Abstract

A method analyzes global average grayscale change of tundish ink tracing experiment. The method includes the following steps: building a water model based on a prototype size and production parameters of a tundish; carrying out experiments by using the water model to obtain a video file of the ink tracing; processing the video file and extracting a characteristic curve of a global average grayscale changing with the time; analyzing the characteristic curve, and extracting a global peak grayscale time, a global tracer residual volume and a global emptying time as indicators for evaluating a tundish structure and flow characteristics of the tundish structure.

IPC Classes  ?

• G06T 7/246 - Analysis of motion using feature-based methods, e.g. the tracking of corners or segments
• G01N 11/02 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties by measuring flow of the material
• G06T 7/62 - Analysis of geometric attributes of area, perimeter, diameter or volume
• G06T 7/64 - Analysis of geometric attributes of convexity or concavity
• G06T 7/90 - Determination of colour characteristics

Abstract

An FH40-HD50 high-ductility ship plate steel having a multiphase structure, and a preparation method therefor, belonging to the field of ship plate steel manufacturing. The chemical composition of the ship plate steel is as follows: C, Mn, Si, Ni, Nb, Alt, S, and P, the rest being Fe and unavoidable impurity elements; the FH40-HD50 high-ductility ship plate steel has a composition design with low-C-and-Nb microalloying as a core, and does not contain metal elements such as Cu, V, and Ti. The preparation method mainly comprises procedures such as smelting, continuous casting, hot rolling, and cooling; on-line optimization of a TMCP process involving three stages of cooling, i.e. "relaxation + ultrafast cooling + air cooling", enables control of a ferrite + pearlite + bainite multiphase structure, produces FH40-HD50 high-ductility ship plate steel having far higher plasticity and toughness than traditional high-strength ship plate steel, and improves the collision resistance of large ships without changing the structural design of the ships.

IPC Classes  ?

• C22C 38/12 - Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium or niobium

Abstract

A multi-source solid waste recycling method based on composition design for calcium-silicon-aluminum-magnesium oxide includes collecting multi-source solid waste composition data; calculating and designing compositions of calcium oxide, silicon oxide, aluminum oxide and magnesium oxide units to obtain an inorganic non-metallic raw material with a target composition; and melts the raw material into slag, and uses carbon, metallic aluminum, aluminum nitride, aluminum carbide, silicon nitride and silicon carbide in the multi-source solid waste as reducing agents. The slag provides a high-temperature homogeneous reaction environment and serves as a “solvent” for reactants, the reducing agents reduce valuable metals in the slag to obtain an alloy, thereby achieving recovery of the valuable metals, and the slag is used for the inorganic non-metallic material in a high-value mode.

IPC Classes  ?

• C22C 1/02 - Making non-ferrous alloys by melting
• C22B 5/10 - Dry processes by solid carbonaceous reducing agents

Abstract

33.

IPC Classes  ?

• B01J 23/34 - Manganese
• B01J 29/00 - Catalysts comprising molecular sieves
• B01J 35/02 - Solids
• B01J 29/48 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11 containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
• B01J 23/889 - Manganese, technetium or rhenium
• B01D 53/86 - Catalytic processes
• B01D 53/66 - Ozone

Abstract

The present disclosure provides an intelligent decision reasoning method for type-based diagnosis and treatment of a cardiovascular disease, a device, and a product, and relates to the medical field. The present disclosure adopts a risk factor mining model of a cardiovascular disease and a drug attribute association mining model of the cardiovascular disease to extract relevant information from cardiovascular data, achieving precise prediction of a fine-grained cardiovascular disease type and effectively promoting precision medicine. Based on a clinical diagnostic dataset and a clinical symptom diagnosis knowledge system of the cardiovascular disease, a type-based auxiliary diagnosis model of the cardiovascular disease is constructed, and intelligent decision reasoning is performed to obtain an association rule. This achieves efficient integration of type-based decision support of the cardiovascular disease and a medical convalescence knowledge base of the cardiovascular disease, and enhances quality of a cardiovascular medical convalescence association rule set.

IPC Classes  ?

• G16H 50/20 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for computer-aided diagnosis, e.g. based on medical expert systems
• G16H 10/60 - ICT specially adapted for the handling or processing of patient-related medical or healthcare data for patient-specific data, e.g. for electronic patient records
• G16H 20/10 - ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance relating to drugs or medications, e.g. for ensuring correct administration to patients
• G16H 50/70 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for mining of medical data, e.g. analysing previous cases of other patients
• G16H 70/40 - ICT specially adapted for the handling or processing of medical references relating to drugs, e.g. their side effects or intended usage

Abstract

x are improved by adjusting a content of Ce.

IPC Classes  ?

• C22C 30/00 - Alloys containing less than 50% by weight of each constituent
• A01N 59/16 - Heavy metalsCompounds thereof
• A01P 1/00 - DisinfectantsAntimicrobial compounds or mixtures thereof
• C22C 1/02 - Making non-ferrous alloys by melting

Abstract

A method for predicting floating times of inclusions during refinements of molten steel includes: predicting a macroscopic multiphase flow field of the molten steel refining, injecting the inclusions into the multiphase flow field uniformly and randomly, determining a capture condition of the inclusions, calculating motion trajectories of the inclusions injected into the multiphase flow field, outputting captured inclusions' information through comparing the motion trajectory of the inclusion and the capture condition, and obtaining an average floating time, a relationship between a removal rate and the floating time, and the complete floating time through analyzing the captured inclusions' information. This method not only considers physical properties and sizes of the inclusions themselves but is also closely related to the refining process and the flow field in the refinement, and the results can provide theoretical basis for quantitative evaluation and optimization of the refining process and its parameters.

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 111/10 - Numerical modelling
• G06F 113/08 - Fluids

Abstract

This invention pertains to corrosion inhibition, specifically involving a Platanus acerifolia leaf extract inhibitor. The extract serves to inhibit corrosion of copper in sulfuric acid or steel in hydrochloric acid. In sulfuric acid, inhibition efficiency reaches 96.7%, while in hydrochloric acid, it achieves 93.1% efficiency on Q235 steel. This Platanus acerifolia leaf extract inhibitor exhibits robust corrosion inhibition on copper in sulfuric acid and steel in hydrochloric acid, offering comprehensive anti-corrosion performance suitable for various materials.

IPC Classes  ?

• C23F 11/173 - Macromolecular compounds
• C23F 11/12 - Oxygen-containing compounds

Abstract

Disclosed is a method for preparing a directionally solidified TiAl alloy, including: (1) melting and casting a master alloy to obtain a TiAl alloy ingot; (2) processing the TiAl alloy ingot into a sample rod, and placing the sample rod into a refractory metal crucible and then assembling the refractory metal crucible to a directional solidification furnace; (3) vacuumizing the directional solidification furnace, and heating the directional solidification furnace to gradually raise a temperature to exceed a melting point of the sample rod, and conducting heat preservation to melt the sample rod uniformly to obtain a molten TiAl alloy; and (4) directionally pulling the molten TiAl alloy after the heat preservation to allow directional growth to a growth length, stopping the directionally pulling, and taking out an obtained sample to obtain a test rod of the directionally solidified TiAl.

IPC Classes  ?

• C30B 29/52 - Alloys
• C30B 15/10 - Crucibles or containers for supporting the melt
• C30B 15/14 - Heating of the melt or the crystallised materials
• C30B 15/20 - Controlling or regulating
• C30B 29/66 - Crystals of complex geometrical shape, e.g. tubes, cylinders

Abstract

The application provides a method for controlling nitrogen in steelmaking by spraying hydrogen containing plasma, including: using a mixture of hydrogen rich gas and argon gas to generate hydrogen plasma for denitrification of molten steel during at least one of arc furnace smelting, ladle refining, VOD refining, and RH refining. The method for controlling nitrogen in steelmaking by spraying hydrogen containing plasma provided in the application can effectively remove nitrogen from the molten steel by spraying a mixture of argon gas and hydrogen rich gas into the molten steel through a hollow electrode and plasma torch, reducing electrode consumption and electricity consumption per ton steel, and also reducing arc radiation heat loss, improving heating rate, thereby shortening smelting time and reducing production costs.

IPC Classes  ?

• C21C 7/072 - Treatment with gases
• C21C 5/52 - Manufacture of steel in electric furnaces
• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups
• C21C 7/06 - Deoxidising, e.g. killing
• C21C 7/064 - DephosphorisingDesulfurising
• C21C 7/10 - Handling in vacuum

Abstract

Disclosed are an integrated method and an integrated system for resource recovery of source-separated urine. The integrated method for resource recovery of the source-separated urine includes: mixing the source-separated urine with an alkali metal peroxysulphate to obtain a mixture, and subjecting the mixture to evaporation-concentration by heating to obtain condensed water and a liquid compound fertilizer, where the liquid compound fertilizer includes urea, a phosphorus salt, and a potassium salt.

IPC Classes  ?

• C05F 3/00 - Fertilisers from human or animal excrements, e.g. manure
• C05F 17/60 - Heating or cooling during the treatment

Abstract

The present invention belongs to the technical field of wastewater treatment, and specifically relates to a source-separated-urine integrated resource recovery method and system. The source-separated-urine integrated resource recovery method provided by the present invention comprises: mixing source-separated urine with a persulfate alkali metal salt, heating for evaporation and concentration, and obtaining condensate water and a composite liquid fertilizer; the composite liquid fertilizer containing urea, phosphorus salt, and potassium salt. The present invention uses a persulfate alkali metal salt as an additional treatment agent for source-separated urine, thereby achieving treatment integrating urine stabilization, detoxification and resource utilization; moreover, the recovery process is short, and the method is simple and suitable for industrial application. Results in the embodiments show that the method provided by the present invention achieves a composite liquid fertilizer having 99.99% or higher efficiency of inactivating pathogenic microorganisms, an antibiotic removal rate of 99% or above, and a water recovery rate of 95% or above.

IPC Classes  ?

• C02F 1/72 - Treatment of water, waste water, or sewage by oxidation
• C02F 1/50 - Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
• C02F 1/04 - Treatment of water, waste water, or sewage by heating by distillation or evaporation
• C05G 1/00 - Mixtures of fertilisers covered individually by different subclasses of class
• C05G 5/20 - Liquid fertilisers
• C05G 3/40 - Mixtures of one or more fertilisers with additives not having a specifically fertilising activity for affecting fertiliser dosage or release rateMixtures of one or more fertilisers with additives not having a specifically fertilising activity for affecting solubility
• C05G 3/90 - Mixtures of one or more fertilisers with additives not having a specifically fertilising activity for affecting the nitrification of ammonium compounds or urea in the soil

Abstract

A method for controlling a temperature of a molten steel during ladle furnace (LF) refining based on interpretable machine learning includes: acquiring process data of the LF refining and a target temperature of the molten steel during the LF refining; acquiring a prediction model for the temperature of the molten steel during the LF refining; calculating a base value for prediction of the temperature of the molten steel, SHapley Additive explanations (SHAP) values of key factor parameters, and a relationship trend between the key factor parameters and the SHAP values; and calculating a predicted value of the temperature of the molten steel during the LF refining, and acquiring a control result for the temperature of the molten steel during the LF refining according to the relationship trend and the predicted value of the temperature of the molten steel during the LF refining.

IPC Classes  ?

• C21C 5/30 - Regulating or controlling the blowing
• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups

Abstract

The present invention relates to a low-temperature working medium pair and the use thereof. The low-temperature working medium pair comprises an absorbent and a refrigerant; the absorbent is used for absorbing the refrigerant and releasing heat; the refrigerant is used for absorbing heat and evaporating; the absorbent comprises an organic absorbent, an ionic liquid absorbent, or a composite absorbent; and the refrigerant is HFO-1233zd(Z) or a composite refrigerant comprising said component. The low-temperature working medium pair is used for a waste heat utilization system for fuel cells.

IPC Classes  ?

