is used as an additive to improve the performance of lithium-sulfur batteries, such that the synergy of a triazine group and a thiol group remarkably ameliorates the problem of interfaces of positive and negative electrodes of lithium-sulfur batteries, and simultaneously conversion of polysulfides can be regulated and controlled so as to effectively inhibit the shuttle effect and improve the coulombic efficiency of batteries, thereby achieving good cycle stability; the preparation method is simple, thus facilitating large-scale production.

IPC Classes  ?

• H01M 10/0567 - Liquid materials characterised by the additives
• H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
• H01M 10/052 - Li-accumulators

Abstract

An uncoupled charge positioning apparatus, and a blast hole comprising the uncoupled charge positioning apparatus. The uncoupled charge positioning apparatus comprises: a sleeve (1), comprising an engagement unit (11) arranged thereon; and a plurality of brackets (12) movably connected to the sleeve (1) by means of the engagement unit (11), the plurality of brackets (12) being arranged along the circumferential direction of the sleeve (1). According to the uncoupled charge positioning apparatus, and the blast hole comprising the uncoupled charge positioning apparatus, the positions of uncoupled charge cartridges can be flexibly adjusted, so that the rock mass on the blast side can be fully destroyed, the damage to the rock mass on the side to be protected is reduced, the stability of the surrounding rock and the flatness of the excavation contour surface are ensured, and the explosive energy utilization is improved. The operation is simple, the working efficiency is high, the safety is good, and the economic cost is decreased.

IPC Classes  ?

• F42D 1/22 - Means for holding or positioning blasting cartridges or tamping cartridges in boreholes
• F42D 1/08 - Tamping methodsMethods for loading boreholes with explosivesApparatus therefor

Abstract

A method for preparing a carbon nanotube sodiophilic metal anode-free sodium metal battery electrode material is provided, and the method includes the following steps: the carbon nanotubes are modified by a dielectric barrier plasma device; the modified carbon nanotubes are mixed and stirred with a sodiophilic metal salt to obtain a precursor slurry; the precursor slurry is dried, placed in a tube furnace after drying, and heated by introducing a reducing gas to react, thereby obtaining a carbon nanotube sodiophilic metal anode-free sodium metal battery electrode material. The electrode material prepared by the method has a stable structure, excellent electrical conductivity, and excellent sodium affinity, and can be applied to anode-free sodium metal battery electrode materials. The entire preparation process is controllable, the synthesis cycle is short, and the operation is simple.

IPC Classes  ?

• H01M 4/583 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx
• H01M 4/02 - Electrodes composed of, or comprising, active material
• H01M 4/04 - Processes of manufacture in general
• H01M 10/054 - Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium

Abstract

A method for froth-controlled flotation of argillaceous lepidolite ore, including: crushing and grinding an ore, adding water to obtain pulp; adding agents thereto, and conducting roughing to obtain roughing concentrate and roughing tailing; adding agents to the roughing tailing, and conducting first scavenging to obtain first scavenging concentrate and first scavenging tailing; subjecting the first scavenging tailing to second scavenging to obtain second scavenging concentrate and second scavenging tailing; adding agents to the roughing concentrate, conducting first cleaning to obtain first cleaning concentrate and first cleaning tailing; subjecting the first cleaning concentrate to second cleaning to obtain lithium concentrate I and second cleaning tailing; combining the first scavenging concentrate, second scavenging concentrate, first cleaning tailing, and second cleaning tailing to obtain lithium-containing mixed middling, adding agents thereto, and conducting cleaning-scavenging to obtain lithium concentrate II and cleaning-scavenging tailing; and combining the lithium concentrate I and lithium the concentrate II.

IPC Classes  ?

• B03D 1/02 - Froth-flotation processes
• B03D 1/004 - Organic compounds
• B03D 1/08 - Subsequent treatment of concentrated product
• C22B 26/12 - Obtaining lithium

Abstract

A radio frequency sterilization device for food, comprising: a radio frequency assembly, wherein a first accommodating space is formed in the radio frequency assembly, the radio frequency assembly is configured to generate an electric field in the first accommodating space, and the electric field is used for sterilization; a constant-temperature box (7), located on one side of the radio frequency assembly, wherein a second accommodating space is formed in the constant-temperature box (7); and a spiral pipeline structure (12), comprising a feeding port (13) and a discharge port (8), wherein the feeding port (13) is used for allowing semi-solid food to be sterilized to enter, the spiral pipeline structure (12) comprises at least two pipeline layers arranged in parallel, the two pipeline layers are bent and communicated, one part of each pipeline layer is arranged in the first accommodating space, and the other part is arranged in the second accommodating space, and said semi-solid food entering from the feeding port (13) is sequentially sterilized, heated, and sterilized, or is sequentially heated, sterilized, and heated, and then reaches the discharge port (8), so that the temperature uniformity of said semi-solid food in the radio frequency sterilization process is kept.

IPC Classes  ?

• A23L 3/01 - Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating using irradiation or electric treatment using microwaves or dielectric heating
• A23L 3/22 - Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating loose unpacked materials while they are progressively transported through the apparatus with transport through tubes
• A23L 3/00 - Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
• A23B 7/01 - Preserving by heating by irradiation or electric treatment
• A23B 7/005 - Preserving by heating

Abstract

A recycling method of waste lithium manganate cathode materials is provided. The recycling method includes: firstly, mixing the waste lithium manganate cathode materials with sulfuric acid for hydrothermal reaction, to obtain manganese dioxide and washing solution; then reacting the washing solution with ammonium bicarbonate, to obtain manganese carbonate and lithium sulfate; and mixing the manganese dioxide, lithium sulfate and lithium hydroxide monohydrate, then performing a sintering treatment, washing and a tempering treatment in sequence, to obtain recycled lithium manganate cathode materials. The recycling method can obtain manganese dioxide, spherical manganese carbonate and lithium sulfate by adjusting the reaction temperature and reaction time, realizing the effective recovery of manganese and lithium. The lithium manganate cathode materials can be re-prepared by using the recovered manganese and lithium and adding lithium hydroxide monohydrate, and the lithium manganate cathode materials have excellent electrochemical performance.

IPC Classes  ?

• H01M 10/54 - Reclaiming serviceable parts of waste accumulators
• C01G 45/12 - Complex oxides containing manganese and at least one other metal element
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof

Abstract

A method for recycling a waste lithium manganate positive electrode material. The method comprises: firstly, mixing a waste lithium manganate positive electrode material with sulfuric acid, and then carrying out a hydrothermal reaction to obtain manganese dioxide and a washing solution; then, reacting the washing solution with ammonium bicarbonate to obtain manganese carbonate and lithium sulfate; and finally, mixing manganese dioxide, lithium sulfate and lithium hydroxide monohydrate, followed by sintering, washing and tempering treatments in sequence, thereby obtaining the recycled lithium manganate positive electrode material. The method achieves the effective recovery of manganese and lithium.

IPC Classes  ?

• C01G 45/12 - Complex oxides containing manganese and at least one other metal element
• H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
• H01M 10/54 - Reclaiming serviceable parts of waste accumulators

Abstract

222222S is higher than 90%, and the purity is greater than 95%, thereby satisfying the purity standard of copper matte in copper blowing; and the direct recovery rate of condensed As is higher than 90%, and the purity is greater than 99.5%.

IPC Classes  ?

• C22B 15/00 - Obtaining copper
• C22B 30/04 - Obtaining arsenic
• C22B 9/02 - Refining by liquating, filtering, centrifuging, distilling or supersonic wave action
• C22B 9/04 - Refining by applying a vacuum
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
• C22B 7/04 - Working-up slag

Abstract

The partition monitoring method for concrete dam operation key parts provided by the disclosure firstly utilizes the extracted monitoring data time-frequency vector to partition the concrete dam key parts, and on this basis, obtains time series measurement data of different types of monitoring instruments with high temporal and spatial correlation, so as to establish a graph structure. Then, the dependence of time dimension and variable dimension of multivariate time series data is captured, and the relationship between further learning and representation of graph attention network is provided. Furthermore, the final feature representation of time series measured data is obtained, and finally the anomaly score is calculated through the final feature representation to detect anomalies. The complementary mutual verification of multiple measuring points of monitoring instruments with various types is realized. The structural integrity and spatial distribution law of concrete dams are fully embodied.

IPC Classes  ?

• E02B 7/08 - Wall dams
• G06F 17/40 - Data acquisition and logging

Abstract

A method for extracting silver from complex lead bullion. The method comprises: extracting silver by means of condensation-crystallization-volatilization, and condensing the complex lead bullion to remove copper and some of other impurities, such as tin, arsenic and antimony, thereby obtaining low-copper lead and copper scum; crystallizing the low-copper lead to mainly enrich silver and bismuth and some of other impurities such as antimony and arsenic, thereby obtaining low-silver lead and high-silver lead; and subjecting the high-silver lead to vacuum volatilization to obtain silver bullion and lead bullion. In the method, silver is extracted by means of condensation-crystallization-volatilization, enriched by means of crystallization, and separated from lead for refining, such that the recovery period of silver is shortened by 30-50% compared with a traditional method, and the energy consumption is reduced by 10-40%.

IPC Classes  ?

• C22B 11/02 - Obtaining noble metals by dry processes
• C25C 1/20 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of noble metals
• C22B 13/06 - Refining
• C22B 13/02 - Obtaining lead by dry processes

Abstract

A fire refining method for complex lead bullion, belonging to the technical field of nonferrous metallurgy. The method comprises: condensing complex lead bullion, so as to obtain low-copper lead and copper dross I; crystallizing the obtained low-copper lead to remove silver and bismuth, so as to obtain low-silver lead and high-silver lead; adding sulfur to the obtained low-silver lead to deeply remove copper, so as to obtain copper-removed lead and copper dross II; and removing arsenic, antimony and tin from the obtained copper-removed lead via an alkaline method, so as to obtain refined lead and arsenic-antimony-tin slag. By using the ''condensation-crystallization-slagging'' method for refining lead, the present invention changes traditional six refining steps into four refining steps, where the lead refining period is shortened by 10%-30%, the silver recovery period is 20%-30% shorter than those in traditional methods, the energy consumption is reduced by 10-20% and the quantity of reagents is reduced by 30%-60%, thereby allowing for significant economic benefits and industrial application.

