1436 results about "Mineral processing" patented technology

A multispectral combined method for online detection of slurry components in a mineral processing process, relating to the technical field of spectrum detection. The multispectral combined method comprises: collecting slurry samples having a gradient distribution of moisture content to serve as test samples, and using an NIR system to acquire near-infrared spectrum data of the test samples; performing spectral preprocessing on the near-infrared spectrum data, so as to reduce the interference of spectral noise on subsequent modeling, and establishing an NIR regression model for slurry moisture content; using an LIBS system to acquire plasma spectrum data of the test samples, and establishing an LIBS regression model for slurry concentration; substituting the NIR regression model for slurry moisture content into the LIBS regression model for slurry concentration, and optimizing an algorithm to realize model correction and compensation; and establishing a quantitative analysis model for slurry element content to realize LIBS and NIR multispectral combination. The multispectral combined method can effectively improve the online detection precision of slurry components in a mineral processing process and improve the accuracy of a regression model.

The invention discloses a beneficiation process intelligent optimization control method and system based on a knowledge graph, and relates to the technical field of beneficiation process control, and the method comprises the steps: collecting static attribute data and dynamic operation data, constructing a causal knowledge graph, and obtaining a causal relationship between nodes in the causal knowledge graph and an optimization target constraint; based on a causal relationship between nodes in the causal knowledge graph and optimization target constraints, screening data from a historical database to form a high-value historical data set; according to the high-value historical data set, a reward function model is constructed, a strategy function is trained, and a reinforcement learning control strategy is obtained; running the reinforcement learning control strategy, generating a control instruction, and issuing the control instruction to the target equipment to obtain dynamic optimization control; and performing real-time monitoring on the dynamic optimization control, and performing anti-fact reasoning based on a causal knowledge graph when abnormal deviation of the running state is detected to obtain an anti-fact reasoning result.

The invention provides a mineral leaching property analysis method, which belongs to the field of process mineralogy, and comprises the following steps: crushing and enriching a sample to be detected, and selecting single mineral particles to obtain target mineral particles; the preparation method comprises the following steps: coating a sample preparation grinding tool with epoxy resin glue, adding target mineral particles, and carrying out curing and grinding treatment to obtain a primary sample; cutting the primary sample, placing the grinding surface downwards and the three wear-resistant alloys at the bottom of a sample preparation grinding tool, injecting epoxy resin glue, curing to form a composite sample, accurately grinding, polishing, performing carbon spraying treatment, performing first automatic mineralogical analysis, measuring the area of a target mineral, cleaning, and performing leaching treatment to obtain a treated sample; and after solidification, accurate grinding and polishing and carbon spraying treatment, secondary automatic mineralogical analysis is carried out, the area of the residual target mineral is measured, and the leaching index of the target mineral is calculated. Reliable technical support is provided for mineral processing technology optimization and resource evaluation, and the method is particularly suitable for development of efficient leaching technologies of precious metal, rare earth and the like.

The invention provides a composite reagent system and a chalcopyrite and sphalerite collecting method, and belongs to the technical field of mineral processing. The composite reagent system comprises a histidine derived functional group collecting agent and a black agent, and the histidine derived functional group collecting agent (containing a total sulfur ester group, a sulfydryl functional group and a side chain imidazole ring) serves as a core and is compounded with the black agent according to a specific proportion to form a target combination-synergistic interaction flotation mechanism. The histidine derivative collecting agent derives high-activity functional groups under the alkaline condition, and after sulfydryl is dissociated, stable chemical bonds are formed by the dissociated sulfydryl and metal ions on the surfaces of the chalcopyrite and the zinc sulfide. The black powder serves as an auxiliary collecting agent, and the collecting capacity of fine-grain or low-activity sulfide minerals is enhanced through chemical adsorption of dithiophosphate radicals and metal ions on the surfaces of the chalcopyrite and the sphalerite. After the two components are compounded, the selective enrichment efficiency of copper-zinc minerals in the flotation process is remarkably improved.

