2365 results about "Ore concentrate" patented technology

The invention provides a treatment method of copper-nickel concentrate rich in platinum group metals, which comprises the following steps: feeding the copper-nickel concentrate rich in platinum group metals and a first flux into a smelting furnace, and introducing first oxygen-enriched gas for smelting; copper matte and a second flux are continuously fed into a first converting furnace, and second oxygen-enriched gas is continuously introduced for first converting; raw copper and a third flux are fed into the oxygen inclined blowing rotary converter, and oxygen is introduced for second blowing; the crude copper is fed into an anode refining furnace, and air and a first reducing agent are introduced for fire refining; casting the copper liquid into an anode plate, and carrying out electrolytic refining on the anode plate; feeding the first converting slag, the second converting slag, a second reducing agent and a vulcanizing agent into a dilution electric furnace for slag dilution to obtain low-nickel matte and dilution slag; and the low-nickel matte is fed into a third converting furnace, air or oxygen-enriched air is introduced for third converting, and the problem that the recovery rate of nickel metal elements and platinum group metals in the copper-nickel concentrate rich in the platinum group metals is low is solved.

The invention discloses a method for low-carbon preparation of a high-reactivity blast furnace burden from magnetite concentrate and the blast furnace burden, and belongs to the technical field of ferrous metallurgy. According to the method, an iron-containing raw material, an organic-inorganic composite binder, a multifunctional additive and water are sequentially subjected to uniform mixing, high-pressure double-roller forming and consolidation, and the finished product cold pressing block is obtained. According to the method, the strength and reducibility of the cold pressing block can be remarkably improved by optimizing the particle size composition of the raw materials and adding the multifunctional additive, the technological process is simple, a high-temperature process is not needed, and carbon emission is low.

The invention provides a treatment method for low-grade multi-metal gold concentrate, and relates to the technical field of comprehensive utilization of minerals. According to the treatment method of the low-grade multi-metal gold concentrate, most of iron and copper form iron-copper matte through pyrogenic smelting, meanwhile, gold is captured into the iron-copper matte, then iron-copper matte powder is obtained after water quenching and ball milling, the iron-copper matte powder is subjected to oxidation ammonia leaching, copper in the iron-copper matte is extracted, and the iron-copper matte powder is subjected to oxidation ammonia leaching to obtain the low-grade multi-metal gold concentrate. The obtained copper-containing ammonia leaching liquid is subjected to a traditional extraction-reverse extraction-electrodeposition process to obtain an electrodeposited copper product, ammonia leaching residues obtained after copper extraction are subjected to cyanidation leaching, gold in the ammonia leaching residues is extracted, cyanidation liquid is subjected to a traditional gold extraction process to obtain a gold product, the cyanidation tailings mainly comprise iron sulfide, the content of iron and sulfur in the tailings is high, and the content of sulfur in the tailings is high. And the subsequent cinder can be directly sold as an iron-making raw material. The amount of iron-silicon slag generated by the method is extremely low, and compared with a traditional molten pool smelting method, the comprehensive utilization rate of iron in the multi-metal gold concentrate is greatly increased.

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 discloses a quality-divided treatment and recycling method for lead-zinc beneficiation wastewater, and belongs to the technical field of beneficiation wastewater treatment.The method comprises the steps that beneficiation tail water is introduced into a Fenton reaction tank, a catalyst is added firstly, then hydrogen peroxide is added, a Fenton oxidation reaction is conducted, after the Fenton oxidation reaction is finished, the beneficiation tail water is introduced into a coagulation reaction tank, caustic soda liquid is added, and the mixture is stirred and mixed uniformly; adding a precipitating agent, a flocculating agent and a stabilizing agent, and flocculating and settling the precipitate; introducing the beneficiation tail water added with the treatment agent into a honeycomb inclined tube sedimentation tank, further flocculating and settling, then returning flocculated precipitates in a bottom tank to a coagulation reaction tank, and discharging redundant bottom mud into a tailing pond; and settled clear water enters a clear water tank and is used as production water for ore grinding classification and flotation operation. According to the invention, through quality-divided treatment-quality-divided recycling of the beneficiation wastewater, it is ensured that the beneficiation tail water meets the requirements of ore grinding and flotation production indexes, the treatment cost of concentrate overflow water and filtered water is reduced, and the purpose of 100% recycling of the beneficiation wastewater after quality-divided treatment is achieved.