IPC Classes  ?

• C22B 13/10 - Separating metals from lead by crystallising, e.g. by Pattison process

Abstract

Disclosed in the present application are a method for preparing a porous carbon material by means of red mud modification and the use of the porous carbon material. The method comprises: subjecting red mud to drying, grinding, acid leaching, washing, filtering and washing to obtain a neutral red mud slurry, crushing and carbonizing waste plastic bottles, mixing same with the red mud slurry, performing magnetic stirring to realize thorough mixing, and drying and activating the formed red mud-carbon material mixture, so as to obtain a porous carbon material. In the present application, by means of simple carbonization and activation methods, industrial solid waste, i.e., red mud, and plastic are converted into an adsorptive material, coordinated gas-solid treatment is achieved, and a new idea is provided for resource utilization of the red mud; compared with a traditional adsorbent, the porous carbon material, which is prepared from carbonized plastic doped with red mud, in the present application has a better pore structure and selectivity; moreover, PFCs can be enriched into a high-concentration gas after adsorption-desorption, and a certain economic value is obtained, such that environment-friendly utilization of waste from the aluminum industry is achieved, the environment treatment cost is reduced, and the aims of pollution reduction, carbon reduction and synergistic interaction are achieved.

IPC Classes  ?

• C01B 32/324 - Preparation characterised by the starting materials from waste materials, e.g. tyres or spent sulfite pulp liquor
• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents

Abstract

The present disclosure relates to a device and method for recovering arsenic and gallium. A closed furnace body is in communication with a vacuuming pipe, and the vacuuming pipe is connected to a vacuuming mechanism. The closed furnace body includes a first furnace body, a second furnace body and a third furnace body. A first heating mechanism and a graphite crucible are arranged inside the first furnace body, the first heating mechanism being used for heating the graphite crucible. A first collection cylinder is in communication with a second collection cylinder. The device for recovering arsenic and gallium of the present disclosure is arranged with a structure for realizing directional condensation of gallium arsenide clusters and arsenic vapor, respectively, to realize high-purity recovery of arsenic and gallium.

IPC Classes  ?

• C22B 58/00 - Obtaining gallium or indium
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
• C22B 9/04 - Refining by applying a vacuum

Abstract

233; after the filter residues are dried, carrying out pyrolysis at 300-600°C to volatilize mercury for condensation and recovery; and mixing the waste residues from which arsenic and mercury are removed with biomass at a mass ratio of 1:1 to 1:5 and crushing same, and carrying out soilization composting treatment. A device for completing the method comprises an arsenic recovery unit, a mercury recovery unit and a soilization treatment unit. The method and the device of the present invention can implement full resource utilization of arsenic- and mercury-containing waste residues, involves simple operations, and has high treatment efficiency and remarkable economic benefits and social benefits.

IPC Classes  ?

• B09B 3/70 - Chemical treatment, e.g. pH adjustment or oxidation

Abstract

The present invention provides an asymmetric laminated sodium-based composite solid electrolyte and a preparation method therefor, and a battery. The composite solid electrolyte comprises a first composite solid electrolyte layer adjacent to a positive electrode, and a second composite solid electrolyte layer provided between the first composite solid electrolyte layer and a negative electrode, wherein the first composite solid electrolyte layer comprises a polymer matrix, an inorganic filler, a sodium salt and a plasticizer; and the second composite solid electrolyte layer comprises a polymer matrix, an inorganic filler, a sodium salt, a plasticizer and a conductive agent, the conductive agent accounting for 1-10% of the mass of the second composite solid electrolyte layer. The negative electrode side of the composite solid electrolyte of the present invention has an ion/electron mixed conduction characteristic, such that the interface contact between the negative electrode and the solid electrolyte can be improved, locally gathered charges on the interface of the negative electrode side can be released, sodium ions can be quickly transported and uniformly deposited, and high interface stability and high long-period charge/discharge performance of the negative electrode side of a sodium-ion battery can be achieved.

IPC Classes  ?

• H01M 10/056 - Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes

Abstract

An asymmetric sodium-based solid-state composite electrolyte includes a first solid-state composite electrolyte layer and a second composite electrolyte layer obtained by laminated coating method. Both the two solid-state composite electrolyte layers include a polymer matrix, an inorganic filler, a sodium salt and a plasticizer, the difference is the electron conductive agent added with the mass ratio ranges from 1 wt. %˜10 wt. % into the second solid-state composite electrolyte layer. In a battery assembled with the asymmetric sodium-based solid-state composite electrolyte, the first solid-state composite electrolyte layer is contiguous with a positive electrode, and the second solid-state composite electrolyte layer is disposed between the first solid-state composite electrolyte layer and a negative electrode.

IPC Classes  ?

• H01M 10/0565 - Polymeric materials, e.g. gel-type or solid-type
• H01M 10/054 - Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
• H01M 50/403 - Manufacturing processes of separators, membranes or diaphragms
• H01M 50/414 - Synthetic resins, e.g. .thermoplastics or thermosetting resins
• H01M 50/451 - Separators, membranes or diaphragms characterised by the material having a layered structure comprising layers of only organic material and layers containing inorganic material

Abstract

Provided are a vacuum distillation furnace, and a method for preparing high-purity copper particles. In view of the fact that high-purity copper prepared by the traditional method in the current industrial production has an unsatisfactory purity, a high impurity content, and a complicated composition, a vacuum distillation method is adopted. During the vacuum distillation method, most of valuable metals in a copper matrix are volatilized and enter into a gas phase, such that the metals are separated from the copper matrix, thereby allowing the purification of copper; and copper powder particles volatilized to a condensation plate have a smooth surface and a purity of 5 N grade or more.

IPC Classes  ?

• B22F 9/12 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from gaseous material
• B01D 3/10 - Vacuum distillation
• B22F 1/05 - Metallic powder characterised by the size or surface area of the particles

Abstract

Disclosed is a method for removing impurity mercury from crude selenium. The method includes: mixing a vulcanizing agent with a crude selenium slag that is crushed to not more than 200 mesh uniformly, and performing briquetting to obtain a mixed material; adding the mixed material into a sealed furnace, and subjecting the mixed material to vulcanization by heating under an inert atmosphere to obtain a vulcanized selenium; subjecting the vulcanized selenium to primary vacuum distillation, such that selenium is converted into a gas phase and collected in a form of a volatile, and generated mercury sulfide and valuable elements are enriched in a resulting residue; and subjecting the selenium to secondary distillation to further remove mercury.

IPC Classes  ?

• C01B 19/02 - Elemental selenium or tellurium
• B01D 3/10 - Vacuum distillation
• B01D 3/14 - Fractional distillation

Abstract

The present invention belongs to the technical field of magnesium metal vacuum smelting, and particularly relates to a method for smelting magnesium by means of dolomite vacuum carbon thermal reduction. In the present invention, a mixed powder of dolomite and coking coal is pressed to obtain a formed body; under a vacuum condition, the formed body is heated to be directly subjected to a carbon thermal reduction reaction, and the obtained reduced steam is condensed to obtain crystallized magnesium, wherein the temperature rise rate of heating is less than or equal to 12 K/min; and the heat preservation temperature of the carbon thermal reduction reaction is greater than or equal to 1400 K, and the heat preservation time is less than or equal to 2 h. In the method provided in the present invention, no auxiliary material needs to be added to the raw materials, such that the production cost can be effectively reduced; in addition, the present invention aims at a formed body obtained from dolomite and coking coal, and by controlling the temperature rise rate of heating to be less than or equal to 12 K/min, heat preservation coking is not needed, and the carbon thermal reduction reaction can be directly carried out, thereby effectively reducing energy consumption. Results of the embodiments show that the purity of the crystallized magnesium obtained by the method provided in the present invention is 83.62-91.20%.

IPC Classes  ?

• C22B 26/22 - Obtaining magnesium
• C22B 5/10 - Dry processes by solid carbonaceous reducing agents
• C22B 5/16 - Dry processes with volatilisation or condensation of the metal being produced
• C22B 1/24 - BindingBriquetting

Abstract

A vacuum distillation furnace and a method for manufacturing high-purity copper particles. The vacuum distillation furnace is provided with a volatilization hole plate (15) between a condensation disc (16) and an evaporation chamber, and the hole diameter of the volatilization hole plate (15) is 1-10 mm. The method for manufacturing high-purity copper particles comprises: placing a metallic copper raw material in the evaporation chamber of the vacuum distillation furnace, and carrying out vacuum distillation to obtain high-purity copper particles on the condensation disc (16), wherein the vacuum degree of vacuum distillation is 0.1-100 Pa, the temperature of vacuum distillation is 1100-1800°C, and the particle size of the high-purity copper particles is 1-100 μm. By means of a vacuum distillation method, high-purity copper condensate above 5N level can be obtained, and copper powder particles are enriched and collected; the method shortens the process flow, does not require waste liquid treatment, and has the characteristics of low costs and no pollution.

IPC Classes  ?

• C22B 9/02 - Refining by liquating, filtering, centrifuging, distilling or supersonic wave action
• C22B 9/04 - Refining by applying a vacuum
• C22B 15/14 - Refining
• B22F 9/12 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from gaseous material

Abstract

The present application relates to the field of wastewater treatment technology, and in particular, to a plastic-carbon material based on waste plastic reuse, a method for preparing same, and use thereof. The method comprises the following steps: mixing a treated waste plastic particle with ferric trichloride, and after adding water, lyophilizing the mixture; and pyrolyzing the lyophilized mixture to give the plastic-carbon material. The waste plastic particle is at least one of polyethylene, polypropylene, polyethylene terephthalate, and polymethyl methacrylate. The method features ease to operate, fewer procedures, cost-efficiency, high yield, and good bisphenol A adsorption performance, and avoids the use of toxic reagents or organic solvents, thus achieving waste plastic reuse and environment conservation.