The invention relates to the technical field of mineral processing visual detection, and discloses a visual analysis system for detecting the grade of a phosphorite flotation froth layer. The system comprises an image acquisition and decomposition module, a parallel feature extraction module, a dynamic feature fusion module, a foam evolution analysis module and a grade decision output module. The system performs multi-scale decomposition on a foam image, extracts physical and semantic features in parallel, constructs a dynamic fusion network based on bidirectional mapping to perform iterative interaction, and generates a multi-modal feature descriptor. Therefore, self-organizing growth of a foam evolution graph is driven, an evolution track of a key foam primitive is positioned and tracked, a foam grade state vector is formed, and finally, a regulation and control decision is output in combination with external control parameters. According to the system, deep fusion of physical and semantic features and deep analysis of the foam dynamic evolution process are achieved, the accuracy and predictability of foam grade state sensing are improved, and an effective means is provided for accurate control over the flotation process.

The invention relates to the technical field of mineral processing data processing, in particular to a preparation method of a high-calcium fluorite and barite paragenic ore combined inhibitor, which comprises the following steps: collecting multi-source process mineralogy data output by an X-ray fluorescence spectrometer, an automatic mineral analyzer and the like, converting the multi-source process mineralogy data into a structured format, and constructing a process mineralogy database; based on historical data of a database, a random forest algorithm is adopted to train a correlation model, the correlation rule of mineral characteristics such as calcite content, fluorite particle size distribution and barite monomer dissociation degree and the inhibitor ratio is learned, and parameters of the optimization model are fed back through a flotation test. The combined inhibitor solves the problem of selective separation caused by similar surface properties through a synergistic effect of covering active sites of fluorite calcium by modified water glass, regulating active sites of barite barium by citric acid and assisting in enhancing inhibition by modified starch, and solves the problem of low efficiency of multi-source data integration through structured data processing and model closed-loop optimization; the flotation separation efficiency and the concentrate grade are improved.

The invention provides a dump leaching method for improving the leaching rate of gold ore, and belongs to the technical field of mineral processing. The method comprises the following steps: firstly, separating minerals into oversize products and undersize products; mixing sodium carboxymethyl cellulose, bentonite and ferrous sulfate to obtain a mixture, and granulating the undersize product by using the mixture as a binder; and mixing the undersize product particles with the oversize product, and carrying out cyanide-free dump leaching. According to the method, through graded granulation and heap building, the problem that heap building permeability is poor due to the fact that the gold ore contains many clay minerals is solved. In the granulation stage, ferrous hydroxide colloid generated by hydrolysis of ferrous sulfate in the binder can assist ore particle agglomeration, and particle stability is enhanced; during subsequent cyanide-free dump leaching, ferrous sulfate can be used as an auxiliary reducing agent and a catalyst in a thiourea gold leaching system to promote oxidation and dissolution of gold; meanwhile, ferrous ions can adjust the oxidation-reduction potential of a system, so that the thiourea gold leaching reaction is in a more favorable potential interval, the oxidation efficiency of thiourea is improved, invalid decomposition of thiourea is reduced, and therefore the use amount of thiourea and the use amount of agents are reduced.

The invention discloses a special grinding aid for gold ore and a preparation method thereof, and belongs to the technical field of mineral processing, the special grinding aid for gold ore comprises the following raw materials: a monomer, an initiator, a chain transfer agent and a solvent; the monomers are an unsaturated polyether monomer A and an unsaturated carboxylic acid monomer B; or a monomer C containing an ethylenically unsaturated sulfonic acid group. The preparation method comprises the following steps: putting the raw materials into a water bath kettle, and polymerizing in a separate dropwise adding manner to prepare the special grinding aid for the gold ore. The prepared grinding aid can improve the problems of particle agglomeration, low fine grinding efficiency, low gold dissociation efficiency and the like in the gold ore grinding process, the concentrated utilization of the grinding aid limited in the fields of cement, ceramics and the like is improved, the grinding energy consumption can be reduced, and the material quality can be improved.

The invention relates to the technical field of mineral processing automation, and discloses a metal dissociation degree regulation-based grinding-flotation collaborative process optimization method which comprises the following steps: acquiring multi-dimensional sensor data in a grinding-flotation production process in real time; establishing a reference prediction model offline based on historical process data; in the online operation stage, the working condition drift state of the current process system is quantified and judged online; when it is judged that significant working condition drifting occurs, a residual compensation model is constructed online; and fusing the prediction result of the reference prediction model and the prediction result of the residual compensation model to generate a final process index prediction value. And based on the final process index predicted value, solving through an optimization algorithm, and generating a cooperative control set value. According to the method, the calculation cost and the data requirement of model maintenance are greatly reduced, and the response speed and the adaptive capacity of the system to the working condition change are remarkably improved, so that the long-term stability and reliability of the collaborative optimization effect are ensured.