• F25B 15/02 - Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
• F25B 27/02 - Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
• H01M 8/04007 - Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
• C09K 5/04 - Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice-versa
• F25B 30/04 - Heat pumps of the sorption type
• F25B 1/00 - Compression machines, plants or systems with non-reversible cycle
• F25B 9/00 - Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point

Abstract

A thin metal strip continuous casting method using momentum flow distribution, comprising the steps of: adjusting the position of a flow distribution device (2), and starting a double-roller thin strip continuous casting apparatus; molten metal (3) forming a uniform sheet-shaped molten metal flow (4) having an initial momentum after the molten metal (3) passes through the flow distribution device; the sheet-shaped molten metal flow entering a molten pool (5) at a superheat degree of 50-100° C. and an initial velocity of 0.5-2 m/s, wherein the flow distribution device is spaced apart from the molten pool; under the action of the initial velocity of the molten metal and in the molten pool, forming a whirlpool, which is adjacent to surfaces of two cooling rollers and has a momentum stirring action; and completing the solidification of the molten metal under the momentum stirring action of the whirlpool along with the rotation of the two cooling rollers. In the method, a whirlpool, which is adjacent to surfaces of cooling rollers and has a momentum stirring action, is formed in a molten pool by means of the kinetic energy of molten metal, such that equiaxed crystals can be prepared when a superheat degree is as high as 50-100° C., and the proportion of equiaxed crystals can be increased to 100%, thereby refining crystal grains and alleviating segregation.

IPC Classes  ?

• B22D 11/103 - Distributing the molten metal, e.g. using runners, floats, distributors
• B22D 11/06 - Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars

Abstract

Disclosed in the present invention is a method applied to a promotion mode of heavy metal pollution prevention and control technology integration for a copper dressing-metallurgy slag field and an affected area. The method comprises: classification of heavy metal pollution sources and environmental pollution safety risks of a dressing-metallurgy slag field and an affected area, treatment technology screening, comprehensive prevention and control technology integration, and mode construction. According to the present invention, field investigation and heavy metal pollution index monitoring are carried out on the surrounding environmental pollution condition of the Southwest nonferrous metal dressing-metallurgy slag field source and the affected area, the environmental pollution safety risks of the dressing-metallurgy slag field and the affected area are classified, and technical screening is carried out on different heavy metal pollution feature areas, so that the heavy metal pollution in the dressing-metallurgy slag field and the affected area is effectively treated, and the integrated dressing-metallurgy slag field and affected area heavy metal pollution prevention and control technology is constructed, and is verified and promoted by means of technical demonstration of a typical copper dressing-metallurgy slag field and affected area.

IPC Classes  ?

• G06Q 10/0639 - Performance analysis of employeesPerformance analysis of enterprise or organisation operations

Abstract

Disclosed in the present invention is a method for heavy metal pollution prevention technique integration applied to a historical lead-zinc smelting slag field and an affected area. The method comprises: heavy-metal environmental pollution safety risk grading for a smelting slag field and an affected area, treatment technique screening, and comprehensive prevention technique integration. In the present invention, field survey and heavy-metal pollution index monitoring are performed on pollution situations of the surroundings of a southwest lead-zinc smelting slag field source and an affected area, classification is performed on the smelting slag field and the affected area, techniques are screened regarding different heavy-metal pollution characteristic areas, and a verification experiment is performed, such that heavy-metal pollution of the smelting slag field and the affected area is effectively treated, an integrated heavy-metal pollution prevention technique for the smelting slag field and the affected area is constructed, and verification and popularization are performed by means of the technical demonstration of a typical lead-zinc smelting slag field and affected area.

IPC Classes  ?

• G06Q 50/26 - Government or public services
• G06Q 10/0639 - Performance analysis of employeesPerformance analysis of enterprise or organisation operations
• G06Q 10/0635 - Risk analysis of enterprise or organisation activities

Abstract

A machine learning-based multi-objective optimization method for a route for synthesis of MOFs. The method comprises: collecting a synthesis condition for preparing Ce-UiO-66, evaluating defect content and thermal stability by means of a thermogravimetric analysis curve, and using same as an initial data set; randomly dividing the data set into a training set and a testing set, respectively modeling each performance of the Ce-UiO-66 using eight algorithms, and screening representative models used for for prediction of each performance; calculating an objective achievement probability (PA) value of each performance in a synthesis space, and expanding same to a multi-objective evaluation factor; preparing a Ce-UiO-66 material; performing a characterization test on the obtained material, and if test data does not satisfy a requirement, updating the data set and the proxy model. Being based on reliable experimental data and machine learning has the advantages of low cost, short period, and the like for optimization of catalysis and stability of MOFs, and the method can be expanded to the design of synthesis routes for other materials.

IPC Classes  ?

• G16C 60/00 - Computational materials science, i.e. ICT specially adapted for investigating the physical or chemical properties of materials or phenomena associated with their design, synthesis, processing, characterisation or utilisation
• G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
• G16C 20/70 - Machine learning, data mining or chemometrics
• G06F 111/06 - Multi-objective optimisation, e.g. Pareto optimisation using simulated annealing [SA], ant colony algorithms or genetic algorithms [GA]

Abstract

Solid-liquid separation equipment includes a pulverizing and drying device. The pulverizing and drying device includes a pulverizing device and a drying device connected with one another. The pulverizing device has a pulverizing shell, an inlet, a main shaft and impellers, and the main shaft and the impellers are arranged in the pulverizing shell. The impellers are configured to rotate around the main shaft. The inlet forms a sidewall of the pulverizing shell and is intersected with the main shaft or an extension line of the main shaft. A gap is defined between an outer peripheral end of the impeller and the wall of the pulverizing shell. The sludge is efficiently and deeply dried in a condition with no phase change. The sludge is graded, pulverized and dried. During the pulverizing and drying process, the water is liquefied and centrifugally separated, and the water is not completely phase-transformed and removed.

IPC Classes  ?

• B02C 23/16 - Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
• B02C 18/16 - Disintegrating by knives or other cutting or tearing members which chop material into fragmentsMincing machines or similar apparatus using worms or the like with rotating knives Details

Abstract

The present invention discloses a multi-mode air supply terminal and method for guaranteeing health and comfort of a person, and relates to the technical field of indoor ventilation. The multi-mode air supply terminal includes: a shell body (2) as well as a pore-plate air supply mechanism and an air-curtain air supply mechanism which are installed inside the shell body; the shell body is connected with one end of an air supply branch pipe), the air-curtain air supply mechanism is arranged around the pore-plate air supply mechanism, and an inner wall of the shell body (2) forms an empty cavity (6) with the pore-plate air supply mechanism and the air-curtain air supply mechanism; and the pore-plate air supply mechanism and the air-curtain air supply mechanism are respectively used for controlling opening/closing of a pore-plate air supply port and an air-curtain air supply port to form a plurality of air supply modes.

IPC Classes  ?

• F24F 9/00 - Use of air currents for screening, e.g. air curtains
• F24F 11/00 - Control or safety arrangements
• F24F 11/65 - Electronic processing for selecting an operating mode
• F24F 11/79 - Control systems characterised by their outputsConstructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
• F24F 11/80 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air
• F24F 13/075 - Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser having parallel rods or lamellae directing the outflow, e.g. the rods or lamellae being individually adjustable
• F24F 120/12 - Position of occupants

Abstract

The present application discloses a refractory material with the function of cleaning molten steel, a preparation method therefor and the use thereof. The material phase of the refractory material of the present application comprises one or more of CA6, CMA, corundum and ZrO2. The refractory material prepared by the present application has a high purity, good erosion resistance, good slag permeability resistance and high thermal shock stability, reduces the amount of refractory material eroded into molten steel, reduces the pollution of the molten steel, and can also give full play to the performance advantages of high-purity raw materials.

IPC Classes  ?

• B22D 41/02 - Linings
• C04B 35/119 - Composites with zirconium oxide
• C04B 35/645 - Pressure sintering

Abstract

An intervention-based shared control method and apparatus in forward collision avoidance scenario of autonomous vehicle includes: acquiring vehicle state data of the autonomous vehicle and inputting the vehicle state data into a constructed forward collision avoidance control model to obtain an optimal nominal collision avoidance trajectory of the autonomous vehicle; and acquiring steering input data of a driver in controlling the autonomous vehicle, and obtaining the shared control method in the forward collision avoidance scenario of the autonomous vehicle. The present disclosure proposes a vehicle model decoupling method for control solution and risk prediction in a high-velocity forward collision avoidance scenario.

IPC Classes  ?

• B60W 30/095 - Predicting travel path or likelihood of collision
• B60W 60/00 - Drive control systems specially adapted for autonomous road vehicles

Abstract

A wind power generation quantile prediction method based on machine mental model and self-attention includes: using human cognitive decision-making mechanism for reference to construct the machine mental model as the basic framework of WQPMMSA, and then the seasonal power generation rules and intraday power generation trend are encoded into WQPMMSA as the input information of the prediction method, using the self-attention layer to replace the recurrent neural network in the original machine mental model, and establishing the statistical relationship between the seasonal power generation rules and the intraday power generation trend effectively, reducing the long-range forgetting of the original machine mental model-convert the continuous rank probability score in the integral form into a summation form, and using it as a loss function to train WQPMMSA, so that WQPMMSA approaches the optimal quantile prediction result with the highest efficiency. Therefore, accurate quantile prediction of wind power generation is realized.

IPC Classes  ?

• G06N 3/042 - Knowledge-based neural networksLogical representations of neural networks
• G06N 3/084 - Backpropagation, e.g. using gradient descent

Abstract

The present invention belongs to the technical field of refractory materials, and disclosed are a high-purity compact calcium hexa-aluminate-based refractory material, a preparation method therefor, and a working lining using the same. The mixing ratio is adjusted according to the chemical composition of the final product to contain raw materials containing CaO, Al2O3 and ZrO2, the mixing ratio enabling the ratio of the chemical composition CaO:Al2O3:ZrO2 calculated according to parts by mass to be 45.5-95.5%:2.0-8.4%:0-50%; and the chemical composition are placed into a high-temperature furnace and a mold for hot-pressing is carried out, the maximum temperature is 1550-1800° C., and the hot-pressing strength is 0.5-30 MPa. In the present invention, when no sintering agent is added, a hot-pressing sintering process is employed according to a proportion to obtain a high-purity compact calcium hexa-aluminate-based refractory material, and the refractory material has excellent resistance to molten steel erosion and thermal shock stability, and can be widely applied in metallurgy, building materials and petrochemical industries as well as other industries. The preparation method is scientific and reasonable, product purity is high, and the prepared refractory material product can increase a device operation period; in addition, production costs are reduced, and energy-saving and emission-reducing effects are achieved.

IPC Classes  ?

• C04B 35/44 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminates
• C04B 35/645 - Pressure sintering

Abstract

Disclosed in the present invention are a corrosion-resistant refractory material, preparation method therefor, and the use thereof. In the corrosion-resistant refractory material, a material phase of the refractory material comprises corundum and one or more material phases selected from CA6, C2M2A14, CM2A8, and ZrO2. The refractory material has low a low amount of a high-temperature liquid phase, a uniform pore structure, and good thermal shock stability; can be widely used in steel-making production lines and also in the refractory linings of rotary kilns, and has good erosion resistance and low thermal conductivity, and the performance thereof is obviously superior to that of many existing refractory materials such as silico carbide-mullite bricks and magnesia-alumina spinel bricks.

IPC Classes  ?

• C04B 35/119 - Composites with zirconium oxide
• B22D 41/02 - Linings
• C04B 35/645 - Pressure sintering

Abstract

Disclosed are a CA6-based thermally insulating refractory material with a medium volume density, a preparation method therefor, and the use thereof. The CA6-based thermally insulating refractory material with a medium volume density in the present invention has phases comprising CA6 and one or more selected from C2M2A14, C2M2A8, magnesium aluminate spinel, and corundum, and the refractory material has a high purity, good high temperature stability, a uniform structure, stable performance, a relatively low thermal conductivity, and good corrosion resistance to a metal, slag, etc.