IPC Classes  ?

• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01J 20/30 - Processes for preparing, regenerating or reactivating
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption

Abstract

A method for treating battery positive electrode material includes: cold plasma treatment of at least part of the battery positive electrode material with carbon layer on the surface to be treated to have active particles doped in the carbon layer, where the doping amount is not less than 50 ppm (Part per million). At least part of the surface of the positive electrode material of the battery contains a carbon layer and at least part of the surface has a rod-like shape. The carbon layer is a carbon layer doped with active particles after cold plasma treatment, and a high-sodium ion conductance NaF layer is formed on the surface of the positive electrode material.

IPC Classes  ?

• H01M 4/04 - Processes of manufacture in general
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers

Abstract

This invention presents an electrochemical metallurgical technique for extracting metals and sulfur from metal sulfides, offering an adjustable composition and mechanical properties during electrode preparation. The metal sulfide anode, submerged in an electrolyte with a cathode made of materials like titanium, copper, stainless steel, lead, zinc, aluminum or graphite, undergoes electrolysis. This process oxidizes sulfur in the metal sulfide to the anode and releases metal ions into the electrolyte, where they're reduced at the cathode. The method yields metal at the cathode and sulfur at the anode, with minimal environmental impact, low investment, and straightforward process.

IPC Classes  ?

• C25C 7/02 - ElectrodesConnections thereof
• C25C 1/02 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of light metals
• C25C 1/10 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of iron group metals, refractory metals or manganese of chromium or manganese
• C25C 1/12 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of copper
• C25C 1/14 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of tin
• C25C 1/16 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of zinc, cadmium or mercury
• C25C 1/18 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of lead
• C25C 1/22 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of metals not provided for in groups

Abstract

The present invention provides a battery positive electrode material and a treatment method therefor, and a battery. The treatment method for a battery positive electrode material comprises: performing a cold plasma treatment on at least part of the battery positive electrode material having a carbon layer on a surface to be treated, so as to dope the carbon layer, wherein the doping amount is not less than 50 ppm. At least part of the surface of the battery positive electrode material contains a carbon layer, and at least part of the surface has a rod-like shape, wherein the carbon layer is a carbon layer which has been subjected to a cold plasma treatment and is doped with active particles, and an NaF layer having high sodium ion conductivity is formed on the surface of the positive electrode material. The treatment method of the present invention can enhance the particle surface energy of the battery positive electrode material, improve interface affinity with an electrolyte, and can result in a positive electrode material having a uniform texture, low porosity, high ionic conductivity and high electronic conductivity.

IPC Classes  ?

• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers

Abstract

A rapid preparation method of transition metal borides includes steps of: using a tungsten rod as the cathode, and a block mixture of boron powder and metal oxide as the anode, the block mixture and the tungsten rod are placed in an plasma device; the plasma device is evacuated, and then filled with a buffer gas and an electric arc is started to obtain a transition metal boride. The present disclosure adopts the direct current arc plasma method with the advantages of simple operation, low cost, environmental friendliness and controllable reaction atmosphere to prepare the transition metal boride, the preparation process is simple, the preparation process is fast, and the environment will not be affected.

IPC Classes  ?

• C01B 35/04 - Metal borides

Abstract

The present invention relates to a rapid preparation method for a transition metal boride. The preparation method comprises the steps: according to the method of the present invention, using a tungsten rod as a cathode, using, as an anode, a mixture of boron powder and a metal oxide which is pressed into a block, and placing the blocky mixture and the tungsten rod in an electric arc furnace; and vacuumizing the electric arc furnace, then filling the electric arc furnace with a buffer gas and controlling the electric arc furnace to ignite an arc, controlling, upon igniting the blocky mixture, the electric arc furnace to extinguish the arc, and enabling the blocky mixture to continuously burn and react to obtain a transition metal boride. According to the present invention, the transition metal boride is prepared by using a direct-current arc plasma method having the advantages of simple operation, low cost, environmental friendliness, controllable reaction atmosphere and the like, the preparation process is simple, the preparation process is rapid, and no influence is caused to the environment.

IPC Classes  ?

• C01B 35/04 - Metal borides

Abstract

Disclosed in the present invention are a waste plastic combustion pretreatment device and method. The pretreatment device comprises a drying system, a crushing system, a pressurizing system, a gas supply system, a mixing system and an ejection system. The drying system is configured to perform drying treatment on waste plastics. The crushing system is connected to the drying system, and is configured to perform crushing treatment on the waste plastics. The pressurizing system is connected to the crushing system, and is configured to perform pressurizing treatment on the waste plastics. The gas supply system is configured to supply gas. The mixing system is connected to both the pressurizing system and the gas supply system, and is configured to mix the waste plastics with the gas supplied by the gas supply system. The ejection system is connected to the mixing system, and is configured to jointly eject the mixed waste plastics and gas supplied by the gas supply system. Compared with the prior art, the waste plastic combustion pretreatment device and method disclosed in the present invention can combust waste plastics more thoroughly.

IPC Classes  ?

• F23G 7/12 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of specific waste or low grade fuels, e.g. chemicals of plastics, e.g. rubber
• F23G 5/04 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels including pretreatment drying
• F23G 5/033 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels including pretreatment comminuting or crushing
• F23G 5/02 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels including pretreatment
• F23G 5/44 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels DetailsAccessories

Abstract

A method and a system for identifying a glacial lake outburst debris flow (GLODF) are provided. The method is obtained based on considering induced influences of slopes of channels and particle sizes of source particles on the GLODF. The method not only compensates for deficiencies in identifying the GLODF, but also realizes determination of the GLODF, which provides data basis for disaster prevention and control layout such as monitoring and early warning on a glacial lake and assists preventing and managing disasters caused by the GLODF. Meanwhile, multiple parameters used in the method are easy and convenient to obtain, and the parameters can be directly used on site, which saves engineering cost, improves working efficiency, and has high practical and promotional value in environmental protection and disaster prevention and mitigation.

IPC Classes  ?

• G01N 15/02 - Investigating particle size or size distribution
• G06F 17/11 - Complex mathematical operations for solving equations

Abstract

in vitroin vitro culture systems for producing the stem cells.

IPC Classes  ?

• C12N 5/0735 - Embryonic stem cellsEmbryonic germ cells
• C12N 5/074 - Adult stem cells
• C12N 5/071 - Vertebrate cells or tissues, e.g. human cells or tissues
• A61K 35/48 - Reproductive organs
• C12N 5/00 - Undifferentiated human, animal or plant cells, e.g. cell linesTissuesCultivation or maintenance thereofCulture media therefor

Abstract

44F solution into the solution A at a temperature of 40-60°C while stirring and continuously reacting for 0.2-1 h, then adding a copper sulfate solution and a sodium citrate mixture solution and reacting for 0.5-1 h, carrying out standing treatment for 0.5-1 h, carrying out solid-liquid separation, washing a solid 3-5 times alternately in the order of absolute ethyl alcohol-water-absolute ethyl alcohol, and drying to obtain a solid B; in a protective atmosphere, heating the solid B at a constant rate until the temperature is 500-600°C, and carrying out high-temperature roasting for 0.5-4 h to obtain aluminum-copper alloy powder; and in an air atmosphere, heating the aluminum-copper alloy powder at a constant rate until the temperature is 500-800°C, and carrying out high-temperature roasting for 1-4 h to obtain an Al-Cu@CuO high-temperature phase change heat storage material having a core-shell structure.

IPC Classes  ?

• C09K 5/06 - Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice-versa
• B01J 23/72 - Copper

Abstract

Provided is a recovery method for valuable metals in copper anode slime. By using the recovery method of the disclosure, selenium, copper, tellurium, arsenic, lead, bismuth, and precious metals gold and silver in the copper anode slime are recovered. The method adopts two-step vacuum carbothermal reduction to replace reduction smelting of anode slime and stepwise blowing of noble lead in the traditional pyrometallurgy, and avoids the emission of arsenic-containing soot in the traditional process. The recovered gold-rich residue contains almost no base metals such as lead, bismuth, antimony, and arsenic. After subjecting the gold-rich residue to leaching gold by chlorination and reduction, a gold powder could be obtained therefrom with a lower content of base metals than traditional processes. Therefore, the method greatly reduces the amount of produced slag, shortens the production cycle, and reduces the loss of precious metals in the slag.

IPC Classes  ?

• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
• C22B 1/06 - Sulfating roasting
• C22B 13/02 - Obtaining lead by dry processes
• C22B 15/00 - Obtaining copper
• C22B 30/04 - Obtaining arsenic
• C22B 30/06 - Obtaining bismuth
• C22B 61/00 - Obtaining metals not elsewhere provided for in this subclass
• C25C 1/20 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of noble metals

Abstract

A high-calorific-value combustible solid waste improved calcium magnesium phosphate fertilizer, a preparation method therefor and a use thereof. The improved calcium magnesium phosphate fertilizer is prepared from calcium magnesium phosphate fertilizer raw materials and combustible solid wastes. Conventional coke for preparative combustion is replaced by the combustible solid wastes, and waste recycling is achieved by using the high calorific value of the combustible solid wastes. The preparation method comprises: mixing combustible solid wastes with phosphorite and magnesium silicate minerals, carrying out pyrolysis treatment by using a rotary furnace, carrying out negative-pressure cooling on a mixed melt, and then drying and grinding to obtain a calcium magnesium phosphate fertilizer, or using combustible solid wastes as fuel, and mixing ash generated after combustion into the calcium magnesium phosphate fertilizer in a specific proportion. The improved calcium magnesium phosphate fertilizer is combined with combustible solid waste ash, so that the improved calcium magnesium phosphate fertilizer is rich in a large amount of inorganic and organic nutrient elements, the nutrient elements of the fertilizer are richer, and fertilizer efficiency is better; and on the basis of improving the fertilizer efficiency, waste recycling is realized, costs are reduced, and obvious economic benefits are achieved.