The utility model relates to the technical field of ore crushing, and discloses a crusher for mineral separation, which comprises a base, a crushing barrel, a blanking barrel, a shearing crushing assembly, an extruding crushing assembly, a grinding assembly and a rotary driving assembly, the crushing barrel is arranged to perform princess installation on the shearing crushing assembly, the extrusion crushing assembly and the grinding assembly, so that ores are sequentially subjected to shearing crushing, extrusion crushing and grinding, the whole process is integrally performed, repeated operation is not needed, the processing efficiency of the equipment is improved, and smoke dust is effectively reduced.

The invention relates to the technical field of sewage treatment, and particularly provides a method and a system for realizing beneficiation wastewater N, N-diethyldithiocarbamate-C-N-S synergistic oxidation-reduction coupling treatment by an MABR oxygen layering process. According to the method and the system, a time sequence dissolved oxygen (DO) dynamic regulation and control strategy is innovatively developed: through periodic / pulse type switching anaerobic-hypoxia-aerobic conditions, oxygenolysis and ammonification reaction of N, N '-diethyldithiocarbamate are intensified directionally, and toxicity inhibition of intermediate products on functional bacteria is relieved. Based on the strategy, the system can accurately utilize biological membrane oxygen gradient spatial distribution in a single MABR reactor to realize a cascade reaction of sulfur oxidation-ammonification-aerobic nitrification-anoxic denitrification of ethyl sulfur nitrogen; or aiming at high-concentration diethyldithiocarbamate (gt; 50 mg / L) is coupled with a front anaerobic reactor, and ammoniation detoxification and denitrification nitrogen removal are enhanced.

The invention discloses a multi-component nano inhibitor for flotation separation of high-argillaceous copper sulphide ore and application, the nano inhibitor is a nano calcium carbonate-calcium oxide-sodium humate coating body, the nano inhibitor is applied to flotation separation of the high-argillaceous copper sulphide ore, collaborative optimization of slime inhibition and copper ore selective collection is achieved, and the flotation separation efficiency of the high-argillaceous copper sulphide ore is improved. And high-quality copper sulfide concentrate and sulfur concentrate are obtained. According to the method, the high specific surface area and the surface activity of the nano particles are utilized, under the weak alkaline environment without desliming, through the simple, convenient, economical and efficient mineral processing technology and reagent combination, efficient recovery of copper, gold and sulfur in the high-argillaceous ore is achieved, the use amount of lime is greatly reduced, and the technical problem of tailing sedimentation is solved.

The invention provides application of sodium 2, 3-dimercaptopropanesulfonate as an inhibitor in low-alkalinity copper-sulfur flotation separation, and relates to the technical field of mineral separation. When the compound serves as an inhibitor, the compound, a collecting agent and a foaming agent are prepared into a composite flotation reagent and used for low-alkalinity flotation separation of chalcopyrite and pyrite, flotation separation is conducted through the steps of one-time roughing, at least one-time scavenging and at least one-time concentration after ore grinding and grading, and copper concentrate is collected; the method can effectively solve the problems that the copper-iron separation effect is poor in the process of flotation separation of the chalcopyrite and the pyrite, the copper recovery rate is low due to addition of a large amount of lime and the like, the chalcopyrite and the pyrite can be efficiently separated under the low-alkalinity condition through the specific flotation process, and the flotation effect on the chalcopyrite is improved.

The invention belongs to the technical field of mineral processing, and particularly relates to a preparation method of a diatomite filter aid. The preparation method of the diatomite filter aid comprises the following steps: (1) calcining diatomite raw ore to obtain primary diatomite; (2) carrying out acid leaching treatment on the first-grade diatomite, and washing the first-grade diatomite subjected to acid leaching to obtain refined diatomite; and (3) calcining the refined diatomite in an acid atmosphere to obtain the diatomite filter aid. The diatomite filter aid has the beneficial effects that the diatomite filter aid meets the requirements of United States Pharmacopoeia and Chinese Pharmacopoeia.