IPC Classes  ?

• C04B 35/101 - Refractories from grain sized mixtures
• B22D 41/02 - Linings
• C04B 35/645 - Pressure sintering

Abstract

A converter bottom blowing system comprises a first gas source connected in parallel with a lime powder silo, a lime powder blowing tank and a first injector, where a first cut-off valve is arranged between the lime powder blowing tank and the first injector; a second gas source connected in parallel with the biochar powder silo, the biochar powder blowing tank and the second injector, where a second cut-off valve is arranged between the biochar powder blowing tank and the second injector; a converter, where a plurality of bottom blowing lances are arrayed at a bottom of a converter, the bottom blowing lances are connected with the first injector and the second injector through a three-way valve, a third cut-off valve is arranged between the first injector and the three-way valve, and a fourth cut-off valve is arranged between the second injector and the three-way valve.

IPC Classes  ?

• C21C 5/30 - Regulating or controlling the blowing
• C21C 5/46 - Details or accessories
• C21C 7/064 - DephosphorisingDesulfurising

Abstract

A 5G-TSN resource joint scheduling apparatus includes: a state information acquisition module, a scheduling decision making module, and a configuration module. The state information acquisition module is configured to acquire bottom-layer network information, and process the acquired bottom-layer network information to obtain state information, the bottom-layer network information includes channel information, gate control list information of a TSN domain, and queue information in a base station. The scheduling decision making module is configured to obtain a result of decision making based on the state information output by the state information acquisition module using a DDPG-based reinforcement learning model, the result of decision making includes whether to allocate resources for a current queue and a number of resources actually allocated to the current queue. The configuration module is configured to convert the result of decision making to one or more instructions understandable by the base station to configure the base station.

IPC Classes  ?

• H04W 72/1263 - Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 72/542 - Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
• H04W 72/543 - Allocation or scheduling criteria for wireless resources based on quality criteria based on requested quality, e.g. QoS

Abstract

A composite aerogel based on graphdiyne motif arrangement and a preparation method thereof are provided by the embodiments of the disclosure, belonging to the technical field of photothermal evaporation materials, including firstly growing graphdiyne on a surface of the graphene oxide to obtain a graphdiyne-coated graphene oxide, taking an additional graphene oxide, adding the additional graphene oxide and the graphdiyne-coated graphene oxide obtained by the coupling reaction into pure water, and ultrasonically mixing to obtain a mixed dispersion, adding a polyvinyl alcohol aqueous solution into the mixed dispersion, and transferring to a reaction kettle after ultrasonic mixing, putting the reaction kettle after sealing into a blast drying box for hydrothermal reaction to obtain a gel structure, and cleaning the gel structure, and freeze-drying to obtain a composite aerogel containing graphdiyne-coated reduced graphene oxide and reduced graphene oxide.

IPC Classes  ?

• C01B 32/194 - After-treatment
• B01D 1/00 - Evaporating
• B01J 13/00 - Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided forMaking microcapsules or microballoons
• C01B 32/198 - Graphene oxide
• C02F 1/14 - Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy

Abstract

A low-cost four-element system cementitious material, a preparation method and an application thereof are provided by the present disclosure, and the cementitious material is used in the fields of mine cementing filling and building materials. The four-element system cementitious material includes the following raw materials in percentage by mass: 20-60% of water-quenched blast furnace slag, 10-40% of waste incineration bottom ash, 20% of pretreated waste incineration fly ash and the balance of desulfurization gypsum. The low-cost four-element system cementitious material is used to replace cement to prepare mine cementing filling materials, and is also used to prepare concrete materials for construction industry.

IPC Classes  ?

• C04B 7/153 - Mixtures thereof with other inorganic cementitious materials or other activators
• C04B 7/28 - Cements from oil shales, residues or waste other than slag from combustion residues
• C04B 11/26 - Calcium sulfate cements starting from phosphogypsum or from waste, e.g. purification products of smoke
• C04B 11/30 - Mixtures thereof with other inorganic cementitious materials with hydraulic cements, e.g. Portland cements
• C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
• C04B 28/08 - Slag cements
• C04B 28/14 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
• C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability

Abstract

An additively manufactured high-strength and high-ductility stainless steel is characterized in that the composition, by weight percentage, C≤0.05 wt %, Si≤1 wt %, Mn≤1 wt %, Cr 14.5-15.5 wt %, Ni 5.0-5.5 wt %, Cu 4-4.5 wt %, Nb 0.35-0.45 wt %, and the balance of Fe and unavoidable impurities. And Cr equivalent of Creq=% Cr+% Mo+2.2% Ti+0.7% Nb+2.48% Al. Ni equivalent of Nieq=% Ni+35% C+20% N+0.25% Cu. The yield strength of the high-strength and high-ductility stainless steel ≥1270 MPa, the tensile strength ≥1380 MPa, and the elongation after fracture ≥15%.

IPC Classes  ?

• C22C 33/02 - Making ferrous alloys by powder metallurgy
• B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
• B22F 10/64 - Treatment of workpieces or articles after build-up by thermal means
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 40/20 - Post-treatment, e.g. curing, coating or polishing
• B33Y 70/00 - Materials specially adapted for additive manufacturing
• B33Y 80/00 - Products made by additive manufacturing
• C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
• C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
• C22C 38/42 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
• C22C 38/48 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum

Abstract

The present invention relates to the technical field of Al-Zn-Mg-Cu alloy materials and preparation, and disclosed are an Al-Zn-Mg-Cu alloy material for a lightweight structural member and a preparation method. The alloy material comprises the following components in percentage by mass: Zn: 6.7-8.2; Mg: 2.0-2.5; Cu: 1.8-2.6; Zr: 0.01-0.2; Fe: ≤0.3; Si: ≤0.25; Mn: ≤0.2; Cr: ≤0.2; Ti: ≤0.15; other elements: ≤0.05; and the remainder being Al. The aluminum alloy material developed by the present invention has the properties such as high strength and toughness, high corrosion resistance, fatigue resistance, low quenching sensitivity, and high conductivity, and alloy element addition and preparation modes can achieve a good synergistic effect; the present invention can be used for manufacturing plates/profiles of different sizes and specifications, and satisfies the manufacturing and application requirements of light high-strength components required for manufacturing aerospace crafts and transportation equipment.

IPC Classes  ?

• C22C 21/10 - Alloys based on aluminium with zinc as the next major constituent
• C22C 1/03 - Making non-ferrous alloys by melting using master alloys
• C21D 1/18 - HardeningQuenching with or without subsequent tempering

Abstract

Disclosed are a multimodal weakly-supervised three-dimensional (3D) object detection method and system, and a device. The method includes: shooting multiple two-dimensional (2D) red, green and blue (RGB) images with a camera, acquiring ground points by a vehicle LiDAR sensor and generating a 3D frustum based on 2D box labels on each of the 2D RGB images; filtering ground points in the 3D frustum and selecting a region with most 3D points; generating a 3D pseudo-labeling bounding box of an object according to the region with the most 3D points; training a multimodal superpixel dual-branch network with the 3D pseudo-labeling bounding boxes as labels and the 2D RGB image and the 3D point cloud as inputs; and inputting a 2D RGB image of a current frame and a 3D point cloud of a current scenario to a trained multimodal superpixel dual-branch network to generate an overall 3D point cloud.

IPC Classes  ?

• G06V 10/80 - Fusion, i.e. combining data from various sources at the sensor level, preprocessing level, feature extraction level or classification level
• G06T 5/00 - Image enhancement or restoration
• G06T 7/73 - Determining position or orientation of objects or cameras using feature-based methods
• G06V 10/77 - Processing image or video features in feature spacesArrangements for image or video recognition or understanding using pattern recognition or machine learning using data integration or data reduction, e.g. principal component analysis [PCA] or independent component analysis [ICA] or self-organising maps [SOM]Blind source separation
• G06V 10/774 - Generating sets of training patternsBootstrap methods, e.g. bagging or boosting
• G06V 20/58 - Recognition of moving objects or obstacles, e.g. vehicles or pedestriansRecognition of traffic objects, e.g. traffic signs, traffic lights or roads
• G06V 20/64 - Three-dimensional objects

Abstract

A method for evaluating energy efficiency of electric arc furnace steelmaking comprises: obtaining original smelting information of the electric arc furnace; processing the original smelting information, and calculating an electrical energy efficiency evaluation index and a chemical energy efficiency evaluation index for process operation; wherein the electrical energy efficiency evaluation index comprises circuit efficiency, transformer tap capacity utilization rate and electrical energy thermal efficiency, and the chemical energy efficiency evaluation index comprises oxygen utilization rate, carbon powder utilization rate and chemical energy thermal efficiency; and evaluating an energy utilization condition of the electric arc furnace comprehensively based on the electrical energy efficiency evaluation index and the chemical energy efficiency evaluation index. According to the method, a basis can be provided for subsequent smelting process adjustment, and the energy utilization efficiency of the electric arc furnace is improved.

IPC Classes  ?

• C21C 5/52 - Manufacture of steel in electric furnaces

Abstract

An efficient blasting method for similar cutting in a rock tunnel is provided, which relates to the technical field of rock tunneling. The method includes the following steps: drilling: drilling central holes, lower cutting holes, upper cutting holes, auxiliary holes and peripheral holes in a cross section area for tunnel construction; filling explosives: filling explosives into the central holes, the lower cutting holes, the upper cutting holes, the auxiliary holes and the peripheral holes; and blasting: blasting following blast holes in turn to complete full-face one-time blasting in a millisecond delay blasting mode. The method is applicable for construction scenes of drilling and blasting methods.

IPC Classes  ?

• F42D 1/22 - Means for holding or positioning blasting cartridges or tamping cartridges in boreholes
• E21D 9/00 - Tunnels or galleries, with or without liningsMethods or apparatus for making thereofLayout of tunnels or galleries
• F42D 3/04 - Particular applications of blasting techniques for rock blasting

Abstract

A method for numerical reconstruction and heat transfer characteristics evaluation of a microstructure of thermal barrier coatings containing microcracks includes the following steps: determining a simulation area and size settings, generating random microcracks with different morphological characteristics and placing the microcracks in the simulation area, and determining whether a space occupied by the microcracks reaches a porosity ratio of the preset microcracks, building a general pore model of thermal barrier coatings (TBCs) based on the QSGS method, reconstructing true mesoscopic morphologies of the TBCs, determining whether the preset volume fraction has been reached, and building a heat transfer analysis model based on the thermal Lattice Boltzmann method to calculate heat insulation performance parameters such as temperature distribution, and thermal conductivity. Compared with the prior art, the heat transfer analysis model can restore a mesoscopic structure of the coating more truly and effectively.

IPC Classes  ?

• G06F 30/20 - Design optimisation, verification or simulation
• G06F 111/08 - Probabilistic or stochastic CAD
• G06F 111/10 - Numerical modelling

Abstract

The present disclosure relates to a three-degree-of-freedom convenient mobile powder recovery device and a recovery method. The three-degree-of-freedom convenient mobile powder recovery device includes: a powder recovery module, a three-degree-of-freedom adjusting module and a drying and sieving module, wherein the powder recovery module is arranged on the three-degree-of-freedom adjusting module and used to recover powder; and the drying and sieving module is arranged on the three-degree-of-freedom adjusting module, connected to the powder recovery module and used to dry and sieve powder recovered by the powder recovery module. The three-degree-of-freedom convenient mobile powder recovery device has a simple structure, which is convenient to be operated. The height and position of the three-degree-of-freedom convenient mobile powder recovery device can be adjusted automatically, so that the recovery device is suitable for the setting of laser processing systems with various heights in the telescopic range.

IPC Classes  ?