The invention belongs to the technical field of mine ore washing equipment, and relates to improvement of the production efficiency of an elutriation machine, in particular to an elutriation system for efficient iron ore washing and separation and a control method thereof.The elutriation system comprises a concentrate pulp mixer, an overflow groove, an elutriation barrel, a supporting platform, an ore washing water path and a control system; the concentrate pulp mixer is arranged above the elutriation barrel, the overflow groove is formed in the lower portion outside the concentrate pulp mixer and is in an inclined table shape, the tailing outlet is formed in the bottom of the inclined table, the middle of the interior of the overflow groove is connected with the elutriation barrel, a middle barrel body of the elutriation barrel is divided into an inner barrel body and an outer barrel body, and multiple sets of magnet exciting coils are arranged between the inner barrel body and the outer barrel body. The lower part of the inner cylinder is connected with an inverted-cone cylinder; a stirring impeller is arranged below the concentrate pulp mixer; the lower part of the elutriation barrel is filled with direct-flow water and rotational flow water through an ore washing water path; the system automatically recognizes working condition changes according to the ore feeding property, the material amount, field data and database set values, the optimal operation mode is selected, a magnetic field, an ore removal valve, a water supply valve and the like are controlled, efficient and intelligent separation of iron ore powder is achieved, and the optimal ore washing effect is achieved.

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 discloses a magnetic separation-flotation combined stepped deep iron removal method for granite tailings. According to the method, after granite tailings are subjected to ore grinding treatment, magnetic separation impurity removal, black and white mica ore removal through reverse flotation and fine ferrodolomite ore removal through reverse flotation are conducted in sequence, after the pH of reverse flotation tailings is adjusted, fluoride-free and acid-free separation is conducted, low-iron quartz concentrate and feldspar rough concentrate are obtained, the feldspar rough concentrate is subjected to regrinding and secondary magnetic separation impurity removal, and the low-iron quartz concentrate and the feldspar rough concentrate are obtained. And low-iron feldspar concentrate is obtained. According to the method, no strong acid is involved in the whole process, the technical problem that in the prior art, strong acid is introduced in quartz and feldspar flotation, and consequently waste water and waste liquid pollution is caused is fundamentally solved, and efficient and deep removal of iron impurities in the granite tailings is achieved through the magnetic separation pre-enrichment-three-section flotation separation-step deep iron removal technology. And the overall removal efficiency of the iron impurities is remarkably improved, and comprehensive utilization of granite tailings resources is achieved.

The system is formed by combining and connecting a coarse crusher (1), an ore washing sieve (2), a large dry magnetic separator (3), a wet magnetic separation preselector (4), a fine crusher (5), a dry magnetic separation scavenging machine (6), an aggregate screening machine (7), a preselected concentrate dewatering sieve (8), a preselected tailing dewatering sieve (9), a preselected concentrate concentration magnetic separator (10) and a preselected concentrate filter (11). An ore discharge port of the coarse crusher (1) is connected with a feeding end at the upper part of the ore washing sieve (2), an oversize discharge port of the ore washing sieve (2) is connected with a feeding belt of the large dry magnetic separator (3), and an undersize discharge port of the ore washing sieve (2) is connected with an ore feed port of the wet magnetic preselector (4). Slurry on the surface of high-silt-content raw ore is washed off through screening and ore washing operation, and the ore blocking condition is reduced; dry separation and wet separation processes are combined, a large number of tailings are thrown out in advance, meanwhile, various building material products are produced, and the resource utilization rate is increased.

The invention relates to the technical field of fluorite ore beneficiation, discloses a fluorite ore flotation composite collecting agent and a preparation method and application thereof, and aims to solve the problems that an existing collecting agent is limited in applicability, insufficient in selectivity, poor in environmental stability and the like and is difficult to deal with separation of fluorite ore containing various impurities or under complex working conditions. The composite collecting agent is composed of dehydroabietylamine, sodium oleoyl sarcosinate, sodium silicate-citric acid composite salt, ethylene glycol butyl ether and a sodium carbonate-sodium bicarbonate buffer pair, all the components have a synergistic effect, dehydroabietylamine provides selective collecting and fine particle agglomeration functions, sodium oleoyl sarcosinate enhances adsorption stability, the composite salt inhibits gangue in a targeted mode, and therefore the adsorption efficiency is improved. Buffer pairs and ethylene glycol butyl ether guarantee the environmental adaptability of a system. The collecting agent can adapt to various fluorite ores with high sulfur, high silicon, low temperature and the like, can stably play a role under different water quality and working conditions, realizes efficient separation of fluorite and impurities, improves the separation efficiency and the concentrate quality, and is flexible in preparation process and convenient for industrial application.