IPC Classes  ?

• C05G 1/00 - Mixtures of fertilisers covered individually by different subclasses of class
• C05G 5/10 - Solid or semi-solid fertilisers, e.g. powders

Abstract

222 sequestration.

IPC Classes  ?

• C01B 32/55 - Solidifying

Abstract

A sesquiterpenoid derivative and use thereof in preparing a broad-spectrum antiviral drug provided. The sesquiterpenoid derivative can stimulate heterogeneous nuclear ribonucleoprotein A2/B1, activate the cell signal pathway of TANK-binding kinase 1-interferon regulatory factor 3, and increase the expression and secretion of endogenous type I interferon. As a result, it can inhibiting various viruses and can be used as a broad-spectrum antiviral drug for preventing or treating various viral infectious diseases and symptoms, including Covid-19, vesicular stomatitis virus VSV-G, AIDS virus, hepatitis C virus, Japanese encephalitis virus, influenza virus, poliovirus, Coxsackie virus, dengue virus, rotavirus, tobacco mosaic virus, measles virus, mumps virus, Ebola virus, Marburg virus, herpes virus and adenovirus. Sesquiterpenoid derivatives can be made as a raw material into oral dosage form such as tablet, capsule and dripping pill, or clinically acceptable pharmaceutical preparation such as inhalant and injection.

IPC Classes  ?

• C07D 493/10 - Spiro-condensed systems
• A61K 31/35 - Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom
• A61P 31/14 - Antivirals for RNA viruses

Abstract

A method for enhancing weathering of coal gangue to form soil by using medium and low temperature waste heat. The method is implemented by means of the following steps: (1) hot water or water at a natural temperature is introduced into a coal gangue pile for leaching and the coal gangue pile is then baked with flue gas, coal gangue mineral particles undergo water absorption and thermal expansion, and silicate minerals are dissolved out and reconstructed; (2) after hot water treatment, the coal gangue is allowed for standing, the water is discharged, the coal gangue is cooled, oxygen enters mineral gaps, the mineral particles undergo water loss, cooling, and shrinkage, sulfide minerals are oxidized, and the particles are crushed to expose activated crystal faces; (3) steps 1 and 2 are repeated until the mineral particles are pulverized and weakened, and the coal gangue particle size is reconstructed; and (4) the fine sand content in the coal gangue is increased, the capacities of preservation of soil moisture and preservation of soil fertility are enhanced, and the treatment is completed. The method promotes coal gangue pulverization and weakening by using medium and low temperature waste heat which is difficult to be used by coal production enterprises, to accelerate weathering of coal gangue to form soil, thereby realizing resource recycling of coal gangue.

IPC Classes  ?

• B09B 3/40 - Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
• B09B 3/70 - Chemical treatment, e.g. pH adjustment or oxidation
• C01B 33/40 - Clays
• B02C 19/18 - Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating

Abstract

A UAV surface coating includes at least a bonding layer, an antioxidant layer, an oxygen-blocking propagation layer and a heat-insulation cooling layer. The coating is fabricated on a surface of a UAV machine body or covers on the surface of the UAV machine body through a composite material matrix. The UAV machine body is made of lightweight material, and the composite material matrix includes a resin-based composite matrix and a ceramic-based composite matrix. Wherein, a thickness of the bonding layer is from 20 μm to 200 μm, a thickness of the oxygen-blocking propagation layer is from 20 μm to 200 μm, and a thickness of the heat-insulation cooling layer is from 80 μm to 1000 μm.

IPC Classes  ?

• C23C 28/04 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of inorganic non-metallic material
• C04B 35/80 - Fibres, filaments, whiskers, platelets, or the like
• C04B 35/83 - Carbon fibres in a carbon matrix
• C04B 41/45 - Coating or impregnating
• C04B 41/50 - Coating or impregnating with inorganic materials
• C04B 41/51 - Metallising
• C04B 41/52 - Multiple coating or impregnating
• C08J 5/24 - Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
• C23C 4/11 - Oxides
• C23C 14/20 - Metallic material, boron or silicon on organic substrates
• C23C 14/30 - Vacuum evaporation by wave energy or particle radiation by electron bombardment
• C23C 14/58 - After-treatment
• C23C 24/04 - Impact or kinetic deposition of particles

Abstract

An sgRNA for treating Duchenne muscular dystrophy by the activation of utrophin, and a use. The sgRNA is an sgRNA capable of activating the transcription and translation expression of human or mouse utrophin; and the DNA sequence of the sgRNA is as represented by SEQ ID NO. 1-SEQ ID NO. 20 or SEQ ID NO. 21-SEQ ID NO. 39. By means of sgRNAs targeting endogenous utrophin, the sgRNAs can efficiently activate the transcription and translation expression of human and mouse utrophin, thus providing a therapeutic option for the treatment of Duchenne muscular dystrophy.

IPC Classes  ?

• C12N 15/113 - Non-coding nucleic acids modulating the expression of genes, e.g. antisense oligonucleotides
• A61K 48/00 - Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseasesGene therapy
• A61K 38/46 - Hydrolases (3)
• A61P 21/00 - Drugs for disorders of the muscular or neuromuscular system

Abstract

Provided in the present invention are a chemiluminescent reagent for detecting mercaptan, a synthesis method and the use, belonging to the technical field of small-molecular chemiluminescent probes. The present invention comprises a substrate chromene skeleton which specifically undergoes a "click" nucleophilic reaction with mercaptan and a modified adamantane-dioxetane (Schaap's) type chemiluminescent group. A chemiluminescent probe in the present invention can be used for in-vivo and in-vitro mercaptan (RSH) detection, involving detection and imaging of mercaptan (RSH) in biological specimens, such as tumor cells, animal living bodies and cancer tissue specimens. The chemiluminescent probe in the present invention has the characteristics of high sensitivity and high specificity, and is an important technical breakthrough.

IPC Classes  ?

• C07D 407/12 - Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group containing two hetero rings linked by a chain containing hetero atoms as chain links
• C09K 11/06 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing organic luminescent materials
• G01N 21/64 - FluorescencePhosphorescence

Abstract

Provides is a method for denitration of carbothermally reduced iron-containing nonferrous metal smelting slag mixed with advanced oxidizer. In the method, the iron-containing smelting slag is subjected to carbothermal reduction, such that metals or metal oxides in the smelting slag are reduced and transformed into active catalysts which could activate hydrogen peroxide to generate free radicals. Hydrogen peroxide is catalytically decomposed, generating ·OH free radicals, and ·OH free radicals generated further oxidize NOx. The reactions are performed at ambient temperature

IPC Classes  ?

• C22B 7/04 - Working-up slag
• C22B 5/10 - Dry processes by solid carbonaceous reducing agents

Abstract

A method for preparing a sodium super ionic conductor solid electrolyte by low-dimensional crystallization belongs to a field of energy materials. The method is based on the theory of negative ion coordination polyhedron growth unit, and uses low-temperature plasma as a protective gas of a spray drying equipment. While evaporating the solvent in a sodium super ionic conductor solid electrolyte precursor slurry, plasma active groups modify the particle surface of the sodium super ionic conductor solid electrolyte precursor particles in-situ. A free space dimension of crystal growth in the crystallization process is reduced, and directional growth of crystals in the solid phase sintering process is induced. Secondly, the dispersion stability of the sodium super ionic conductor solid electrolyte precursor particles is improved. Compared with the traditional high-temperature solid-state sintering process, the method has the advantages of fast crystallization speed, high crystal purity and integrity, good compactness, and uniform particles.

IPC Classes  ?

• H01M 10/0562 - Solid materials

Abstract

Disclosed in the present invention is a method for preparing a sodium superionic conductor type solid electrolyte by means of low-dimensional crystallization, which method belongs to the field of energy materials. In the present invention, based on the anion coordination polyhedron growth unit theory, low-temperature plasma is used as a protective gas of a spray-drying device, and plasma active groups modify the surfaces of sodium superionic conductor type solid electrolyte precursor particles in situ while a sodium superionic conductor type solid electrolyte precursor slurry is being evaporated, such that the free space dimensionality of crystal growth during the process of crystallization is reduced, and the directional growth of crystals during the process of solid-phase sintering is induced. Secondly, the dispersion stability of the sodium superionic conductor type solid electrolyte precursor particles is improved. Compared with a traditional high-temperature solid-phase sintering process, the method has the advantages of a fast crystallization speed, high levels of crystal purity and integrity, good compactness, uniform particles, etc. The method of the invention has a short production period and a low cost, can be commercialized on a large scale, and further achieves the commercial application of the solid electrolyte.

IPC Classes  ?

• H01M 10/054 - Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
• C01B 25/16 - Oxyacids of phosphorusSalts thereof

Abstract

A targeted oxidizing solvent for regenerating a waste lithium-ion positive electrode material, and the use thereof. The targeted oxidizing solvent is composed of sodium methylene bis-naphthalene sulfonate and tetrahydronaphthalene in a mass-volume ratio of 0.33-0.45 g/ml. The targeted oxidizing solvent can be used for regenerating a waste lithium-ion positive electrode material. The targeted oxidizing solvent can not only uniformly disperse insoluble waste lithium-ion positive electrode material in a solution, but also does not damage the structure of the waste lithium-ion positive electrode material; in addition, since sodium methylene bis-naphthalene sulfonate can perfectly combine with an alkyl lithium compound / a phenyl lithium compound, such that targeted supplementation of lithium ions can be realized, thereby realizing the repair of structural defects present in a waste lithium-ion positive electrode material; and the targeted oxidizing solvent can be used for replacing a deep eutectic solvent which is more expensive, and only non-toxic gases such as carbon dioxide are released during the whole process, which is more environmentally friendly.