• B29C 64/357 - Recycling
• B07B 1/00 - Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
• B07B 1/28 - Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting, or wobbling screens
• B22F 10/73 - Recycling of powder

Abstract

The present invention discloses a high-entropy soft magnetic alloy with 900 K high-temperature resistance, comprising Fe, Co, Ni, Si and Al, and the atomic percent of the alloy composition is expressed as FexCoyNizSimAln, wherein x=40%-80%, y=20%-60%, z=0-30%, m=0-20%, n=0-20%, and x+y+z+m+n=100%; the atomic percent of other doping elements is p=0-5%, and 0.5≤m/n≤3; the performance indexes of the material include: at room temperature, saturation magnetization Ms=90-150 emu/g, and coercive force Hc=0.1-15 Oe; and at 900 K, saturation magnetization Ms=70-130 emu/g, and coercive force Hc=0.1-25 Oe. The high-entropy soft magnetic alloy with 900 K high-temperature resistance of the present invention realizes the continuously diffuse distribution of nano-scale precipitates in the matrix structure by comprehensively regulating the microstructure configuration of the multi-principal element alloy, thus improving the soft magnetic properties of the alloy to a certain extent, and the processing route is simple and reliable, with high repeatability.

IPC Classes  ?

• H01F 1/153 - Amorphous metallic alloys, e.g. glassy metals
• C22C 1/02 - Making non-ferrous alloys by melting
• C22C 30/00 - Alloys containing less than 50% by weight of each constituent
• C22C 33/04 - Making ferrous alloys by melting
• C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
• C22C 38/06 - Ferrous alloys, e.g. steel alloys containing aluminium
• C22C 38/10 - Ferrous alloys, e.g. steel alloys containing cobalt

Abstract

The present disclosure provides a method and device for intelligent control of heating furnace combustion based on a big data cloud platform, which relates to the technical field of artificial intelligence control. The method includes: construction of big data cloud platform based on production and operation parameters of the heating furnace; identification of key factors in the production process of the heating furnace by using big data mining technology; independent deployment of traditional heating furnace combustion control systems based on the mechanism model; and integration of cloud platform big data expert knowledge base and the heating furnace combustion intelligent control system.

IPC Classes  ?

• 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

Abstract

abcdefghxx as a precursor; and then selectively removing active phases in the precursor by means of a chemical/electrochemical dealloying method to prepare the multi-principal element porous alloy. The multi-principal element porous alloy can be directly used as an electrode for electrolyzing seawater, the overpotentials of an oxygen evolution reaction (OER) and a hydrogen evolution reaction (HER) under an industrial electrolytic current density are respectively 461 mV and 178 mV, and an OER stable operation is performed for more than 1600 h under the current density. The present invention has great application prospects in the aspect of electrode devices for electrolyzing seawater for hydrogen production.

IPC Classes  ?

• C22C 30/00 - Alloys containing less than 50% by weight of each constituent
• C22C 30/02 - Alloys containing less than 50% by weight of each constituent containing copper
• C22C 1/08 - Alloys with open or closed pores
• C23F 1/02 - Local etching
• C23F 1/30 - Acidic compositions for etching other metallic material
• C25B 11/031 - Porous electrodes
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water

Abstract

The present invention discloses a full-face boring machine system for a vertical shaft, comprising: a boring cutter head apparatus used for downward tunneling in the vertical shaft, a fully hydraulic formwork apparatus used for supporting and building walls in the shaft, and an upper slag discharge system used for vertical transportation of rock slag generated during boring. The present invention eliminates difficulties in building a relay station in a shaft, and after large-scale rock slag is removed, the pipe blocking problem is effectively solved; mud circulation is changed into water circulation, so that energy consumption is greatly reduced; and the slag discharge system can achieve efficient and continuous operation, thereby laying a solid foundation for intelligent and efficient well construction.

IPC Classes  ?

• E21D 1/06 - Sinking shafts mechanically with shaft-boring cutters
• E21D 5/12 - Accessories for making shaft linings, e.g. suspended cradles, shutterings

Abstract

A device and method for preparing a low-impurity regenerated brass alloy through step-by-step insertion of an electrode are provided. The device includes a melt heating apparatus, an electrode displacement apparatus, and a pulse current generation apparatus. The automatic electrode lifting apparatus is controlled to adjust an insertion depth of the graphite electrode plate in the metal melt, and the pulse current generation apparatus is controlled to adjust the parameters of pulse current to achieve the impurity reduction on the metal melt. The preparation of a low-impurity regenerated brass alloy involves a short production process, simple operations, low energy consumption, and high impurity removal efficiency, and is suitable for regeneration and large-scale continuous production of non-ferrous metal alloys.

IPC Classes  ?

• C22C 1/02 - Making non-ferrous alloys by melting
• C25C 3/34 - Electrolytic production, recovery or refining of metals by electrolysis of melts of metals not provided for in groups

Abstract

A full-face shaft tunnel boring machine system includes a tunnel boring machine cutterhead device for tunneling downwards in a shaft; a full-hydraulic formwork device for supporting and walling in a wellbore; and an upper muck-discharge system for vertically conveying rock mucks generated by tunneling. The tunnel boring machine cutterhead device comprises a vertical guide frame, a cutter-expanded boring head and an advanced cutterhead that are fixedly connected in a vertical order from top to bottom so as to form an integrated structure. The vertical guide frame is a hollow cylindrical structure and driven to rotate around an axis of the vertical guide frame by a power mechanism, and an outer wall of the vertical guide frame is provided with multiple sets of first guide rollers.

IPC Classes  ?

• E21B 21/00 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
• E21D 1/06 - Sinking shafts mechanically with shaft-boring cutters
• E21D 5/00 - Lining shaftsLinings therefor

Abstract

The invention relates to a method and a system for determining the steel-tapping quantity of a converter, which consider that the working environment of the steel-making process of the converter is severe, the measurement is difficult and the interference of other factors is large, and provide a data-driven prediction model based on data, combine a Principal Component Analysis (PCA) with a RBF neural network, find the relation and the internal relation among variables by carrying out mathematical analysis on the related internal structure of the original variables, can quickly and accurately realize the prediction of the steel-tapping quantity of the converter, improve the component hit rate and the product stability in the steel-making process of the converter, are beneficial to realizing the control of narrow regions of steel-making components, save the alloying cost and have good application prospects in the field of ferrous metallurgy.

IPC Classes  ?

• C21C 5/30 - Regulating or controlling the blowing
• G06N 5/00 - Computing arrangements using knowledge-based models

Abstract

An efficient cut blasting method for medium-length holes in deep high-stress rock roadway is disclosed. The method may comprise steps of carrying out a crustal stress blasting test on the free face of the in-situ rock roadway to be excavated, and obtaining a distribution state of cracks under a synergistic action of crustal stress, explosion stress waves and clamping force of surrounding rock of a rock mass in the stratum where the in-situ rock roadway to be excavated is located; arranging a cutting hole net on the free face of the rock roadway to be excavated according to a distribution state of the cracks; performing cut blasting based on the cutting hole net.

IPC Classes  ?

• F42D 1/08 - Tamping methodsMethods for loading boreholes with explosivesApparatus therefor
• F42D 3/04 - Particular applications of blasting techniques for rock blasting

Abstract

A method of locating a failure of coal-rock-concrete based on vector features of a near-field electromagnetic field is provided. The method senses and records the real electromagnetic field vector information in space by arranging a triaxial electromagnetic sensor array around a coal-rock-concrete body, and realizes the localization of the failure areas of the coal-rock-concrete body by establishing an electromagnetic radiation localization model for the failures of the coal-rock concrete body. The electromagnetic radiation localization model for the failures of the coal-rock concrete body approximates the radiation source of electromagnetic radiation generated by failures as a dipole with a dipole moment, so as to realize the localization of a large number of relatively small-intensity failures during the disaster incubation stage and evolution process, realize the monitoring and early warning of the final disaster locations, and further improve the reliability of electromagnetic radiation positioning technology.

IPC Classes  ?

• G01V 3/08 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices

Abstract

Disclosed are a high strength-ductility matched oxide-particles dispersion steel, a preparation method and application thereof, belonging to the technical field of novel structural materials. The high strength-ductility matched oxide-particles dispersion steel comprises the following components in percentage by mass: chromium (Cr) 11.0-13.0 percent (%), tungsten (W) 1.0-2.0%, vanadium (V) 0.1-0.2%, yttrium (Y) 0.3-0.4%, oxygen (O) 0.05-0.15%, silicon (Si) 1.5-2.5%, carbon (C) ≤0.0016%, with iron (Fe) and unavoidable impurities accounting for a rest. The high strength-ductility matched oxide-particles dispersion steel in the present application is prepared, using a powder metallurgical preparation method, by introducing high-content of silicon elements and introducing high-density oxide particles with a complete core-shell structure using a specific heat treatment regime.

IPC Classes  ?

• C22C 33/06 - Making ferrous alloys by melting using master alloys
• C22C 33/00 - Making ferrous alloys
• C22C 38/22 - Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
• C22C 38/24 - Ferrous alloys, e.g. steel alloys containing chromium with vanadium
• C22C 38/34 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
• C22C 38/00 - Ferrous alloys, e.g. steel alloys

Abstract

The present disclosure discloses a process for evaluating a corrosion inhibitor based on a high-throughput corrosion chip. In the present disclosure, a high-throughput corrosion chip is first prepared by using a chip spotter, and only a corrosion inhibitor and a corrosive substance need to be spotted on a metal sample to quickly, efficiently, and accurately evaluate performance of a corrosion inhibitor formulation, to meet corrosion test conditions such as different substances, different concentrations, and different corrosion duration; and then a corrosion degree of each measurement point in the high-throughput corrosion chip is identified and quantified by using a laser scanning confocal microscope. The high-throughput corrosion chip prepared by using the foregoing method can bear 10-1000 measurement points, and these measurement points can reflect corrosion effects of different inhibitor formulations in different corrosion duration.

IPC Classes  ?

• G01N 17/00 - Investigating resistance of materials to the weather, to corrosion or to light

Abstract

A method and an equipment for comprehensive utilization of niobite is disclosed. The method includes the following steps: S1. adding and uniformly mixing a coal-based reducing agent to the niobite, and subsequently reducing the mixture in a reduction furnace to obtain the selective reduction product; S2. adding the selective reduction product to a super-gravity reactor where the ambient temperature is controlled to be lower than the temperature at which the niobium oxide is reduced; driven by super-gravity, reverse migrating and collecting the metal iron and the niobium-rich slag at different locations in the reactor; discharging the metallic iron tightly attached to the wall of the reactor through an iron discharging port, and discharging the niobium-rich slag enriched to the inner layer of the reactor through a slag discharging port, so that the separation of the metallic iron and the niobium-rich slag is realized in the super-gravity field.

IPC Classes  ?

• C22B 34/24 - Obtaining niobium or tantalum
• C22B 5/10 - Dry processes by solid carbonaceous reducing agents

Abstract

The invention is in the field of iron and steel metallurgy, specifically a method and system for determining the amount of alloy added during the converter tapping process. Given that the LSTM neural network has a strong ability to capture nonlinear relationships, the invention builds an alloy element yield prediction model based on the LSTM neural network. Because different alloy elements have different factors that affect their yield, that is, different model input variables, different LSTM models are established for training. Furthermore, the invention uses integer linear programming to combine the yield prediction results to determine the alloy addition amount. This method not only finds the optimal alloy proportioning scheme quickly, but it also improves the component hit rate and the stability of steel products in the converter steelmaking process, obtains the lowest total cost, effectively reduces alloying costs, and has a good application prospect.

IPC Classes  ?

• G06N 3/08 - Learning methods

Abstract

A method for reducing oxygen in a powder for 3D printing, which belongs to the field of powder metallurgy. The method comprises: firstly, screening a commercially available atomized metal powder by using a sieve, so as to remove impurities in the powder; placing the commercially available atomized metal powder obtained from screening in a jet mill apparatus for a surface treatment, so as to improve the surface morphology of the powder; and placing the atomized metal powder obtained from a jet milling treatment and a surface treatment in a high-purity argon or nitrogen atmosphere for screening, and subjecting same to vacuum sealed packaging. Satellite powders do not adhere to the surfaces of powder particles obtained from the jet milling treatment, the oxygen content is significantly reduced, and the sphericity degree of the powder reaches 90% or more, such that the performance of a 3D printed and formed part can be improved. The method is suitable for atomized powders of different material systems, including a titanium alloy, an iron-based alloy, a nickel-based high-temperature alloy, etc., and is short in terms of technological process, easy to operate, high in terms of the utilization rate of raw materials, and low in terms of cost.