The present invention discloses an ore sorting system and method based on deep learning. The method includes: performing particle size grading and ore washing on the raw ore through several layers of vibrating screens to obtain preprocessed graded ore, and collecting image data and hyperspectral data of the preprocessed graded ore; using a first network and a second network constructed based on deep learning algorithms to extract the surface features of the image data and the spectral features of the hyperspectral data respectively, and fusing the surface features and the spectral features and inputting them into a classification network to obtain the ore type and the main components of the ore; calculating jet parameters based on the conveyor belt speed, the ore quality, and the air density, and determining the sorting instruction for the concentrate, and performing ore sorting according to the jet parameters and the sorting instruction. The present invention relates to the technical field of ores, and solves the technical problems of low processing efficiency and insufficient sorting accuracy of existing ore sorting methods.

The invention provides a clay type lithium ore-lepidolite-spodumene continuous induction suspension cascade roasting lithium extraction method, which comprises the following steps: mixing clay type lithium ore and lepidolite concentrate for pelletizing, then mixing with spodumene concentrate to obtain a clay type lithium ore-lepidolite-spodumene mixed material, and carrying out continuous induction suspension cascade roasting on the clay type lithium ore-lepidolite-spodumene mixed material to obtain the clay type lithium ore-lepidolite-spodumene powder. And carrying out gradient high-temperature roasting, low-temperature acidizing roasting and water leaching to obtain a lithium leaching solution. The leaching rate of lithium in the lithium leachate obtained through the lithium extraction method is larger than or equal to 90%, the problem that existing spodumene roasting crystal transformation temperature is high can be effectively solved, meanwhile, the extraction and utilization rate of lepidolite and clay type lithium ore is increased, integrated extraction and utilization of lithium resources are achieved, and the method is simple in process, low in energy consumption, low in cost, easy to industrialize and suitable for industrial production. Good application prospects are realized.

The invention discloses a normal-temperature efficient recovery method for low-grade tungsten in gold, antimony and tungsten multi-metal symbiotic ore. The method comprises the steps that raw ore is ground and then subjected to shaking table reselection, reselected concentrate, reselected middling and reselected tailings are obtained, foam flotation is conducted on the reselected middling, sulfide ore is floated out, coarse-grain tungsten minerals are recycled through reselection of the flotation tailings, ore grinding is conducted on the reselected tailings, gold and antimony bulk flotation is conducted, then scheelite flotation and tungsten concentrate flotation are conducted under the action of a combined collecting agent, and finally tungsten concentrate is obtained. According to the method, aiming at the characteristic that the granularity of the tungsten mineral in the gold-antimony-tungsten symbiotic ore is uneven in thickness distribution, a proper ore grinding separation process and proper ore grinding fineness are selected, the tungsten mineral is prevented from being over-crushed, and underground wastewater is reasonably utilized, so that the use amount of clear water is effectively reduced, and meanwhile, the underground wastewater is recycled; furthermore, an ore pulp heating process is omitted in the tungsten ore concentration stage, the fuel cost is greatly reduced, and therefore the production cost is greatly reduced on the premise that the tungsten concentrate recovery rate is guaranteed.

The invention relates to the technical field of lead-zinc ore beneficiation, in particular to a lead-zinc ore dense medium grading selection-flotation combined separation system and a separation process, and the system comprises a dense medium separation system and a flotation system. The dense medium separation system comprises a crushing and screening unit, a dense medium coarse fraction separation unit, a dense medium fine fraction separation unit and a fine ore water treatment unit, an outlet of the crushing and screening unit is divided into a coarse fraction outlet, a fine fraction outlet and a fine ore outlet, the coarse fraction outlet is connected with the dense medium coarse fraction separation unit, and the fine fraction outlet is connected with the fine ore water treatment unit; the fine fraction outlet is connected with the dense medium fine fraction separation system, the fine ore outlet is connected with the fine ore water treatment unit, and a coarse fraction gravity concentration concentrate outlet of the dense medium coarse fraction separation unit, a fine fraction gravity concentration concentrate outlet of the dense medium fine fraction separation unit and a concentrated fine ore outlet of the fine ore water treatment unit are connected with the flotation system. The method has the advantages of high economic benefit, low production cost, energy conservation, environment friendliness and the like, and the lead-zinc ore dressing efficiency and the metal recovery rate are effectively improved.