IPC Classes  ?

• H01M 10/54 - Reclaiming serviceable parts of waste accumulators

Abstract

An apparatus and method for preparing high-purity spherical magnesium and/or high-purity magnesium powder are provided. The apparatus includes a vertical furnace body, a heating zone, and a condensing zone, where a periphery of the condensing zone is provided with a first thermal insulation device and a second thermal insulation device sequentially from bottom to top, and each of the first thermal insulation device and the second thermal insulation device is removably arranged; the periphery of the condensing zone is further provided with a liquid cooling device; a gas inlet and a gas outlet are formed in the condensing zone; and an inner wall of the condensing zone is provided with an arrangement structure configured to arrange a collection device. A heating temperature of a material and condensation conditions in the condensing zone are controlled to make an evaporated magnesium vapor condensed on the collection device in the condensing zone.

IPC Classes  ?

• B22F 9/08 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
• B22F 9/06 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material

Abstract

The present disclosure discloses an application of cuprous sulfide in a recovery of Au (III) from aqueous solutions, which relates to the fields of hydrometallurgy and precious metal recovery. The method of the present disclosure uses cuprous sulfide nanoparticles to recover Au (III) from aqueous solution, and undergoes gold adsorption under mechanical stirring. The method described in the present disclosure can efficiently recover Au (III) from aqueous solutions, has good recovery effects on Au (III) from acidic waste liquid, and has the advantages of energy conservation, environmental protection, and low cost.

IPC Classes  ?

• C22B 11/00 - Obtaining noble metals
• B01D 15/08 - Selective adsorption, e.g. chromatography
• B01J 20/02 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material
• B01J 20/30 - Processes for preparing, regenerating or reactivating
• C22B 3/20 - Treatment or purification of solutions, e.g. obtained by leaching

Abstract

A circular RNA, a vector, and a use of the vector. The circular RNA comprises an antisense sequence which may specifically bind to a target RNA by means of complementary base pairing, and a 5' connecting sequence and a 3' connecting sequence connected to the two sides of the antisense sequence; the 5' connecting sequence may form a stem-loop structure with the 3' connecting sequence by means of complementary pairing. The vector comprises the circular RNA, a twister ribozyme connected to the 3' connecting sequence, a twister ribozyme connected to the 5' connecting sequence, a promoter and an expression vector. The antisense sequence in the circular RNA specifically binds to precursor messenger mRNA, so as to inhibit the entry of a splicing factor and thereby regulate an RNA splicing process; this may be used for regulating exon skipping at the RNA level, thereby excising pathogenic exons to correct pathogenic mutations, and may be applied to the preparation of a drug for regulating exon skipping, and the preparation of a drug for treating a disease caused by genetic mutations.

IPC Classes  ?

• C12N 15/113 - Non-coding nucleic acids modulating the expression of genes, e.g. antisense oligonucleotides
• A61K 31/7105 - Natural ribonucleic acids, i.e. containing only riboses attached to adenine, guanine, cytosine or uracil and having 3'-5' phosphodiester links
• A61P 21/04 - Drugs for disorders of the muscular or neuromuscular system for myasthenia gravis

Abstract

Disclosed in the present invention are preparation of a combination of stem cells and a hydrogel as a biomaterial, and the use of the combination in spinal cord injuries. The preparation comprises the following steps: preparing methacrylate gelatin (GelMA) and hyaluronic acid methacryloyl (HAMA); preparing a hydrogel solution, combining mesenchymal stem cells and/or neuroepithelial stem cells subjected to a standard culture, and wrapping the cells in the prepared hydrogel to obtain stem cell-loaded hydrogel or hydrogel microspheres; and transplanting the stem cell-loaded hydrogel or hydrogel microspheres at the site of a spinal cord injury for treatment, and evaluating the effect. The combination of the present invention is used for repairing spinal cord injuries, uses the biomaterial, and has a low immunogenicity, good cell biocompatibility and certain biological functions. After transplantation, the combination can reduce the excessive aggregation of astrocytes after a spinal cord injury, reduce the formation of glial scars, improves bladder and motor function, and can promote the regeneration and repair of nerves after spinal cord injuries, further promoting the behavioral recovery of animals with spinal cord injuries.

IPC Classes  ?

• A61K 35/30 - NervesBrainEyesCorneal cellsCerebrospinal fluidNeuronal stem cellsNeuronal precursor cellsGlial cellsOligodendrocytesSchwann cellsAstrogliaAstrocytesChoroid plexusSpinal cord tissue
• A61K 9/16 - AgglomeratesGranulatesMicrobeadlets
• A61K 47/36 - PolysaccharidesDerivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin
• A61P 25/00 - Drugs for disorders of the nervous system
• A61K 35/28 - Bone marrowHaematopoietic stem cellsMesenchymal stem cells of any origin, e.g. adipose-derived stem cells

Abstract

The titanium-containing oxide slag, low-purity silicon and slagging fluxes are subject to reduction smelting together, and a bulk Si—Ti intermediate alloy is obtained by slag-metal separation; the obtained bulk Si—Ti intermediate alloy is crushed into Si—Ti intermediate alloy particles; and the obtained Si—Ti intermediate alloy particles are used as an anode, metallic molybdenum or metallic nickel as a cathode, metallic titanium as a reference electrode, and NaCl—KCl—NaF together with small amounts of Na3TiF6 or K3TiF6 as a molten salt, to carry out the electrolysis under a high-purity argon atmosphere at a temperature of 973 K. Ti in the Si—Ti intermediate alloy particles dissolved at the anode and deposited at the cathode, while Si in the Si—Ti intermediate alloy particles fell off from the anode as metallic silicon powder.

IPC Classes  ?

• C25C 3/28 - Electrolytic production, recovery or refining of metals by electrolysis of melts of titanium, zirconium, hafnium, tantalum or vanadium of titanium
• C22B 34/12 - Obtaining titanium

Abstract

A method for determining a consistency coefficient of a power-law cement grout includes: determining a water-cement ratio of the power-law cement grout; according to engineering practice requirements, determining a time required to determine the consistency coefficient of the power-law cement grout; and obtaining the consistency coefficient of the power-law cement grout. The method is accurate and reliable, requires less calculation, etc.; and has very high practical value and popularization value in environmental protection and ecological restoration.

IPC Classes  ?

• C04B 7/36 - Manufacture of hydraulic cements in general

Abstract

A method for monitoring mechanochemical activation of metal powders in dynamic electrochemical environment and a device thereof are provided. The method includes constructing a dynamic testing environment in an electrochemical cell, using a three-electrode system, and collecting data from an external electrochemical workstation. The three-electrode system is composed of the working metal plate, the reference electrode, and the platinum electrode. The dynamic testing environment includes small load impacts and changes in pH and composition of the solution. Under the premise of simulating the production environment of the mechanical plating and the water-based metal coating material, the monitoring method described in the present disclosure cooperates with an electrochemical workstation for OCPT testing to achieve the monitoring of mechanochemical activation of metal powders in dynamic electrochemical environment.

IPC Classes  ?

• G01N 27/30 - Electrodes, e.g. test electrodesHalf-cells
• G01N 27/403 - Cells and electrode assemblies
• G01N 27/414 - Ion-sensitive or chemical field-effect transistors, i.e. ISFETS or CHEMFETS
• G01N 27/416 - Systems
• G01N 33/208 - Coatings, e.g. platings
• G01N 17/02 - Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement

Abstract

A method for determining a three-dimensional tortuosity of a loose and broken rock-soil mass, includes the following steps: a particle grading curve of the loose and broken rock-soil mass is obtained by utilizing a particle size analysis, and followed by calculating an equivalent particle size and an average particle size; a porosity of the loose and broken rock-soil mass is obtained by utilizing a moisture content test, a density test, and a specific gravity test; the three-dimensional tortuosity of the loose and broken rock-soil mass is obtained by utilizing the equivalent particle size, the average particle size and the porosity of the loose and broken rock-soil mass. The method has the advantages of simple logic, accuracy and reliability, simple and fast parameter determination, and has high practical value and promotion value in the field of environmental protection and ecological restoration technology.

IPC Classes  ?

• G01N 15/08 - Investigating permeability, pore volume, or surface area of porous materials
• G01N 33/24 - Earth materials

Abstract

A nonlinear oxygen-enriched injection method based on chaotic mapping and electronic device is disclosed, including: obtaining a chaotic gas injection volume corresponding to a current speed change period according to a chaotic mapping value corresponding to the current speed change period and a peak gas injection volume in an oxygen-enriched injection process; determining a rotational speed of a fan blade in a fan component corresponding to the current speed change period according to the chaotic gas injection volume; updating a rotational speed of a direct current (DC) motor in the fan component corresponding to the current speed change period according to the rotational speed of the fan blade in the fan component, and driving the fan blade to rotate according to an updated rotational speed of the DC motor, so as to update an air output of the fan component. The above operations are repeated until a last stage.

IPC Classes  ?

• C22B 9/05 - Refining by treating with gases, e.g. gas flushing

Abstract

A green and efficient refining method for complex crude tins, which belongs to the technical field of pyrometallurgy of non-ferrous metals. The method comprises: subjecting a crude tin melt obtained by reduction smelting to a condensation operation twice for iron and arsenic removal, combining produced tin B and condensation residues, and feeding same into a centrifugal machine for an iron and arsenic removal operation; combining a crude tin melt produced by the second condensation operation and a crude tin melt produced by the iron and arsenic removal operation in the centrifugal machine, and subjecting same to selective oxidation to remove copper, arsenic, nickel and antimony; subjecting the treated crude tin melt to continuous crystallization to remove lead, bismuth and silver; or subjecting the treated crude tin melt to continuous crystallization to remove lead, bismuth and silver; and subjecting the treated crude tin melt to vacuum volatilization to deeply remove lead and bismuth. The whole process is safe and controllable, and has high adaptability to raw materials; crude tins with different tin-containing components can all be effectively treated, the direct recovery rate of tin is high, the amount of generated waste residues is small, and the process is green and environmentally friendly; and refined tins meeting various grade standards prescribed in GB/T728-2020 can be obtained by selecting different processes.