IPC Classes  ?

• B22F 1/14 - Treatment of metallic powder
• B22F 9/04 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling
• B22F 10/34 - Process control of powder characteristics, e.g. density, oxidation or flowability
• B33Y 70/00 - Materials specially adapted for additive manufacturing

Abstract

The present invention provides a device and method for preparing a low-impurity regenerated brass alloy through step-by-step electrode insertion, and belongs to the technical field of metal melt purification. The device comprises a melt heating device, an electrode displacement device, and a pulse current generating device, and particularly comprises a heating source, a metal melt, a melting pool, a graphite electrode plate, a connector, a connecting rod, a rotary fixing knob, a telescopic rod, an electric motor, a sliding plate, a parallel metal sliding plate base, and a fixing base, wherein one end of the graphite electrode plate is inserted into the melt; the other end of the graphite electrode plate is connected to the connector; the connector is connected to the connecting rod; the connecting rod penetrates the telescopic rod; the telescopic rod controls an electrode to move up and down; the sliding plate and the parallel metal sliding plate base control the electrode to move to the left and right; the parallel metal sliding plate base is connected to the fixing base; and a metal wire is connected to the connector and the pulse current generating device. By employing the present invention to prepare the low-impurity regenerated brass alloy, the production flow is short, the operation is simple, the energy consumption is low, and the impurity removal efficiency is high, and therefore the present invention is suitable for regeneration and the large-scale continuous production of non-ferrous metal alloys.

IPC Classes  ?

• C22C 1/03 - Making non-ferrous alloys by melting using master alloys
• C22C 9/08 - Alloys based on copper with lead as the next major constituent
• C22C 9/00 - Alloys based on copper
• C22C 9/10 - Alloys based on copper with silicon as the next major constituent
• C22C 9/02 - Alloys based on copper with tin as the next major constituent
• F27D 11/10 - Disposition of electrodes

Abstract

The present disclosure provides a reinforcement learning-based decision optimization method of an oilfield production system, including: collecting dynamic production data of an oilfield production site to establish a data cube for reservoir production optimization; training a preset machine learning model based on the data cube to obtain a reinforcement learning-based reservoir injection-production system surrogate model configured to predict oil production according to the dynamic production data available on site; constructing an evaluation function for production optimization of a gas injection reservoir; establishing, during a process of production optimization, an enforced constraint model based on input parameters and a boundary constraint condition; and with the constraint model and the boundary constraint condition as constraints, the reservoir injection-production system surrogate model as a basis, and the evaluation function as an optimization direction, searching reservoir production optimization schemes for an optimal production scheme.

IPC Classes  ?

• E21B 43/16 - Enhanced recovery methods for obtaining hydrocarbons
• E21B 43/25 - Methods for stimulating production

Abstract

6 carbides in the GH4738 ring after heat treatment. The elongation and area reduction of the alloy ring stretched at 540° C. after heat treatment are 30% and 34% respectively, which are 25% and 36% higher than those before process optimization respectively; and that at 760° C. are 49% and 70% respectively, which are 32% and 27% higher than those before process optimization respectively. The index requirements can be fully met. This process is applicable to GH4738 rings, which have a high requirement on high-temperature plasticity after heat treatment.

IPC Classes  ?

• C22F 1/10 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
• C22F 1/02 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum

Abstract

The present disclosure relates to an incremental backup method and system for a CAD engineering data file, and the method includes: chunking historical CAD engineering data based on a sliding window approach, to determine a first data block group; calculating a first hash fingerprint value separately for each data block in the first data block group; chunking, based on the sliding window approach, CAD engineering data to be backed up, to determine a second data block group; calculating a second hash fingerprint value separately for each data block in the second data block group; and determining a backup status of the data block in the second data block group based on the first hash fingerprint value and the second hash fingerprint value. The present disclosure resolves a problem that a long time is occupied when a large-scale engineering CAD data file is saved by applying a full backup.

IPC Classes  ?

• G06F 11/14 - Error detection or correction of the data by redundancy in operation, e.g. by using different operation sequences leading to the same result
• G06F 30/10 - Geometric CAD

Abstract

Provided is a method for determining a quantity of a calcium line fed into molten steel based on a minimum Gibbs free energy principle, which relates to an calcium treatment process of molten steel refining for iron and steel metallurgy. The method includes: establishing a connection with a database to read composition information and a temperature of the molten steel in an actual production process; calculating contents of inclusions in the molten steel according to the read composition information; calculating a required quantity of calcium of the molten steel to control the inclusions in a target area under a current condition; and calculating a length of the fed calcium line according to parameter information of the calcium treatment process and the required quantity of calcium of the molten steel. With the method, a scientific and reasonable guidance is provided for the calcium treatment process in the actual production process.

IPC Classes  ?

• G06N 3/045 - Combinations of networks
• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups

Abstract

A solid-liquid separation system, comprising: a filtering cylinder (1), a filter cloth laying apparatus (3), an apparatus (2) used for bearing and moving the filtering cylinder, a squeezing apparatus (4), and a filter cloth releasing, discharging and rolling apparatus (5), wherein said apparatus (2) is located below the filtering cylinder (1) and comprises a working position A and a working position B; the filtering cylinder reciprocates between the working position A and the working position B; in the working position B, the squeezing apparatus (4) is located above the filtering cylinder (1); the filter cloth laying apparatus (3) comprises an assembly for laying filter cloth, and a material sprayer (36); in the working position A, the material sprayer (36) is located above the filtering cylinder (1); the assembly for laying filter cloth lays in a cylinder body the filter cloth (37); and the material sprayer (36) sprays from top to bottom materials to be treated onto the filter cloth (37). The positions of the apparatuses constituting the solid-liquid separation system are easy to adjust, thereby improving the laying of the materials and the filter cloth (37), and correspondingly improving the effect and efficiency of solid-liquid separation.

IPC Classes  ?

• B01D 33/76 - Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging the filter cake, e.g. chutes
• B01D 33/80 - Accessories
• B01D 33/04 - Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering
• B01D 33/60 - Handling the filter cake in the filter for purposes other than for regenerating for washing
• B01D 37/04 - Controlling the filtration
• B05B 13/02 - Means for supporting workArrangement or mounting of spray headsAdaptation or arrangement of means for feeding work

Abstract

A segmented grouting method for ramp drivage in an aquifer is provided. Concerning grouting reinforcement for a ramp in an aquifer, a grouting process is divided into four stages according to a pressure change, that is, micro-pressure filling, low-pressure diffusion, medium-pressure reinforcement, and high-pressure fracturing. In the micro-pressure filling, an initial pressure of a grouting orifice is 0, and a low-concentration single-component grout is used to fill an original fissure of the aquifer. In the low-pressure diffusion, a low-concentration bicomponent grout is used for grouting, the original fissure is expanded, and a grouting radius is increased. In the medium-pressure reinforcement, a high-concentration bicomponent grout is used for grouting, thereby reinforcing the aquifer. In the high-pressure fracturing, a high-concentration bicomponent grout is used to reinforce a new fractured fissure of the orifice caused by a high pressure and the original fissure, thereby forming a confining bed.

IPC Classes  ?

• E21B 33/13 - Methods or devices for cementing, for plugging holes, crevices or the like

Abstract

A petroleum drill-string shock absorber includes a drill collar nipple, a driving unit, an outer shell, a helical guideway, a drill bit base, a woven metal ring and a vibration-absorbing composite beam, the vibration-absorbing composite beam consists of a sheet metal and a flexible material gasket bonded by an adhesive; the drill collar nipple is connected with the helical guideway; the helical guideway is connected with the drill bit base; the driving unit rotates on the helical guideway; the outer shell is connected with the drill bit base; a metal seal ring is configured to seal a space formed between the outer shell and the drill collar nipple, a sealed space is formed among the drill collar nipple, the outer shell and the drill bit base; the woven metal ring is placed between the helical guideway and the drill bit base configured to absorb an axial impact vibration.

IPC Classes  ?

• E21B 17/07 - Telescoping joints for varying drill string lengthsShock absorbers

Abstract

Disclosed is a large-span false roof structure of a downward horizontal approach filling method, the structure comprising a cemented filling body, a prefabricated framework, and fixing anchor rods (4), wherein the prefabricated framework comprises an arc-shaped net rack (6), rectangular net racks (5), a pre-tensile stress steel bar (3), steel bar anchor rods and a metal net (7); the arc-shaped net rack (6) is arranged at the bottom of a filling false roof and is a double-layer net rack; the pre-tensile stress steel bar (3) is welded to two ends of a lower-layer steel bar at the bottom of the arc-shaped net rack (6), and the rectangular net racks (5) are arranged on two sides of the arc-shaped net rack (6); steel bar anchor rods I (1) are welded to the rectangular net racks (5), and steel bar anchor rods II (2) are welded to the arc-shaped net rack (6); and the rectangular net racks (5) are fixed to a side wall by means of the fixing anchor rods (4), the metal net (7) is arranged on back sides of the rectangular net racks (5) and an upper portion of the pre-tensile stress steel bar (3), and the arranged prefabricated framework is filled with the cemented filling body. The structure has the advantages such as being reasonable in terms of structure, high in terms of strength, and good in terms of safety, the approach size can be effectively increased on the basis that safety is guaranteed, thereby significantly improving the mining efficiency, and the structure is particularly suitable for deep mining. Further disclosed is a construction method using the structure.

IPC Classes  ?

• E21D 11/00 - Lining tunnels, galleries or other underground cavities, e.g. large underground chambersLinings thereforMaking such linings in situ, e.g. by assembling

Abstract

A method and system of robotic arm safety detection based on EtherCAT automation are provided. The method includes: issuing a control data through the protocol module to control the robotic arm to complete an automation operation process by the control system module, and receiving joint data fed back in real-time of the sensor module; acquiring a real-time data of the robotic arm by the data capture module; wherein the real-time data includes protocol data and joint data; the joint data is acquired by the data capture module through the sensor module; performing a protocol data rule matching and physical process detection by the intrusion detection module based on the real-time data, and obtaining an intrusion detection result; wherein the intrusion detection result is configured to detect whether an intrusion behavior occurs during a normal operation of the robotic arm.

IPC Classes  ?

• B25J 9/16 - Programme controls

Abstract

The present application provides a time domain resource configuration method and apparatus, an electronic device, and a storage medium. The method comprises: obtaining an error covariance of clock synchronization precision; constructing a time domain resource configuration optimization problem on the basis of the error covariance of the clock synchronization precision, a time-preserving band length, and a data packet arrival rate, wherein the time domain resource configuration optimization problem is a problem of maximizing network throughput under the condition of ensuring the clock synchronization precision; solving the time domain resource configuration optimization problem to obtain the data packet arrival rate; and determining the network throughput on the basis of the data packet arrival rate and the time-preserving band length. According to the time domain resource configuration method and apparatus, the electronic device, and the storage medium provided in the present application, the maximized network throughput is calculated on the basis of the time-preserving band length and the data packet arrival rate obtained by solving the time domain resource configuration optimization problem, and the maximized network throughput reflects the configuration of time domain resources, so that optimization of the time domain resource configuration is achieved.

IPC Classes  ?