The invention provides a beneficiation method for high-sulfur copper ore containing mud and pyrrhotite, and belongs to the technical field of ore separation processes. According to the method, the mineral processing technology of copper rapid flotation, enhanced flotation, copper rough concentrate differential regrinding, step-by-step concentration, copper tail sulfur flotation and sulfur tail magnetic separation and a CD-ND + CD-SD combined inhibitor are adopted for synchronously inhibiting argillaceous gangue and pyrite, ethionine ester, isopropyl xanthate and ethionine xanthate collect copper minerals step by step, interference of the argillaceous gangue to the preferential copper flotation process is reduced, and the copper flotation efficiency is improved. The effective inhibition on sulfur is realized under the condition of relatively low pH. The copper and sulfur separation technical scheme combining low-alkali-acid-free flotation and magnetic flotation is constructed, interference of argillaceous gangue on the sulfide ore flotation process is reasonably and effectively controlled, the technological process is short and stable, the copper and sulfur separation index is excellent, the copper and sulfur ore separation recovery rate and grade index are improved, and the method is suitable for industrial production. The method effectively solves the problem of clean and efficient beneficiation and recovery of high-sulfur copper ore containing mud pyrrhotite, and provides a new effective method for clean and efficient recovery of similar copper and sulfur resources.

The invention discloses a leucite mineral separation system and process, and relates to the technical field of mineral separation, and the separation system comprises a magnetic field generation mechanism, a conveying assembly, a scraper, a guide plate, a tailing outlet and a concentrate outlet. The magnetic field generating mechanism is used for generating magnetic fields; the conveying assembly is used for conveying concentrate in the forward direction and conveying tailings in the reverse direction, the scraping plate is used for scraping the concentrate from the conveying belt, the flow guide plate is used for guiding flow of the concentrate so as to classify the concentrate, and therefore the purpose of conducting multi-stage classification treatment at a time can be achieved, and the classification efficiency is improved.

The invention provides a molybdenum mineral content measuring method, and belongs to the field of process mineralogy, and the method comprises the following steps: carrying out ore grinding, ore washing and desliming treatment on a to-be-measured sample to obtain slurry and ore washing concentrate; the ore washing concentrate is subjected to gravity separation, and gravity separation concentrate and gravity separation tailings are obtained through separation; mixing the slime and the gravity concentrate to obtain a mixed sample, and performing molybdenum phase analysis to obtain the content of molybdenum oxide; an automatic mineralogical analysis sample of the mixed sample and an automatic mineralogical analysis sample of the gravity separation tailings are prepared respectively, automatic mineralogical analysis is carried out, and a molybdenite content correction coefficient and a molybdenum oxide content correction coefficient are calculated; and calculating the content of various molybdenum minerals in the to-be-detected sample in combination with the correction coefficient and the mineral content data. By optimizing the sample preparation process, molybdenite oxidation is reduced, and the mineral recognition accuracy is improved. Molybdenum oxide and molybdenum sulfide are treated separately, different correction processes are adopted, and the accuracy of ore molybdenum mineral measurement is improved in a targeted mode.

A beneficiation method for improving a grade of a magnesium-containing copper sulfide ore concentrate includes: crushing and grinding an ore to a fineness degree allowing 55% to 65% of particles to pass through a 0.074 mm sieve, adding an adjusting agent lime, collecting agents butylxanthate and kerosene, and a foaming agent methyl isobutyl carbinol (MIBC) to obtain a copper-molybdenum-sulfur mixed concentrate; re-grinding the copper-molybdenum-sulfur mixed concentrate to a fineness degree allowing 75% to 82% of particles to pass through a 0.048 mm sieve, adding lime, a magnesium-containing silicate inhibitor, a collecting agent 1, and MIBC to obtain a copper-molybdenum mixed concentrate; and adding sodium sulfide, kerosene, and MIBC to the copper-molybdenum mixed concentrate to obtain a high-grade copper concentrate. The beneficiation method adopts mixed flotation of copper-molybdenum, regrinding for separating copper and molybdenum from sulfur, and magnesium removal from a copper concentrate to allow quality improvement for the copper concentrate.