IPC Classes  ?

• C22B 25/08 - Refining
• C22B 30/02 - Obtaining antimony
• C22B 30/04 - Obtaining arsenic
• C22B 1/00 - Preliminary treatment of ores or scrap
• C22B 9/02 - Refining by liquating, filtering, centrifuging, distilling or supersonic wave action
• C22B 9/04 - Refining by applying a vacuum
• C22B 15/00 - Obtaining copper
• C22B 23/02 - Obtaining nickel or cobalt by dry processes

Abstract

A method, device, system, and storage medium for tracking a moving target are provided. The method uses three-dimensional radar observation data to construct a state vector and a motion model of the moving target, thereby to construct a state equation and an observation equation for achieving filtering and tracking within a linear Gaussian framework. The disclosure is also suitable for a moving target in a two-dimensional scene with a distance and an azimuth, and the disclosure use a two-dimensional observation vector to construct a dynamic system to achieving tracking of the moving target. The disclosure can be used in radar systems containing Doppler measurements, and tracking of moving targets can be implemented by performing dimension-expansion processing on observation equations.

IPC Classes  ?

• G01S 7/41 - Details of systems according to groups , , of systems according to group using analysis of echo signal for target characterisationTarget signatureTarget cross-section
• G01S 13/58 - Velocity or trajectory determination systemsSense-of-movement determination systems
• G01S 13/66 - Radar-tracking systemsAnalogous systems

Abstract

The present invention belongs to the technical field of secondary resource recovery in the metallurgical industry, and particularly relates to an arsenic and gallium recovery device and method. In the arsenic and gallium recovery device, a closed furnace body is in communication with a vacuumizing pipe; the vacuumizing pipe is connected to a vacuumizing mechanism; the closed furnace body comprises a first furnace body, a second furnace body and a third furnace body; a first heating mechanism and a graphite crucible are provided in the first furnace body; the first heating mechanism is configured to heat the graphite crucible; a second heating mechanism and a first collecting cylinder are provided in the second furnace body; a second collecting cylinder is provided in the third furnace body; the first furnace body is detachably connected to the second furnace body; the graphite crucible is in communication with the first collecting cylinder; and the first collecting cylinder is in communication with the second collecting cylinder. The arsenic and gallium recovery device of the present invention has a structure that realizes directional condensation of both a gallium arsenide cluster and arsenic vapor, thereby realizing high-purity recovery of arsenic and gallium.

IPC Classes  ?

• F27B 14/04 - Crucible or pot furnacesTank furnaces adapted for treating the charge in vacuum or special atmosphere
• F27B 14/08 - Details specially adapted for crucible, pot or tank furnaces
• C22B 58/00 - Obtaining gallium or indium
• C22B 30/04 - Obtaining arsenic

Abstract

The present invention relates to the technical field of magnesium metallurgy, in particular to an apparatus and method for magnesium production by means of vacuum carbothermic reduction of calcined dolomite. The apparatus comprises a reaction chamber, a condensation chamber, a first temperature regulation and control module, and an air pressure regulation and control module, wherein the reaction chamber communicates with the condensation chamber via a drainage pipeline, and the drainage pipeline is used for achieving dynamic balance of the condensation process of gas products in the condensation chamber; and a plurality of condensation zones are arranged in the condensation chamber. In the present invention, gas products are sequentially condensed according to different dew points from high to low by using different condensation zones, such that impurities are effectively prevented from being mixed into the condensation process of magnesium; moreover, on the basis of the dynamic balance of the condensation process of gas products in the condensation chamber, magnesium can not only be efficiently condensed and collected in a middle-section condensation zone, but can also be prevented from undergoing a reverse reaction with CO in a magnesium condensation zone, such that the condensation purification effect is improved; and in addition, during the production of magnesium by means of vacuum carbothermic reduction of calcined dolomite, the addition of a catalyst can obviously improve the degree of reaction reduction, and the catalytic effect of a sodium fluoride catalyst is significantly superior to that of a calcium fluoride catalyst.

IPC Classes  ?

• C22B 5/16 - Dry processes with volatilisation or condensation of the metal being produced
• C22B 26/22 - Obtaining magnesium
• C22B 5/10 - Dry processes by solid carbonaceous reducing agents

Abstract

An electrochemical metallurgy method for extracting a metal and sulfur from a metal sulfide, relating to the technical field of metallurgical and chemical industry. The method comprises: preparing a metal sulfide into an electrode, i.e., a metal sulfide electrode, and adjusting the components and mechanical properties of the metal sulfide in the preparation process; and taking the metal sulfide electrode as an anode, and inserting the anode and a cathode into an electrolyte at an interval to form an electrode array for electrolysis. The sulfur element in the metal sulfide is oxidized and adsorbed onto the anode in the form of elemental sulfur, and metal ions enter the electrolyte and undergo a reduction reaction on the surface of the cathode to generate a metal element. The cathode is titanium, copper, stainless steel, lead, zinc, aluminum or graphite. The metal sulfide electrode is placed in the electrolyte for electrolysis to obtain a cathode metal and anode sulfur, so as to realize extraction of metal and sulfur.

IPC Classes  ?

• C25B 1/01 - Products
• C25C 7/00 - Constructional parts, or assemblies thereof, of cellsServicing or operating of cells
• C25C 7/02 - ElectrodesConnections thereof
• C25C 1/00 - Electrolytic production, recovery or refining of metals by electrolysis of solutions
• C25B 11/02 - ElectrodesManufacture thereof not otherwise provided for characterised by shape or form
• C25B 11/04 - ElectrodesManufacture thereof not otherwise provided for characterised by the material

Abstract

An apparatus and method for preparing high-purity spherical magnesium and/or high-purity magnesium powder, the apparatus comprising a vertical furnace body (3), a heating zone and a condensation zone, wherein the periphery of the condensation zone is sequentially provided with a first heat preservation device (8) and a second heat preservation device (6) from bottom to top, the first heat preservation device (8) and the second heat preservation device (6) being detachably mounted; the periphery of the condensation zone is provided with a liquid cooling device; the condensation zone is further provided with a gas inlet and a gas outlet; and an inner wall of the condensation zone is provided with a mounting structure for mounting a collection device (4). By means of controlling the heating temperature of materials and the condensation condition in the condensation zone, evaporated magnesium vapor is condensed into high-purity spherical magnesium and/or high-purity magnesium powder having different shapes and sizes on the collection device (4) of the condensation zone.

IPC Classes  ?

• B22F 9/12 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from gaseous material
• B22F 1/065 - Spherical particles

Abstract

12.

IPC Classes  ?

• C22C 45/08 - Amorphous alloys with aluminium as the major constituent
• C22C 1/04 - Making non-ferrous alloys by powder metallurgy
• C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon

Abstract

The present disclosure relates to a visible light-catalyzed translucent concrete, and a preparation method and use thereof. The preparation method includes: extracting an iron oxide from a copper slag, mixing the iron oxide with TiO2 to obtain a photocatalyst, and then mixing the photocatalyst with an additive to obtain a photocatalytic slurry; preparing a concrete slurry using the copper slag after iron extraction as an aggregate; and pouring the photocatalytic slurry, the concrete slurry, and the photocatalytic slurry in sequence into a mold pre-laid with an optical fiber, to obtain the visible light-catalyzed translucent concrete. In the visible light-catalyzed translucent concrete, iron in the copper slag is used as a part of raw materials of the photocatalyst, and the copper slag after iron extraction is used as an aggregate to replace natural sand and gravel. This solves environmental pollutions caused by the copper slag and realizes resource utilization.

IPC Classes  ?

• C04B 7/153 - Mixtures thereof with other inorganic cementitious materials or other activators
• C04B 7/36 - Manufacture of hydraulic cements in general
• C04B 7/43 - Heat treatment, e.g. precalcining, burning, meltingCooling
• B28B 1/52 - Producing shaped articles from the material specially adapted for producing articles from mixtures containing fibres

Abstract

The present disclosure relates to a method for production of CNHs composite material. The method includes the following steps: a first step: the silicon particles and graphite powder are mixed for a preset time by planetary ball mill device, and the weight ratio of silicon element to carbon element is 10-40%, then the Si/C precursor is obtained; a second contact step: the Si/C precursor is pressed into a precursor block, then using precursor block to the CNHs composite material by a DC arc plasma device.

IPC Classes  ?

• C01B 32/18 - NanoonionsNanoscrollsNanohornsNanoconesNanowalls

Abstract

The present disclosure provides a method for wet removal of sulfur dioxide by silicate bacteria-enhanced pulp. The method includes: treatment of ore waste residue, activation and domestication of silicate bacteria, preparation of pulp, removal of sulfur dioxide, and resource utilization of a desulfurization product. The present disclosure combines flue gas desulfurization with resource utilization of the ore waste residue, and improves a desulfurization efficiency of the method by the pulp and a utilization rate of ore waste residue resources through silicate bacteria. The present disclosure has a high desulfurization efficiency, simple production process, and low cost, and realizes the recycling of resources such as the ore waste residue, the sulfur dioxide, and silicon. The present disclosure has obvious economic and environmental benefits and broad prospects for use.

IPC Classes  ?