The invention discloses a semi-autogenous mill crushing capacity evaluation method based on DEM simulation, and relates to the technical field of mineral processing, and the method comprises the following steps: measuring discrete element calculation required parameters of ores, steel balls and lining plate materials, and establishing a semi-autogenous mill geometric model; importing a geometric model of the semi-autogenous mill, and initializing discrete element calculation required parameters and particle processing parameters; a DEM simulation experiment is carried out, when simulation time reaches integral multiples of the step length, all particle information in a simulation system is traversed, particles meeting the judgment condition are removed, the mass of removed ore particles is obtained, new particles meeting the set condition are added, abnormal particles are processed, and the ore particles are obtained. The residual mass of the ore particles with the particle size set by the system within the simulation time and the mass of the removed ore particles at each moment are obtained, the removal rate of the ore particles at each moment in the simulation process is calculated, the crushing capacity evaluation result of the semi-autogenous mill is obtained, the evaluation calculation time is short, the accuracy is high, and the problem of small particle deposition is effectively solved.

The invention discloses a metal mine production big data intelligent analysis method and device and a medium, and relates to the technical field of intelligent mine information, and the device comprises an acquisition and modeling module, an analysis module, a prediction and optimization module and a visualization module; the data acquisition unit is provided with a vibration sensor, a temperature sensor and a geological pressure sensor, and is used for acquiring mine equipment operation parameters, mineral processing process indexes and geological environment parameters in real time to obtain multi-source data; the data preprocessing unit is used for performing timestamp alignment, missing value compensation, noise elimination and unit normalization processing on the multi-source data to obtain standardized multi-source data; the feature extraction unit adopts a multi-head Transform network, performs space-time modeling and semantic feature fusion on standardized multi-source data, and outputs a tensor embedding vector, the risk identification result is converted into an executable process adjustment strategy, the crossing from passive early warning to active optimization is realized, and the efficiency and the intelligent level are enhanced.

The invention discloses a beneficiation optimization control method and system based on a knowledge graph, and relates to the technical field of mineral processing process control, and the method comprises the steps: collecting and preprocessing beneficiation whole process data, and generating an initial multi-modal data set; space-time process elements are extracted based on the initial multi-modal data set, and an initial beneficiation optimization knowledge graph is constructed; establishing a mineral separation process topological graph, bringing process equipment material topology into a mineral separation optimization knowledge graph, and constructing an evolutionary mineral separation optimization knowledge graph; performing timestamp alignment on the initial multi-modal data set through an evolutionary beneficiation optimization knowledge graph to obtain a time axis aligned multi-modal data set; hierarchical time sequence modeling and cross-modal correlation calculation are carried out on the multi-modal data set with the aligned time axes, and multi-modal time sequence correlation features are generated; and the multi-modal time sequence correlation characteristics are input into the evolution beneficiation optimization knowledge graph for reasoning, and an optimal beneficiation control strategy is obtained.

The invention belongs to the technical field of mineral flotation, and particularly discloses a method for recovering whole-fraction iron lepidolite through combination of multi-stage magnetic separation and synergistic flotation. Comprising a matched compound collecting agent which is composed of sodium dodecenesulfonate, amino acid methyl thiohydracrylate, an amphoteric polyacrylamide polymer, carboxyethylidene diphosphonic acid and polyethylene glycol, and efficient recovery of whole-size-fraction iron lepidolite is achieved by matching with a corresponding magnetic separation-flotation combined process. The compound collecting agent generates static electricity and physical and chemical adsorption on the iron lepidolite through specific groups such as sulfonic acid groups, carboxyl groups, amino groups, acylamino groups and phosphate groups, exerts excellent selectivity and collecting functions, generates a dispersion effect and a chelating flocculation effect on micro-fine-particle iron lepidolite, and well cooperates with multi-stage magnetic separation to recover whole-particle-size iron lepidolite, so that the recovery rate of the whole-particle-size iron lepidolite is increased, and the recovery rate of the whole-particle-size iron lepidolite is increased. And the existing combined beneficiation process of the iron lepidolite is optimized, the cost and the environmental influence are reduced, and technical support is provided for sustainable development of lithium resources.