• H04W 72/04 - Wireless resource allocation
• H04W 72/08 - Wireless resource allocation based on quality criteria
• H04W 56/00 - Synchronisation arrangements
• G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
• G06F 17/18 - Complex mathematical operations for evaluating statistical data
• G06F 111/04 - Constraint-based CAD
• G06F 111/08 - Probabilistic or stochastic CAD

Abstract

A thin metal strip continuous casting method using momentum flow distribution, comprising the steps of: adjusting the position of a flow distribution device (2), and starting a double-roller thin strip continuous casting apparatus; molten metal (3) forming a uniform sheet-shaped molten metal flow (4) having an initial momentum after the molten metal (3) passes through the flow distribution device; the sheet-shaped molten metal flow entering a molten pool (5) at a superheat degree of 50-100°C and an initial velocity of 0.5-2 m/s, wherein the flow distribution device is spaced apart from the molten pool; under the action of the initial velocity of the molten metal and in the molten pool, forming a whirlpool, which is adjacent to surfaces of two cooling rollers and has a momentum stirring action; and completing the solidification of the molten metal under the momentum stirring action of the whirlpool along with the rotation of the two cooling rollers. In the method, a whirlpool, which is adjacent to surfaces of cooling rollers and has a momentum stirring action, is formed in a molten pool by means of the kinetic energy of molten metal, such that equiaxed crystals can be prepared when a superheat degree is as high as 50-100°C, and the proportion of equiaxed crystals can be increased to 100%, thereby refining crystal grains and alleviating segregation.

IPC Classes  ?

• B22D 11/06 - Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
• B22D 11/103 - Distributing the molten metal, e.g. using runners, floats, distributors

Abstract

The present invention provides a high-strength and high-plasticity titanium matrix composite and a preparation method thereof. The preparation method includes: preparing high-oxygen hydride-dehydride titanium powder using a high-temperature rotary ball grinding treatment process, in which the prepared hydride-dehydride titanium powder has a particle size of 10-40 μm, and has an oxygen content of 0.8-1.5 wt. %; preparing high-purity ultra-fine oxygen adsorbent powder using a wet grinding method of high-energy vibration ball grinding treatment process; in which a purity of the oxygen adsorbent powder is ≥99.9%, and a particle size of the oxygen adsorbent powder is ≤8 μm; mixing the high-oxygen hydride-dehydride titanium powder with the oxygen adsorbent powder in a protective atmosphere, and then press-forming the powder obtained after mixing to obtain a raw material blank; and performing atmosphere protective sintering treatment on the raw material blank to obtain a titanium matrix composite. The method prepares a titanium matrix composite reinforced by in-situ self-generating multi-scale Ca—Ti—O, TiC, TiB particles. The microstructure and grains are effectively refined, and the strength and plasticity of the material are significantly improved.

IPC Classes  ?

• B22F 3/10 - Sintering only
• B22F 1/05 - Metallic powder characterised by the size or surface area of the particles
• B22F 1/12 - Metallic powder containing non-metallic particles
• B22F 9/04 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling

Abstract

The present invention provides a treatment method for high-phosphorus iron ore, comprising: mixing high-phosphorus iron ore, a reducing agent, a dephosphorization agent, a binder, and water to obtain a mixture; performing ball press on the mixture to obtain a dry ball; performing reduction roasting on the dry ball in a rotary kiln to obtain roasted ore; and crushing the roasted ore, and then performing ore grinding and magnetic separation to obtain powder reduced iron. In the treatment method for high-phosphorus iron ore provided by the present invention, the rotary kiln is used as a main roasting apparatus; phosphorus in the high-phosphorus iron ore can be effectively removed; moreover, the powder reduced iron high in iron grade and low in phosphorus content is produced; and the whole technological process is simple and easy to implement, and the economic value is high.

IPC Classes  ?

• C21B 13/08 - Making spongy iron or liquid steel, by direct processes in rotary furnaces
• C22B 1/242 - BindingBriquetting with binders
• C22B 1/02 - Roasting processes

Abstract

Disclosed is a heating device, including a first and second ends of an indoor water supply pipe communicated with a main water supply pipe and a water supply end of a radiator; a valve, a first temperature sensor, a heating and control module and a third temperature sensor arranged between the first and second ends; two ends of the heating and control module connected with a bypass pipe; a first and second ends of an indoor return water pipe communicated with a main return water pipe and a return water end of the radiator; a three-way valve and a second temperature sensor arranged between the first end and the second end of the indoor return water pipe; and a first and second ends of the water pump communicated with a third end of the three-way valve and the indoor water supply pipe.

IPC Classes  ?

• F24D 3/10 - Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks
• F24D 19/10 - Arrangement or mounting of control or safety devices
• F24D 13/04 - Electric heating systems using electric heating of heat-transfer fluid in separate units of the system
• G05B 19/042 - Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors

Abstract

The present invention belongs to the field of treatment of urban organic wastes, and specifically relates to a high-value treatment system or method for urban wet garbage. According to the present invention, through the steps such as oil extraction, high-efficiency hydrolysis, high-value biological conversion, simultaneous recovery of released nitrogen and phosphorus and deep utilization of residues, urban wet garbage is converted into acetic acid by high-value treatment, produced by-products including carbon dioxide and hydrogen are biologically converted into acetic acid, released nitrogen and phosphorus are recycled into slow-release fertilizers, and solid residues are used to prepare materials capable of promoting conversion of the wet garbage into acetic acid through high-value treatment. According to the present invention, not only can high-value treatment of the urban wet garbage be realized, but also produced waste gases and waste residues are recycled.

IPC Classes  ?

• C02F 11/04 - Anaerobic treatmentProduction of methane by such processes
• C02F 11/143 - Treatment of sludgeDevices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
• C02F 11/147 - Treatment of sludgeDevices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
• C12P 7/54 - Acetic acid

Abstract

The present disclosure provides a coal bump control method for sectional hydraulic fracturing regions of a near vertical ultra thick coal seam. The method includes: deepening a main shaft from a mining level to a fracturing level; excavating a cross-hole from a roof rock layer of a coal seam at the fracturing level to enter a coal seam being mined, and excavating a roadway along the strike of the coal seam; and drilling hydraulic fracturing boreholes in a dedicated fracturing roadway along an inclination angle of the coal seam to the coal seam above the roadway, wherein the length of the borehole makes the borehole in communication with a goaf, and the spacing of the boreholes along the strike and the sectional spacing of the boreholes in an inclination direction are designed according to the parameters of fracturing equipments and the fracturing length.

IPC Classes  ?

• E21C 37/12 - Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by injecting into the borehole a liquid, either initially at high pressure or subsequently subjected to high pressure, e.g. by pulses, by explosive cartridges acting on the liquid

Abstract

Disclosed is a metal-semiconductor contact structure based on two-dimensional (2D) semimetal electrodes, including a semiconductor module and a metal electrode module, where the semiconductor module is a 2D semiconductor material, and the metal electrode module is a 2D semimetal material with no dangling bonds on its surface; the 2D semiconductor material and the 2D semimetal material are interfaced with a Van der Waals interface with a surface roughness of 0.01-1 nanometer (nm) and no dangling bonds on the surface, the 2D semiconductor material and the 2D semimetal material are spaced less than 1 nm apart.

IPC Classes  ?

• H01L 29/24 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only inorganic semiconductor materials not provided for in groups , ,  or
• H01L 29/47 - Schottky barrier electrodes
• H01L 29/76 - Unipolar devices
• H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
• H01L 29/40 - Electrodes
• H01L 29/43 - Electrodes characterised by the materials of which they are formed
• H01L 29/78 - Field-effect transistors with field effect produced by an insulated gate
• H01L 29/417 - Electrodes characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
• H01L 31/0224 - Electrodes
• H01L 21/74 - Making of buried regions of high impurity concentration, e.g. buried collector layers, internal connections

Abstract

A secondary cooling control method for reinforcing surface solidification structure of microalloyed steel continuous casting bloom includes: in situ observing precipitation behavior of secondary phase particles of the microalloyed steel, and determining a concentrated precipitation temperature range; cooling the microalloyed steel at different cooling rates, obtaining a particle size and a volume fraction of the secondary phase particles of the microalloyed steel at different cooling rates; determining an optimal average cooling rate; determining an optimal average cooling rate r; determining an optimal average cooling rate; and determining an optimal average cooling rate range through intersection of the three optimal average cooling rates whereby the continuous casting secondary cooling is optimized. The present invention can enhance the surface solidification structure of continuous casting bloom and reduce surface and subsurface cracks of the microalloyed steel continuous casting bloom.

IPC Classes  ?

• B22D 11/22 - Controlling or regulating processes or operations for cooling cast stock or mould
• C21D 6/02 - Hardening by precipitation
• B22D 11/00 - Continuous casting of metals, i.e. casting in indefinite lengths

Abstract

A method for monitoring hydraulic fracturing range of a surface vertical shaft is provided by the present disclosure, belonging to the technical field of ultrahigh-pressure hydraulic fracturing monitoring of the coal mine vertical shafts. The method comprises the following steps: connecting, by an eight-thread communication cable, a high-precision portable micro-seismic monitoring acquisition instrument to a high-sensitivity deep hole sensor, and performing uphole-crosshole-downhole monitoring simultaneously, specifically as follows: providing uphole-crosshole-downhole monitoring holes respectively, and installing deep hole geophones in the monitoring holes; then laying communication cables uphole-crosshole-downhole to connect the geophones to the portable high-precision micro-seismic acquisition instrument respectively; then performing high-precision positioning on the fissure development range by monitoring recorded events and time, thus determining the directions and ranges of a main fracture and secondary induced fractures of hydraulic fractures.

IPC Classes  ?

• G01V 1/40 - SeismologySeismic or acoustic prospecting or detecting specially adapted for well-logging
• E21B 43/26 - Methods for stimulating production by forming crevices or fractures
• G01V 1/28 - Processing seismic data, e.g. for interpretation or for event detection
• E21C 41/18 - Methods of underground miningLayouts therefor for brown or hard coal

Abstract

A method of making steel by deeply dephosphorization in a hot metal tank and decarburization using semi-steel with nearly zero phosphorus load in a converter includes the following steps: putting an efficient dephosphorization agent into the hot metal tank in advance, and conducting dephosphorization during blast furnace tapping and transportation of blast furnace hot metal by the hot metal tank to obtain semi-steel with [P] less than 0.04 wt. % and [C] greater than or equal to 3.5 wt. %; and removing dephosphorization slag, and pouring the semi-steel into the converter for decarburization to obtain molten steel. The efficient dephosphorization agent includes iron oxide scale, lime, and composite calcium ferrite. According to the method, a phosphorus content of the blast furnace hot metal is reduced to be less than or equal to 0.04 wt. % through the efficient dephosphorization agent.

IPC Classes  ?

• C21C 7/064 - DephosphorisingDesulfurising
• C21C 7/068 - Decarburising
• C21C 1/02 - Dephosphorising or desulfurising

Abstract

5. Therefore, the composite calcium ferrite has a lower melting point, a higher lime dissolution efficiency, and better fluxing and dephosphorization effects during primary smelting and refining of molten steel, and has broad prospects for use in industry.

IPC Classes  ?

• C04B 35/26 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on ferrites

Abstract

Disclosed is a method for recycling a coal liquefaction residue. The method includes S1, drying a coal liquefaction residue and pulverizing to obtain a pulverized coal liquefaction residue; S2, subjecting the pulverized coal liquefaction residue to a solvothermal extraction in an autoclave to obtain an extract liquid and a residue; S3, distilling the extract liquid and recovering an organic solvent to obtain a solid extract.

IPC Classes  ?