• B01D 53/50 - Sulfur oxides
• B01D 53/84 - Biological processes
• C22B 3/18 - Extraction of metal compounds from ores or concentrates by wet processes with the aid of microorganisms or enzymes, e.g. bacteria or algae

Abstract

Disclosed is a method for culturing a genetically engineered cell for treating Parkinson's disease. By introducing the three key genes required for the synthesis of neurotransmitter dopamine (DA), namely tyrosine hydroxylase (TH), aromatic amino acid decarboxylase (ADDC), and GTP-cyclohydrolase 1 (GCH1), into in-vitro cultured mesenchymal stem cells (MSCs) by genetic engineering methods, the MSCs express the three genes and thus synthesize neurotransmitter DA. The MSCs capable of synthesizing neurotransmitter DA are then transplanted to the corpus striatum to treat Parkinson's disease (PD). According to the present invention, the MSC medicament provides an exogenous supplemental source of neurotransmitter dopamine for treating PD, and features cost-efficiency, high activity, low immunogenicity, and significant therapeutic effect. According to the present invention, the medicament prepared from human MSC has no adverse effects that may cause symptomatic fluctuation, and can remain viable and exert activity in a host body for a long time, thereby providing an experimental basis and a theoretical foundation for establishing PD therapeutic strategies and developing novel stem cell therapies.

IPC Classes  ?

• C12N 5/10 - Cells modified by introduction of foreign genetic material, e.g. virus-transformed cells
• C12N 5/0775 - Mesenchymal stem cellsAdipose-tissue derived stem cells
• C12N 15/53 - Oxidoreductases (1)
• C12N 15/60 - Lyases (4)
• C12N 15/55 - Hydrolases (3)
• C12N 15/867 - Retroviral vectors
• A61K 35/28 - Bone marrowHaematopoietic stem cellsMesenchymal stem cells of any origin, e.g. adipose-derived stem cells
• A61K 35/51 - Umbilical cordUmbilical cord bloodUmbilical stem cells
• A61P 25/16 - Anti-Parkinson drugs

Abstract

The present disclosure provides a preparation method of nano-aluminum oxide (nano-Al2O3) with a controllable hydroxyl content, belonging to the technical field of nano-alumina. H2O2 dissolved in water dissociates a large number of hydroxyl radicals. In the present disclosure, a resulting H2O2 solution is used as a solvent for precipitation; during the precipitation, a soluble aluminum salt and a pore-enlarging agent are reacted to generate a precipitate under alkaline conditions, and the hydroxyl radicals are distributed on a surface of the precipitate. During drying, the hydroxyl radicals are converted into bound water and distributed on a surface and in pores of an aluminum hydroxide precursor; during roasting, the bound water is destroyed to form hydroxyl. The hydroxyl content of the nano-Al2O3 can be regulated by controlling a concentration of the H2O2 solution, and the nano-Al2O3 has the hydroxyl content positively correlated with the concentration of the H2O2 solution.

IPC Classes  ?

• C01F 7/34 - Preparation of aluminium hydroxide by precipitation from solutions containing aluminium salts

Abstract

Disclosed are a sesquiterpene derivative and the use thereof in the preparation of a broad-spectrum antiviral drug. The sesquiterpene derivative has the functions of being an agonist of heterogeneous nuclear ribonucleoprotein A2/B1, activating a TANK binding kinase 1-interferon regulatory factor 3 cell signaling pathway, increasing the secretion of endogenous type I interferon and inhibiting a variety of viruses, and can be used as a broad-spectrum antiviral drug to prevent or treat a variety of viral infectious diseases and conditions, including SARS-CoV-2, vesicular stomatitis virus VSV-G, HIV, hepatitis C virus, encephalitis b virus, influenza virus, poliovirus, coxsackie virus, Dengue virus, rotavirus, tobacco mosaic virus, measles virus, mumps virus, Ebola virus, Marburg virus, herpes virus and adenovirus. The sesquiterpene derivative can be prepared into oral dosage forms such as tablets, capsules and dripping pills or clinically acceptable pharmaceutical preparations such as inhalants and injections.

IPC Classes  ?

• C07D 493/10 - Spiro-condensed systems
• A61K 31/35 - Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom
• A61P 31/20 - Antivirals for DNA viruses
• A61P 31/16 - Antivirals for RNA viruses for influenza or rhinoviruses
• A61P 31/14 - Antivirals for RNA viruses
• A61P 31/22 - Antivirals for DNA viruses for herpes viruses

Abstract

A method includes the following steps: a first step: the material containing heteroatom and graphite powder are mixed for a preset time by grinding, and the molar ratio of heteroatom to carbon atom is 1%-10%, then the heteroatom precursors are obtained; a second contact step: the heteroatom precursor is filled into a graphite rod with holes and compacted, then the graphite rod is dried for a preset time to obtain a plasma anode and using a DC arc plasma device to prepare the graphite anode into heteroatom-doped CNHs; a third contact step: the heteroatom-doped CNHs are dispersed in a reducing solution, a platinum salt is added to stir evenly, the reduction reaction is carried out by heating and stirring, and after centrifugation, washing and drying, a catalyst with platinum loading is obtained.

IPC Classes  ?

• C01B 32/18 - NanoonionsNanoscrollsNanohornsNanoconesNanowalls
• B01J 21/18 - Carbon
• B01J 23/42 - Platinum
• B01J 35/23 - Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state in a colloidal state
• B01J 37/08 - Heat treatment

Abstract

A vertical vacuum spiral crystallization apparatus and method for continuously separating a binary eutectic alloy. The apparatus comprises a vertical furnace body, a feeding system, a heating system, a circulating water cooling system, a rotating system, a vacuum system, a discharging system and an observation system. The vertical furnace body accelerates the countercurrent of the melt by means of gravity, which helps to improve the purity of a crystal. A processed object of the present apparatus and method is a binary alloy containing any component at an eutectic point, the apparatus is convenient to operate, three wastes will not be generated during a processing process, the operation environment is good, and the process is safe and controllable.

IPC Classes  ?

• C22B 25/08 - Refining
• C22B 21/06 - Refining
• C22B 13/10 - Separating metals from lead by crystallising, e.g. by Pattison process
• C22B 30/06 - Obtaining bismuth
• C22B 9/02 - Refining by liquating, filtering, centrifuging, distilling or supersonic wave action
• C22B 9/04 - Refining by applying a vacuum
• B01D 9/02 - Crystallisation from solutions

Abstract

1, grouting time t, a number m of grouting holes of a side surface of a grouting pipe and a grouting hole radius r; and solving a column-hemispherical permeation grouting diffusion radius R considering coupling effect both the tortuosity of rock and soil mass and the time-varying property of power-law cement grout.

IPC Classes  ?

• G01N 15/08 - Investigating permeability, pore volume, or surface area of porous materials
• G01N 33/38 - ConcreteLimeMortarGypsumBricksCeramicsGlass
• G01N 33/24 - Earth materials

Abstract

The present invention relates to the technical field of crude selenium purification, and provides an apparatus and method for purifying selenium slag in vacuum. According to the apparatus for purifying selenium slag in vacuum, by providing an inclined condensation plate and a horizontal condensation plate, the degree of separation of selenium and other impurities in crude selenium is improved, and the purity of obtained selenium is improved. In addition, the apparatus for purifying selenium slag in vacuum provided by the present invention has a simple structure. In the present invention, selenium slag to be purified is heated by a heating device to form steam; impurities in the steam are condensed by the inclined condensation plate and the horizontal condensation plate and then flow back into a material container; the purified selenium steam enters a cooling system through holes in a condenser, is condensed on a cooling cover, is converged into a flow convergence disc, and is collected in a collection system through a melt pipeline. The method provided by the present invention is simple to operate. The data of embodiments shows that according to the apparatus provided by the present invention, selenium having purity of 99.995% can be obtained from selenium slag having a mass fraction of 60%.

IPC Classes  ?

• C01B 19/02 - Elemental selenium or tellurium
• C22B 9/02 - Refining by liquating, filtering, centrifuging, distilling or supersonic wave action

Abstract

The present invention relates to the technical field of separation and purification, and provides a method for separating and purifying tin and copper from tin refining sulfur slag. According to the present invention, tin refining sulfur slag and a vulcanizing agent are mixed and then briquetted, so that the speed of decomposing the vulcanizing agent to generate sulfur vapor can be controlled, and the situation that most sulfur vapor quickly volatilizes to a furnace wall without reacting with tin in time, resulting in reduction of vulcanization efficiency and waste of sulfur, as well as environmental pollution and furnace wall corrosion caused by sulfur vapor volatilization, is avoided; moreover, by means of briquetting, the contact among particles is more sufficient, and the contact between sulfur released by decomposition of the vulcanizing agent and the tin is more complete, so that the vulcanization of the tin is more sufficient; the briquetting can also avoid material gushing caused by quick decomposition of the vulcanizing agent during reaction, so that the situation that the direct mixing of some unreacted materials with condensed products affects the tin-copper separation effect is avoided, the reaction process is more controllable, and the separation efficiency is higher. According to the method provided by the present invention, the direct recovery rate of tin is greater than 99.5%, and the direct recovery rate of copper is greater than 99%.

IPC Classes  ?

• C22B 7/04 - Working-up slag
• C22B 25/06 - Obtaining tin from scrap, especially tin scrap
• C22B 1/24 - BindingBriquetting
• C22B 25/02 - Obtaining tin by dry processes
• C22B 15/00 - Obtaining copper

Abstract

The present invention relates to the technical field of scattered metal purification, and provides a crude selenium slag purification apparatus and method. The crude selenium slag purification apparatus provided by the present invention comprises a melting and filtering furnace (1); the melting and filtering furnace (1) comprises a furnace body (11); a material receiver (12) is provided in the furnace body (11); a feeding port (15) is provided at the top of the furnace body (11); a filtering layer (13) is provided in the material receiver (12); a heating assembly (14) is provided on an outer side wall of the material receivers (12); the material receiver (12) is further provided with a discharge port (16); and the discharge port (16) penetrates through the wall of the furnace body. Impurity elements in the crude selenium slag, i.e., tellurium, copper, and lead, can be efficiently removed by using the crude selenium slag purification apparatus provided by the present invention, so as to realize continuous mass production of refined selenium; and the refined selenium has high yield and high purity. Moreover, the crude selenium slag purification method provided by the present invention is simple in process, low in cost, and energy-saving.