The invention belongs to the technical field of flocculant adding, and particularly relates to a flocculant adding device of a medium-large mineral separation deep-cone thickener, which comprises a mixing tank, a bottom frame is fixedly mounted at the bottom of the mixing tank, a first storage box and a second storage box are mounted on a guide rod at the top of the bottom frame, and a first pumping pump is fixedly mounted at the top of the first storage box; a second pumping pump is fixedly installed at the top of the second storage box, a feeding assembly is arranged at the bottom of the bottom frame, a driving motor is fixedly installed at the top of the mixing tank, and a driving rod is rotationally arranged in the mixing tank. According to the flocculant adding device of the medium-large mineral separation deep-cone thickener, mixed liquid can conveniently flow to different positions of the mixing tank to be mixed through the spray holes and the movable ring, so that the mixing efficiency of a flocculant is improved, when the flocculant is mixed and prepared, a driving rod rotates to drive a driving wheel to rotate, the position of the movable ring is adjusted, and the flocculant adding effect is improved. Therefore, the mixed liquid can flow to different positions to be mixed, and the mixing efficiency is improved.

The invention relates to the technical field of solid-liquid separation in the mineral separation industry, in particular to a dense overflow solid material recycling device and process, the dense overflow solid material recycling device comprises a plurality of sedimentation tanks, height differences exist among the sedimentation tanks, and a sediment recycling mechanism is arranged in each sedimentation tank and used for collecting and conveying solid materials after sediment; a dissociation mechanism is also arranged in the sedimentation tank and is used for dissociating solid materials; and a separation mechanism is arranged on the extraction mechanism, and solid materials can be conveyed and subjected to solid-liquid separation through vibration. By arranging the sedimentation tank, the sediment recovery mechanism, the extraction mechanism and the separation mechanism, continuous operation can be achieved, and the manual cleaning cost is reduced; the extraction mechanism can realize low-energy-consumption conveying and primary solid-liquid separation, so that subsequent treatment of solid materials is facilitated; and the solid and the liquid can be further separated through the separation mechanism, and the solid can be conveniently recycled in the later period.

The invention relates to the technical field of mineral processing, and particularly provides a combined reagent system for flotation and magnesium reduction of talc-containing copper-molybdenum ore and application of the combined reagent system. The combined reagent system comprises a flotation collecting agent (faint yellow to orange transparent liquid, 40%-50% of active ingredients and less than or equal to 3% of free alkali) with active ingredients in the formula 1 and a flotation depressing agent (light yellow powder, extracellular polysaccharide extract of xanthomonas, the weight-average molecular weight of 1000-1500000 Daltons and rich in hydroxyl, carboxyl and pyruvic acid groups) with a structural formula in the formula 2, and the flotation depressing agent comprises extracellular polysaccharide extract of xanthomonas, the weight-average molecular weight of xanthomonas and the weight-average molecular weight of xanthomonas and is rich in hydroxyl, carboxyl and pyruvic acid groups. Through the synergistic adsorption effect of the combined reagent, the flotation grade and the recovery rate of the copper sulfide molybdenum ore are remarkably improved under the condition that the pH is 8-11. The combined reagent system has the advantages of being high in flotation efficiency, high in selectivity, low in reagent cost, environmentally friendly, high in industrial applicability and the like.

The invention discloses a method for recovering molybdenum from tungsten smelting soda boiling slag through flotation, and relates to the technical field of comprehensive utilization of tungsten smelting resources. Step 2, grading and desliming; step 3, elutriation and reagent removal; 4, potential regulation and control; and fifthly, flotation enrichment is conducted. According to the method, a pre-treatment scheme of ore grinding scrubbing and desliming elutriation is innovatively adopted, a Ca (OH) 2 passivation layer and CaCO3 colloidal precipitate adsorbed on the surface of the ore are removed, fine silt of-15 microns is removed, the inevitable ion cover effect is eliminated, and the pH value of a flotation system is reduced; through an innovative reagent combination and a progressively-decreased reagent system, the overall grade of the concentrate is remarkably improved, and the recovery rate of molybdenum is greatly increased; according to the method, a large amount of acid-base reagents are not introduced, acid-base wastewater is not generated, the process is simple, large-scale treatment can be achieved, closed-loop circulation of mineral separation water can be achieved, wastewater discharge is avoided, the process is environmentally friendly and free of pollution risks, tailings can be directly discharged after soda boiling residues are subjected to harmless treatment, and the environment-friendly treatment cost is low.