• C10L 5/48 - Solid fuels essentially based on materials of non-mineral origin on industrial residues or waste materials
• C04B 33/04 - ClayKaolin
• C04B 33/135 - Combustion residues, e.g fly ash, incineration waste
• C04B 33/32 - Burning methods
• C04B 35/626 - Preparing or treating the powders individually or as batches
• C10L 5/08 - Briquetting processes without the aid of extraneous binders
• C10L 5/36 - Shape

Abstract

A flapping-wing aerial robot formation control method includes: determining a trailing vortex generation mechanism, an energy saving principle and a trailing vortex attenuation mechanism of the formation flight of a group of wild geese in accordance with the pattern of the formation flight of the group of wild geese; determining the formation flight of a group of flapping-wing aerial robots and a formation switching solution in accordance with the trailing vortex generation mechanism, energy saving principle and trailing vortex attenuation mechanism of the formation flight of the group of wild geese in conjunction with the flapping characteristic of a flapping-wing aerial robot from the perspective of energy consumption equalization and energy saving; and carrying out formation keeping control and formation reconfiguration control in accordance with the formation flight of the group of flapping-wing aerial robots and the formation switching solution by controlling positions of the group of flapping-wing aerial robots.

IPC Classes  ?

• G05D 1/10 - Simultaneous control of position or course in three dimensions
• B64C 33/00 - Ornithopters

Abstract

A direction-finding and positioning system of electromagnetic emission of coal or rock fracture includes a three-axis electromagnetic sensor array, a signal acquisition module and a direction-finding and positioning terminal; the three-axis electromagnetic sensor array is composed of at least four three-axis electromagnetic sensors configured to synchronously sense magnetic field strength in three-axis direction based on a tunnel magneto resistance technology, and obtain a real magnetic field vector in space by measuring; the signal acquisition module is configured to acquire magnetic field vector variable information of multiple measuring points in real-time, and after extracting magnetic field vector variable parameters, transmitting the magnetic field vector variable parameters to the direction-finding and positioning terminal; the direction-finding and positioning terminal is configured to perform direction-finding and positioning calculations according to the magnetic field vector variable parameters received, and performing a three-dimensional dynamic visual display to positioning results, positioning time, and positioning coordinates.

IPC Classes  ?

• G01V 3/12 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with electromagnetic waves
• G01V 3/38 - Processing data, e.g. for analysis, for interpretation or for correction
• G01V 3/165 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat operating with magnetic or electric fields produced or modified by the object or by the detecting device

Abstract

In a general aspect, a ceramic thin film with nanotwinned regions at a tunable volume fraction is manufactured. In some aspects, a method for manufacturing a ceramic thin film on a surface of a substrate in an evacuated chamber is disclosed. The ceramic thin film includes crystalline grains; and each of the crystalline grains includes one or more nanotwinned regions. The one or more nanotwinned regions have a volume fraction in a range of 30-80% of the ceramic thin film. The ceramic thin film comprises titanium, nitrogen, and boron. A plurality of targets including a plurality of sputtering materials is prepared. A gas atmosphere in the evacuated chamber is formed. Electric power is supplied to the plurality of targets to cause co-sputtering of the plurality of sputtering materials to form the ceramic thin film with the one or more nanotwinned regions.

IPC Classes  ?

• C23C 14/34 - Sputtering
• C23C 14/06 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
• C23C 14/00 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
• C30B 29/38 - Nitrides
• C30B 25/06 - Epitaxial-layer growth by reactive sputtering
• C30B 25/18 - Epitaxial-layer growth characterised by the substrate
• C01B 21/06 - Binary compounds of nitrogen with metals, with silicon, or with boron

Abstract

In a general aspect, a ceramic thin film with nanotwinned regions at a tunable volume fraction is manufactured. In some aspects, a method for manufacturing a ceramic thin film on a surface of a substrate in an evacuated chamber is disclosed. The ceramic thin film includes crystalline grains; and each of the crystalline grains includes one or more nanotwinned regions. The one or more nanotwinned regions have a volume fraction in a range of 30-80%of the ceramic thin film. A plurality of targets including a plurality of sputtering materials is prepared. A gas atmosphere in the evacuated chamber is formed. Electric power is supplied to the plurality of targets to cause co-sputtering of the plurality of sputtering materials to form the ceramic thin film with the one or more nanotwinned regions.

IPC Classes  ?

• C23C 14/35 - Sputtering by application of a magnetic field, e.g. magnetron sputtering

Abstract

A pull cord type turning mechanism for a butterfly-inspired flapping-wing aerial robot includes a motor, a cord reel, a cord reel gear, a potentiometer gear, a potentiometer, a control module, and a power supply. The control module is connected to the motor and the potentiometer. A rotary shaft of the motor is connected to the cord reel, the cord reel is coaxially connected to the cord reel gear, the cord reel gear is meshed with the potentiometer gear, and the potentiometer gear is connected to a rotary shaft of the potentiometer. The cord reel gear is provided with two cord grooves and two pull cords. One ends of the two pull cords are fixed in the two cord grooves, respectively, and the other ends thereof are fixed at the tips of front wings of two sides of the butterfly-inspired flapping-wing aerial robot, respectively.

IPC Classes  ?

• B64C 33/02 - WingsActuating mechanisms therefor
• B64U 10/40 - Ornithopters
• B64U 50/19 - Propulsion using electrically powered motors
• F16H 19/00 - Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion

Abstract

The present application provides a 5G and TSN joint scheduling method based on wireless channel information. In the present invention, adjustment is made by configuration of retransmission factors under different channel conditions, and time jitter caused by transmission of data packets in a 5G system is eliminated. Thus, a definitive end-to-end time delay guarantee for time-triggered service flows is provided. In a 5G and TSN joint time scheduling strategy provided by the present invention, queue management in a TSN domain is no longer carried out according to a TSN first-come-first-served mechanism. Instead, given that periods of service flows are distinguished, queuing priority is defined according to the performance of channel conditions of 5G air interface resources allocated to the service flows. Regarding transmission time, in the TSN domain, of service flows having the same service priority, the time delay, in the TSN domain, of service flows corresponding to poor 5G air interface resource channel conditions is lower.

IPC Classes  ?

• H04W 72/12 - Wireless traffic scheduling
• H04W 28/02 - Traffic management, e.g. flow control or congestion control

Abstract

An Artificial Intelligence (AI) engine-supporting downlink radio resource scheduling method and apparatus are provided. The AI engine-supporting downlink radio resource scheduling method includes: constructing an AI engine, establishing a Socket connection between an AI engine and an Open Air Interface (OAI) system, and configuring the AI engine into an OAI running environment to utilize the AI engine to replace a Round-Robin scheduling algorithm and a fair Round-Robin scheduling algorithm adopted by a Long Term Evolution (LTE) at a Media Access Control (MAC) layer in the OAI system for resource scheduling to take over a downlink radio resource scheduling process; sending scheduling information to the AI engine through Socket during the downlink radio resource scheduling process of the OAI system; and utilizing the AI engine to carry out resource allocation according to the scheduling information, and returning a resource allocation result to the OAI system.

IPC Classes  ?

• H04W 72/50 - Allocation or scheduling criteria for wireless resources
• G06N 20/00 - Machine learning
• H04L 47/62 - Queue scheduling characterised by scheduling criteria
• H04W 72/23 - Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

Provided in the present invention is a method for treating high-phosphorus oolitic iron ores. The method comprises the following steps: A) mixing the high-phosphorus oolitic iron ores, a dephosphorizing agent and water, and pressing the mixture into pellets to obtain mixed pellets, wherein the dephosphorizing agent comprises calcium carbonate and calcium fluoride, and the mass ratio of the calcium carbonate to the calcium fluoride is 1: (0.15-0.30); B) drying the mixed pellets, and subjecting same to oxidizing roasting to obtain oxidized roasted pellets; C) subjecting the oxidized roasted pellets to reduction roasting in a reducing atmosphere to obtain reduced pellets; and D) isolating air from the reduced pellets, and cooling the reduced pellets to room temperature with the air isolated, followed by ore grinding-magnetic separation to obtain a reduced iron product. In the present invention, the technological process is simple, the removal rate of phosphorus from the high-phosphorus oolitic iron ores is high, the iron grade and recovery rate of the powdery reduced iron are high, and the reduction effect is not affected due to the change in the iron grade and phosphorus content of the raw ore within a certain range.

IPC Classes  ?

• C22B 1/24 - BindingBriquetting
• C22B 1/02 - Roasting processes
• C21B 13/00 - Making spongy iron or liquid steel, by direct processes

Abstract

A method for predicting a yield of calcium in a calcium treatment process based on deep neural network as provided relates to a calcium treatment process of molten steel refining in the field of iron and steel metallurgy, and includes steps of: obtaining production and operation data information of each of charges and thereby constructing a dataset; training and testing a deep neural network based on constructed dataset to establish a prediction model; and based on the prediction model, predicting and calculating current yield of calcium by taking actual production and operation data information of each charge as input. The method can predict the yield of calcium in the calcium treatment process, is favorable for accurately controlling a calcium content of steel, can stably control the calcium treatment process, improve the calcium treatment effect, improve the product quality, and ensure the production stability.

IPC Classes  ?

• G16C 20/10 - Analysis or design of chemical reactions, syntheses or processes
• G16C 20/70 - Machine learning, data mining or chemometrics

Abstract

22. The refractory material has a low amount of a high-temperature liquid phase, a uniform pore structure, and good thermal shock stability; can be widely used in steel-making production lines and also in the refractory linings of rotary kilns, and has good erosion resistance and low thermal conductivity; and the performance thereof is obviously superior to that of many existing refractory materials such as silicon carbide-mullite bricks and magnesia-alumina spinel bricks.

IPC Classes  ?

• C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
• C04B 35/66 - Monolithic refractories or refractory mortars, including those whether or not containing clay
• C04B 35/645 - Pressure sintering

Abstract

22. The refractory material prepared by the present application has a high purity, good erosion resistance, good slag permeability resistance and high thermal shock stability, reduces the amount of refractory material eroded into molten steel, reduces the pollution of the molten steel, and can also give full play to the performance advantages of high-purity raw materials.

IPC Classes  ?

• C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
• C04B 35/66 - Monolithic refractories or refractory mortars, including those whether or not containing clay
• C04B 35/645 - Pressure sintering

Abstract

Disclosed are a CA6-based thermally insulating refractory material with a medium volume density, a preparation method therefor, and the use thereof. The CA6-based thermally insulating refractory material with a medium volume density in the present invention has phases comprising CA6 and one or more selected from C2M2A14, CM2A8, magnesium aluminate spinel, and corundum, and the refractory material has a high purity, good high temperature stability, a uniform structure, stable performance, a relatively low thermal conductivity, and good corrosion resistance to a metal melt, slag, etc.

IPC Classes  ?

• C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
• C04B 35/66 - Monolithic refractories or refractory mortars, including those whether or not containing clay
• C04B 35/645 - Pressure sintering

Abstract

A screw smelting machine melts raw materials with a different chemical ratio in a mixing funnel in a feeding order to prevent the long-range diffusion of a melt, and controls outflow at a suitable speed. A centrifugal casting machine solidifies the melt with the ingredients gradient varying into a radial ingredient gradient material by a centrifugal casting style. A temperature sensor monitors temperature of an outer surface of a centrifuge cavity of the centrifugal casting machine during centrifugal casting, and transmits the temperature to a control platform. The control platform determines an optimal flow rate of the melt at an end of screw rod according to ingredient gradient of ingredient radial-gradient pipe materials and a thickness of each component gradient material required with preparation, in combination with a real-time data fed back from the temperature sensor, and feeds back to a feeding end.

IPC Classes  ?