IPC Classes  ?

• C01B 19/02 - Elemental selenium or tellurium
• B01D 35/28 - Strainers not provided for elsewhere

Abstract

22222222322 in the enriched rutile product.

IPC Classes  ?

• C01G 23/047 - Titanium dioxide

Abstract

Disclosed is a device for continuous treatment of materials containing volatile components, which belongs to the field of pyrometallurgical equipment. The device includes a feeding unit, a heating unit, a slag raking unit and a slag collecting unit. The feeding unit is configured to feed the materials with a push rod or in a spiral mode. The heating unit is provided with a square furnace body, and a first slag raking port is provided in the lower part of the furnace body. The slag collecting unit is provided with a slag discharging port at the lower portion thereof, is provided with a slag smashing port at the sidewall thereof, and is provided with a viewing port at the top thereof. The slag collecting unit and the heating unit are connected through a pipeline, thus achieving the pressure balance of the whole device during operation.

IPC Classes  ?

• B22D 43/00 - Mechanical cleaning, e.g. skimming of molten metals

Abstract

A method and device for calculating an optimal leveling stiffness of pile top displacement regulators in a composite foundation are disclosed. The method includes: determining basic parameters for calculating the optimal leveling stiffness of the pile top displacement regulators in the composite foundation; building an optimal mathematical model for calculating the optimal leveling stiffness of the pile top displacement regulators in the composite foundation, and solving the optimal mathematical model for calculating the optimal leveling stiffness of the pile top displacement regulators in the composite foundation to obtain the optimal leveling stiffness. The method and device maximize the bearing capacity of the composite foundation by taking an optimal value of the leveling stiffness of the pile top displacement regulators. The method and device realize accurate quantitative analysis for composite foundation design by adjusting the value of the leveling stiffness of the pile top displacement regulators.

IPC Classes  ?

• G06F 30/20 - Design optimisation, verification or simulation
• G06F 111/10 - Numerical modelling

Abstract

A method includes the following steps: a first step: the material containing heteroatom and graphite powder are mixed for a preset time by grinding, and the molar ratio of heteroatom to carbon atom is 1%-10%, then the heteroatom precursors are obtained; a second contact step: the heteroatom precursor is filled into a graphite rod with holes and compacted, then the graphite rod is dried for a preset time to obtain a plasma anode and using a DC arc plasma device to prepare the graphite anode into heteroatom-doped CNHs; a third contact step: the heteroatom-doped CNHs are dispersed in a reducing solution, a platinum salt is added to stir evenly, the reduction reaction is carried out by heating and stirring, and after centrifugation, washing and drying, a catalyst with platinum loading is obtained.

IPC Classes  ?

• C01B 32/18 - NanoonionsNanoscrollsNanohornsNanoconesNanowalls
• B01J 21/18 - Carbon
• B01J 37/08 - Heat treatment
• B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
• B01J 23/42 - Platinum

Abstract

The disclosure discloses a method and an apparatus for determining code generation quality and efficiency evaluation values based on multiple indicators. The method includes that: an object code is acquired; an interactive data set is acquired; a multidimensional evaluation indicators is determined and characteristic values corresponding to each piece of data in the interactive data set are extracted; characteristic values corresponding to each piece of data in the interactive data set are determined as a characteristic data set; a multidimensional syntax tree is constructed; feature learning is performed on the multidimensional syntax tree to obtain feature parameters; the evaluation parameter model is controlled to output an evaluation value. According to the disclosure, the evaluation method in a related art is to evaluate a static automatic code generation result, ignoring the influence of code changes on the evaluation result, resulting in low reliability of the evaluation result is solved.

IPC Classes  ?

• G06F 8/30 - Creation or generation of source code
• G06F 8/41 - Compilation
• G06F 18/22 - Matching criteria, e.g. proximity measures
• G06F 40/14 - Tree-structured documents

Abstract

The present application provides an unmanned aerial vehicle (UAV) surface coating, a preparation method therefor, and a UAV. The coating at least comprises: an adhesive layer, an anti-oxidation layer, an oxygen barrier transmission layer, and a heat insulation and cooling layer. The coating is fabricated on the surface of a UAV body or covered on the surface of the UAV body by means of a composite material matrix. The UAV body is made of a lightweight material. The composite material matrix comprises a resin-based composite material matrix and a ceramic-based composite material matrix. The thickness of the adhesive layer is 20-200 μm, the thickness of the oxygen barrier transmission layer is 20-100 μm, and the thickness of the heat insulation and cooling layer is 80-1000 μm. In the present application, by combining the extremely low thermal conductivity, high reflectivity and strong oxygen barrier transmission of each layer of material in the coating, the UAV body has oxidation resistance, the working temperature of the UAV is improved, and it is ensured that the UAV may be used in fire rescue and may be used for long-term service.

IPC Classes  ?

• C23C 4/11 - Oxides
• C23C 4/134 - Plasma spraying
• C23C 8/12 - Oxidising using elemental oxygen or ozone
• C23C 14/20 - Metallic material, boron or silicon on organic substrates
• C23C 14/30 - Vacuum evaporation by wave energy or particle radiation by electron bombardment
• C23C 14/16 - Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
• C23C 14/18 - Metallic material, boron or silicon on other inorganic substrates
• C23C 14/58 - After-treatment
• C23C 28/00 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and
• B64C 1/00 - FuselagesConstructional features common to fuselages, wings, stabilising surfaces or the like
• A62C 3/02 - Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires
• A62C 31/12 - Nozzles specially adapted for fire-extinguishing for delivering foam or atomized foam
• A62C 31/28 - Accessories for delivery devices, e.g. supports
• A62C 5/02 - Making of fire-extinguishing materials immediately before use of foam
• A62C 37/00 - Control of fire-fighting equipment
• B64D 1/18 - Dropping or releasing powdered, liquid or gaseous matter, e.g. for fire-fighting by spraying, e.g. insecticides
• C04B 41/89 - Coating or impregnating for obtaining at least two superposed coatings having different compositions
• C23C 24/04 - Impact or kinetic deposition of particles

Abstract

Provided is a recovery method for valuable metal in copper anode mud, which belongs to the technical field of comprehensive treatment of copper anode mud. In the recovery method of the present invention, selenium, copper, tellurium, arsenic, lead, bismuth, and precious metals gold and silver, in copper anode mud are efficiently recovered, using a two-step vacuum carbothermal reduction method to replace anode mud reduction smelting and precious lead step-by-step blowing in a conventional firing method, and prevent emission of arsenic-containing soot in a conventional process. Gold-rich residue recovered by the present invention is almost free of base metals such as lead, bismuth, antimony and arsenic, gold powder can be obtained after chlorinating gold separation and reduction; compared with a conventional process, the base metal content is lower, an amount of output slag and a production period are greatly reduced, and the loss of precious metal in slag is reduced. The complete recovery method of the present invention shortens a recovery period for precious metals, and improves a direct yield of valuable metal; the vacuum carbon thermal reduction process is a closed system, and smoke emission is avoided through the whole process, solving the problem of arsenic recovery and emission while improving a working environment. The process is simple, and environmentally friendly.

IPC Classes  ?

• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
• C22B 1/06 - Sulfating roasting
• C22B 9/02 - Refining by liquating, filtering, centrifuging, distilling or supersonic wave action
• C22B 13/02 - Obtaining lead by dry processes
• C22B 15/00 - Obtaining copper
• C22B 30/04 - Obtaining arsenic
• C22B 30/06 - Obtaining bismuth
• C25C 1/20 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of noble metals
• C01B 19/02 - Elemental selenium or tellurium

Abstract

The present invention discloses a treatment system and treatment method for intermediate materials of tin smelting. The treatment system comprises: a fuming furnace, a settling electric furnace, a lean-slag water quenching pool, a matte bag, a pulverized coal injection system, a flue gas treatment system and a secondary air supply system, wherein the fuming furnace is separately connected to the settling electric furnace, the pulverized coal injection system, the flue gas treatment system and the secondary air supply system; and the settling electric furnace is further separately connected to the lean-slag water quenching pool and the matte bag. By means of the treatment system and method disclosed in the present invention, tin and other materials can be efficiently classified, separated and recycled, the problems of difficulties in selling and transporting complex tin-containing smelting intermediate materials and economic losses due to discount sale are solved, and hazardous waste is converted into value-added valuable materials for comprehensive recovery.

IPC Classes  ?

• C22B 25/06 - Obtaining tin from scrap, especially tin scrap
• C22B 7/04 - Working-up slag

Abstract

A system for treating tin smelting intermediate materials and method for treating the materials is disclosed. The system includes a fuming furnace, an electric settling furnace, a lean slag water quenching pool, a matte ladle, a pulverized coal injection system, a flue gas treatment system and a secondary air supply system; the fuming furnace is connected with the electric settling furnace, the pulverized coal injection system, the flue gas treatment system and the secondary air supply system respectively; the electric settling furnace is also connected with the slag-lean water quenching pool and the matte ladle respectively. The system and method disclosed by the disclosure can efficiently classify, separate and recover tin from other materials, solve the problems of difficult sales and transportation of complex tin-containing smelting intermediate materials and economic loss of discounted sales, and transform hazardous wastes into value-added valuable materials for comprehensive recovery.

IPC Classes  ?

• C22B 7/04 - Working-up slag
• C22B 25/06 - Obtaining tin from scrap, especially tin scrap
• F27D 17/00 - Arrangements for using waste heatArrangements for using, or disposing of, waste gases
• C22B 7/02 - Working-up flue dust
• F27D 7/06 - Forming or maintaining special atmospheres or vacuum within heating chambers