The invention discloses a spodumene concentrate resourceful treatment method which comprises the following steps: carrying out wet treatment on spodumene acid clinker to prepare lithium-removed filter residues and leachate; carrying out neutralization treatment and desulfurization treatment on the leachate to obtain a lithium-containing purified solution, gypsum and iron oxide red, and carrying out lithium extraction treatment on the lithium-containing purified solution to obtain a lithium salt and mirabilite; the lithium-removed filter residues are treated through a process combining a beneficiation method and a chemical method, and water glass, nano kaolinite, ceramsite aggregate and tantalum-niobium concentrate are obtained. According to the method, whole-process slag-free production of the spodumene concentrate is achieved, and meanwhile the lithium-containing compound with the high purity and the high quality is obtained; and various valuable products can be obtained.

The invention discloses a beneficiation method for concentrate regrinding reinforced copper-molybdenum mixed rough concentrate magnetic levitation combined separation. The method comprises the following steps: (1) carrying out two-stage magnetic separation on the copper-molybdenum bulk concentrate to obtain a magnetic product and a non-magnetic product; (2) the magnetic products and the non-magnetic products are subjected to particle size control regrinding treatment, so that the copper minerals and the molybdenum minerals are further subjected to monomer dissociation, and agglomeration structures among the minerals are scattered; (3) preferential molybdenum flotation and copper flotation operation is conducted on reground ore pulp of magnetic separation magnetic products, after magnetic separation non-magnetic products are combined, the reground ore pulp is directly subjected to molybdenum flotation operation, an inhibitor, a collecting agent and a foaming agent are added in a segmented mode in the molybdenum flotation operation, and an adjusting agent, a dispersing agent, an activating agent, a collecting agent and a foaming agent are added in a segmented mode in the copper flotation operation; the concentrates obtained through the flotation operation are copper concentrates and molybdenum concentrates. The method improves the grade of the molybdenum concentrate, reduces the copper inclusion amount, stabilizes the product quality, and improves the copper-molybdenum separation efficiency and the recovery rate of copper and molybdenum.

The invention discloses a method for comprehensively recycling valuable components of a decommissioned ternary lithium battery, and relates to the technical field of recycling of valuable components of lithium batteries and mineral processing, and the method comprises the following steps: (1) taking a mixed electrode material of the decommissioned ternary lithium battery as a raw material, uniformly mixing, and pulverizing to obtain a furnace sample; (2) feeding the in-furnace sample into a roasting furnace, and preheating at the temperature of 300-400 DEG C for 15-30 minutes to obtain a pyrolyzed product; (3) feeding the pyrolyzed product into a reduction fluidization chamber, controlling the temperature to be 750-850 DEG C, and carrying out high-temperature phase conversion; (4) carrying out water leaching treatment on a phase conversion product, and enriching and recovering Li from a leaching solution; (5) carrying out wet magnetic separation on the leached product to obtain magnetic concentrate and magnetic tailings; and (6) the magnetic separation tailings are leached through sulfuric acid, and Mn is recycled from the manganese-rich magnetic separation tailings. According to the method disclosed by the invention, the valuable components Li, Co, Ni and Mn of the ternary lithium battery are efficiently recovered, and efficient total recovery of the valuable components of the retired ternary lithium battery is realized.

The invention provides a method and a system for recovering ferrochrome in ferrochrome slag based on particle size separation, and relates to the technical field of metal mineral treatment. The method comprises the following steps: crushing the ferrochrome slag until the particle size is less than or equal to 15mm; the crushed ferrochrome slag is screened into materials with three particle sizes of-15 + 6 mm,-6 + 1 mm and-1 mm; respectively carrying out magnetic separation on the materials of the first particle size fraction and the second particle size fraction to obtain a first magnetic product, a second magnetic product and a non-magnetic product; the materials of the third particle size fraction are ground to the preset fineness, and ground materials are obtained; the ore grinding materials are subjected to gravity separation, and gravity separation products and tailings are obtained; the first magnetic product, the second magnetic product and the reselection product are recycled ferrochrome. Through the combination of crushing, screening, magnetic separation, grinding and reselection processes, high-efficiency recovery of ferrochrome alloy with different particle sizes in ferrochrome slag is realized, the recovery rate of ferrochrome alloy is improved, and good economic benefits and environmental benefits are achieved.