• B22D 13/02 - Centrifugal castingCasting by using centrifugal force of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis
• B22D 13/10 - Accessories for centrifugal casting apparatus, e.g. moulds, linings thereforMeans for feeding molten metal, cleansing moulds or removing castings
• B22D 13/12 - Controlling, supervising, specially adapted to centrifugal casting, e.g. for safety reasons
• B29C 41/04 - Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
• B29C 41/36 - Feeding the material on to the mould, core or other substrate
• B22D 13/04 - Centrifugal castingCasting by using centrifugal force of shallow solid or hollow bodies, e.g. wheels or rings, in moulds rotating around their axis of symmetry
• B29C 39/08 - Introducing the material into the mould by centrifugal force
• B29C 39/22 - Component parts, details or accessoriesAuxiliary operations
• C03B 19/02 - Other methods of shaping glass by casting

Abstract

2322322 calculated according to parts by mass to be 45.5-95.5%:2.0-8.4%:0-50%; and the chemical composition are placed into a high-temperature furnace and a mold for hot-pressing, molding and sintering, wherein the temperature is increased while hot-pressing is carried out, the maximum temperature is 1550-1800°C, and the hot-pressing strength is 0.5-30 MPa. In the present invention, when no sintering agent is added, a hot-pressing sintering process is employed according to a proportion to obtain a high-purity compact calcium hexa-aluminate-based refractory material, and the refractory material has excellent resistance to molten steel erosion and thermal shock stability, and can be widely applied in metallurgy, building materials and petrochemical industries as well as other industries. The preparation method is scientific and reasonable, product purity is high, and the prepared refractory material product can increase a device operation period; in addition, production costs are reduced, and energy-saving and emission-reducing effects are achieved.

IPC Classes  ?

• C04B 35/44 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminates
• C04B 35/66 - Monolithic refractories or refractory mortars, including those whether or not containing clay
• C04B 35/645 - Pressure sintering

Abstract

The present disclosure provides a method for co-extraction of vanadium, titanium and chromium from vanadium slag. The method selectively reduces pyroxene and fayalite wrapped on spinel through low-temperature hydrogen reduction, iron removal by ferric chloride, and low-temperature leaching of the vanadium slag by oxalic acid, thereby destroying a structure of the spinel, dissociating a spinel phase and a silicate phase, and fully exposing the spinel phase. The method also directly leaches the vanadium slag at a low temperature by acidity and strong complexation of the oxalic acid, and destroys the structure of the spinel, such that vanadium, titanium, chromium and oxalate are complexed into a solution to co-extract vanadium, titanium and chromium. The present disclosure extracts vanadium, titanium and chromium from the vanadium slag, with a leaching rate each being greater than 99%.

IPC Classes  ?

• C22B 7/04 - Working-up slag
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
• C22B 34/12 - Obtaining titanium
• C22B 34/22 - Obtaining vanadium
• C22B 34/32 - Obtaining chromium

Abstract

2 and the height of the oxygen lance position according to the fire point area temperature changes and process requirements in different smelting stages, so that the secondary smelting system interlockingly and dynamically controls the fire point area temperature and the molten pool heating rate.

IPC Classes  ?

• C21C 5/32 - Blowing from above
• C21C 5/46 - Details or accessories

Abstract

A machine learning-based method for designing a high-strength high-toughness steel, including: (S1) obtaining data and filling in missing parts to form a data set; (S2) selecting feature data in the data set to form a standard data set; (S3) constructing two machine learning models of the high-strength high-toughness steel; (S4) completing training after the two models are evaluated to be qualified; (S5) finding frontier points, drawing a Pareto front, and distinguishing a known region and a feature space; (S6) in the feature space, setting a step for the feature data, drawing a grid space, and performing multiple training predictions on each grid point by using the models, to obtain predicted Gaussian distributions of two objectives; and (S7) searching for an expected improvement point through an efficient global optimization algorithm, and obtaining design parameter values of corresponding features.

IPC Classes  ?

• G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
• G06F 111/06 - Multi-objective optimisation, e.g. Pareto optimisation using simulated annealing [SA], ant colony algorithms or genetic algorithms [GA]

Abstract

There is provided a method of dynamic control for a bottom blowing O2—CO2—CaO converter steelmaking process. In the process, O2 is adopted as a top blowing gas, a mixed gas O2+CO2 is adopted as a bottom blowing carrier gas to inject lime powders into the converter from a bottom blowing tuyere. The ingredients of the molten steel in the converter steelmaking process are predicted based on the conservation of matter, in combination with the ingredient data of charged molten iron, the ingredient data of the converter gas in the converter blowing process, and working conditions of the bottom blowing device. The top blowing oxygen amount, the bottom blowing gas ratio and the flow rate of lime powder are dynamically adjusted stage by stage according to requirements for target ingredients at the end point of blowing.

IPC Classes  ?

• C21C 5/35 - Blowing from above and through the bath
• C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups

Abstract

Disclosed are a superhydrophobic coating with abrasion resistance and a preparation method thereof. The coating has a composite structure formed by a nanohybrid composed of nano-SiO2 and multi-wallet carbon nanotubes, and a resin as a matrix.

IPC Classes  ?

• C09D 5/16 - Anti-fouling paintsUnderwater paints
• C09D 7/61 - Additives non-macromolecular inorganic
• C09D 7/40 - Additives
• C09D 7/80 - Processes for incorporating ingredients
• C01B 32/168 - After-treatment
• C01B 33/12 - SilicaHydrates thereof, e.g. lepidoic silicic acid

Abstract

Disclosed in the present invention is a metal-organic composite nano-drug, comprising a heterostructural metal-based nanoparticle treated by a first surface modifier and a cross-linking agent in sequence, and a pharmaceutical ingredient compound treated by a second surface modifier. The nanoparticle is coupled with the pharmaceutical ingredient compound by means of the cross-linking agent, the pharmaceutical ingredient compound is ginsenoside, and the nanoparticle is Au@CoFeB. Further disclosed in the present invention are preparation and application of the nano-drug. The nano-drug provided by the present invention can well inhibit the development of liver cancer, and has an in-vitro and in-vivo molecular image tracing function.

IPC Classes  ?

• A61K 47/69 - Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additivesTargeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit
• A61K 47/52 - Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additivesTargeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an inorganic compound, e.g. an inorganic ion that is complexed with the active ingredient
• A61K 47/54 - Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additivesTargeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic compound
• A61K 31/704 - Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages attached to a carbocyclic compound, e.g. phloridzin attached to a condensed carbocyclic ring system, e.g. sennosides, thiocolchicosides, escin, daunorubicin, digitoxin
• A61K 49/04 - X-ray contrast preparations
• A61P 35/00 - Antineoplastic agents
• B82Y 5/00 - Nanobiotechnology or nanomedicine, e.g. protein engineering or drug delivery
• B82Y 40/00 - Manufacture or treatment of nanostructures

Abstract

The present invention relates to the field of organic waste treatment of urban waste, and in particular, to a high-value treatment system or method for urban wet waste. In the present invention, by means of steps such as oil extraction, high-efficiency hydrolysis, high-value biological conversion, simultaneous recovery of released nitrogen and phosphorus and deep utilization of residues, the high-value treatment of urban wet waste to acetic acid, the biological conversion of generated by-products, i.e. carbon dioxide and hydrogen, to acetic acid, the recovery of released nitrogen and phosphorus to a sustained-release fertilizer, and the preparation of solid residues into a material for promoting the high-value treatment of wet waste to acetic acid are realized. The present invention can not only realize the high-value treatment of urban wet waste, but also reuse generated waste gases and waste residues.

IPC Classes  ?

• C02F 11/04 - Anaerobic treatmentProduction of methane by such processes
• C02F 11/143 - Treatment of sludgeDevices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
• C02F 11/12 - Treatment of sludgeDevices therefor by de-watering, drying or thickening
• C02F 11/147 - Treatment of sludgeDevices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
• C12P 7/40 - Preparation of oxygen-containing organic compounds containing a carboxyl group
• C05G 1/00 - Mixtures of fertilisers covered individually by different subclasses of class

Abstract

An optimization method for a directional preparation technique and efficient use of semi-coke for blast furnace injection. Firstly, the volatile and the ash content of target semi-coke are preset, and then the volatile and the ash removal percentages of a raw coal are calculated; after ash removal, several sets of dry distillation carbonization temperatures and carbonization times are obtained according to the volatile removal percentage, and the relationships between a combustion rate, abrasiveness, explosiveness and jet flow property and the carbonization temperature are respectively established to obtain the optimal actual carbonization temperature; and semi-coke for blast furnace injection is obtained at an actual carbonization temperature. The directional preparation is suitable for the semi-coke for blast furnace injection, and an optimal coal-compounding scheme is obtained, thus achieving the efficient and safe injection of blast furnace iron-making fuels, and energy conservation and emission reduction.

IPC Classes  ?

• C10B 57/02 - Multi-step carbonising or coking processes
• C10B 53/04 - Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
• C10B 57/14 - Features of low-temperature carbonising processes

Abstract

An online learning system based on cloud-client integration multimodal analysis includes: an online learning module used for providing an online learning interface for a user and collecting image data, physiological data, posture data and interaction log data during an online learning process of the user; a multimodal data integration decision module used for preprocessing the image data, physiological data and posture data, extracting corresponding features, and making a comprehensive decision in combination with the interaction log data to obtain a current learning state of the user; a cloud-client integration system architecture module used for coordinating use of computing resources of a cloud server and a local client according to usage conditions of the cloud server and the local client, and visually displaying a progress of computing tasks; a system interaction adjustment module used for adjusting the online learning module according to the current learning state of the user.

IPC Classes  ?

• G09B 5/02 - Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
• G06N 20/00 - Machine learning
• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
• G06K 9/46 - Extraction of features or characteristics of the image

Abstract

A long-life service method for powder-bottom-injecting converter based on collaborative hot replacement of furnace bottom and bottom purging brick belongs to the field of steelmaking technologies using powder-bottom-injecting converters. According to equipment characteristics, process characteristics, and erosion characteristics of the powder-bottom-injecting converter, the design, arrangement, installation, use, maintenance, and replacement of the bottom purging/powder injection bricks are systematically optimized and improved, a technology of automatically detecting the erosion height of bottom purging bricks is adopted, and hot replacement of bottom purging/powder injection bricks and hot replacement of the converter furnace bottom are used collaboratively, which not only can prolong the service life of a single bottom purging/powder injection brick, but also can greatly prolong the overall life of the powder-bottom-injecting converter from 1000-3000 heats in the prior art to 6000-10000 heats. Hence, the life of the powder-bottom-injecting converter is as long as that of a conventional converter.

IPC Classes  ?

• C21C 5/46 - Details or accessories
• C21C 5/48 - Bottoms or tuyères of converters
• F27D 3/16 - Introducing a fluid jet or current into the charge
• C21C 5/30 - Regulating or controlling the blowing

Abstract

A kiln system is provided, including a drying section, a preheating section, a firing section, a soaking section, a cooling section, and a decarburization section arranged between the drying section and the preheating section. The decarburization section includes an ignition zone, a hot air combustion/pyrolysis zone, and a waste heat recovery pipeline. A heat source is introduced into the ignition zone so that the temperature of the ceramsite of the raw materials with heating values in the zone is 400° C. to 900° C. The hot air combustion/pyrolysis zone is configured for combusting or pyrolyzing carbon-containing materials and organic components in the raw materials with heating values in the ceramsite. The waste heat recovery pipeline is configured for discharging decarburization exhaust gas and recovering heat released after the raw materials with heating values in the ceramsite are combusted or pyrolyzed in the decarburization exhaust gas.

IPC Classes  ?

• F27D 17/10 - Arrangements for using waste heat
• F27B 9/12 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge

Abstract

A head-face dimension classification method based on three-dimensional point cloud coordinates, comprising: step 1: acquiring head-face three-dimensional point cloud data (1); step 2: defining a key parameter to obtain a radius at a key point (2); step 3: performing data processing to obtain a final head-face data model (3); and step 4: according to the final head-face data model, completing head dimension classification using principal component analysis (4), wherein step 3 comprises: step 31: denoising the acquired head-face three-dimensional point cloud data; step 32: for the denoised point cloud data, adjusting data model grid vertex coordinates; step 33: performing hole filling; and step 34: performing smoothing. According to the method, head-face shape information and curved surface information are comprehensively considered according to point cloud data obtained by three-dimensional scanning; by selecting a data processing template to complete a data processing procedure, data recovery and noise reduction effects are achieved, and the analysis efficiency is improved; in addition, principal component analysis is creatively performed on point cloud coordinates, so that the accuracy of head dimension classification is improved.

IPC Classes  ?

• G06K 9/80 - Combination of image preprocessing and recognition functions