The invention provides a steel ball supplementing control method, device and equipment of a semi-autogenous mill and a storage medium, and relates to the technical field of mineral processing, the method comprises the following steps: obtaining production data of the semi-autogenous mill, and constructing a production database according to the production data; constructing a digital platform according to the production database in combination with a beneficiation knowledge base and an expert system; according to the ore parameters, the steel ball parameters and the operation parameters of the semi-autogenous mill, a steel ball abrasion dynamic model is built; calculating steel ball supplementing parameters of the semi-autogenous mill according to the digital platform steel ball wear dynamic model; constructing a digital twinborn prediction system according to the production data, and adjusting steel ball supplementing parameters by using the digital twinborn prediction system to obtain a steel ball supplementing strategy; and according to the steel ball supplementing strategy, the intelligent ball adding machine is controlled to supplement the steel balls to the semi-autogenous mill. Key parameters of the semi-autogenous mill can be obtained in real time, the number and the period of supplemented balls are dynamically adjusted, and it is ensured that equipment is always in the optimal working state.

The application provides a high-efficiency recovery method for copper in chalcocite-type copper concentrate sulfuric acid roasting and acid leaching residue, and belongs to the technical field of mineral processing.The application recovers sulfide copper minerals and intergrowth of the sulfide copper minerals and cupric ferrite in chalcocite-type copper concentrate sulfuric acid roasting and acid leaching residue through flotation, then recovers cupric ferrite and intergrowth of the cupric ferrite and the sulfide copper minerals in middlings and tailings in the flotation through magnetic separation, and finally recovers superfine cupric ferrite and copper mineral particles completely wrapped by gangue minerals in the tailings in the magnetic separation through chemical dissociation.The application uses the method of combination of flotation, magnetic separation and chemical dissociation, strengthens recovery of the copper in chalcocite-type copper concentrate sulfuric acid roasting and acid leaching residue, and the comprehensive recovery rate can reach 91.18%.

The invention discloses a method for measuring the oxidation rate of silver ore, and relates to the technical field of mineral processing and process mineralogy analysis. The determination method comprises the following steps: preparing and segmenting a sample; silver grade calibration and reselection enrichment are carried out, and products with different mineralogical characteristics are obtained; carrying out automatic mineralogical analysis to obtain the type, content and dissemination characteristics of silver minerals; chemical leaching correction coefficient determination, wherein phase state distribution of silver is obtained through stepped chemical leaching, and the correction coefficient is calculated; determining a gangue wrapping correction coefficient, analyzing the silver content of the residue and calculating the correction coefficient; and finally, calculating the silver ore oxidation rate based on the automatic mineralogy analysis data and the correction coefficient. According to the method, through multi-technology fusion and data correction, the accuracy and reliability of measurement of the oxidation rate of the silver ore with low silver mineral content and uneven distribution are remarkably improved, and accurate data support is provided for formulation of a mineral separation process.

The invention belongs to the technical field of lithium-containing mineral treatment, and relates to a method for selectively extracting lithium from lepidolite. The method mainly comprises the following steps: carrying out roasting defluorination treatment on lepidolite, and grinding to obtain a lepidolite defluorination roasting material in which the mass content of lithium is 0.8-1.5% and the mass content of aluminum is 20-30%; carrying out acid leaching treatment on the lepidolite defluorination roasting material by using a first acid solution, and carrying out solid-liquid separation to obtain a leaching solution and leaching residues; adjusting the pH value of the leachate to 2-3 by adopting a neutralizer, and then adding a mixture of the neutralizer and benzoic acid into the leachate to obtain aluminum benzoate precipitate and aluminum-removed liquid; adding the aluminum benzoate precipitate into a second acid solution, dissolving, and carrying out solid-liquid separation to obtain regenerated benzoic acid and an aluminum-rich solution; and cooling the aluminum-rich solution to obtain an aluminum salt and a recyclable acid solution. According to the method, efficient separation of lithium and aluminum in lepidolite can be achieved, benzoic acid and the acid solution can be recycled, and the lithium extraction cost can be effectively reduced.