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 method for recovering platinum and palladium from high-cobalt nickel-containing carbonylation slag, and relates to the technical field of non-ferrous metal carbonylation metallurgy, the method comprises the following steps: S1, hydrogen reduction and activation; s2, feeding into a high-pressure carbonylation reactor; and S3, efficient carbonylation. According to the method, the carbonylation slag is subjected to hydrogen reduction activation treatment, nickel protoxide and cobalt oxide are changed into simple substance nickel, the simple substance nickel is fed into a carbonylation reactor for carbonylation under the protection of reducing gas or inert gas after activation treatment, 95% of Ni, 85% of Fe and 80% of Co are carbonylated to enter a gas phase after carbonylation, bonding of cobalt and a platinum solid solution is broken through carbonylation, and the nickel-cobalt-cobalt-cobalt-cobalt alloy is obtained. Nickel protoxide is difficult to dissolve in various strong acids and oxidizing acids, and a foundation is laid for further separation of base metals and non-metallic element sulfur from precious metals to produce high-grade platinum concentrate.

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 present invention discloses a process for efficiently separating bastnasite and monazite from mixed rare earth concentrates, comprising the following steps: S1: The ore sample is subjected to primary centrifugal gravity separation for roughing. The gravity separation concentrate is finely ground, and after grinding, the gravity separation concentrate and the gravity separation tailings are mixed and then enter the flotation operation; S2: Water is added to adjust the pulp concentration and pH value, a sulfate composite inhibitor is added, a hydroxamic acid composite collector is added, and octanoic acid is added as a foaming agent for roughing to obtain a bastnasite roughing concentrate and a bastnasite roughing tailings; S3: The pH value of the bastnasite roughing concentrate pulp is adjusted, the same composite inhibitor and collector as those in the roughing are added, and two-stage cleaning is carried out to obtain a bastnasite concentrate; S4: The roughing tailings are finely ground, and scavenging is carried out after grinding; the pH value of the bastnasite roughing concentrate pulp is adjusted, the same composite inhibitor and collector as those in the roughing are added, and one-stage scavenging is carried out to obtain a monazite concentrate. The process of the present invention is simple and has less reagent consumption.

The invention belongs to the field of metallurgy, and particularly relates to a method for comprehensively recovering iron, vanadium, titanium, scandium and gallium through cooperation of vanadium titano-magnetite and red mud, which comprises the following steps: a) mixing vanadium titano-magnetite concentrate powder and red mud powder, roasting, leaching in water, and carrying out solid-liquid separation to obtain leached residues and leached liquid; b) mixing the leachate with a precipitant to precipitate vanadium, and carrying out solid-liquid separation to obtain vanadium-rich slag and vanadium-precipitated clear liquid; dissolving the vanadium-rich slag in a sulfuric acid solution, mixing the vanadium-rich slag with ammonium salt to react, carrying out solid-liquid separation, and roasting the obtained solid product ammonium polyvanadate to obtain V2O5; resin is used for adsorbing and desorbing gallium ions in the vanadium precipitation clear liquid, the pH of desorption liquid is adjusted to be alkaline, then electrolysis is conducted, and crude gallium is obtained; c) washing and drying the leaching residues to prepare pellets; after the pellets are pre-reduced, a carbonaceous reducing agent is mixed, melt separation treatment is carried out, and scandium-containing high-titanium slag and molten iron are obtained; and Ti and Sc in the scandium-containing high titanium slag are recycled. The method has the advantages of simple process, cleanness, high efficiency and the like.

The invention provides a high-selectivity flotation method for micro-fine particle lepidolite containing rubidium and cesium, which comprises the following steps: levigating raw lepidolite ore, and desliming to obtain a flotation material and slime; adding sodium hexametaphosphate and a collecting agent HT8-01 into the flotation material, stirring, and roughing to obtain lepidolite rough concentrate and flotation tailings I; a collecting agent HT8-01 is added into the flotation tailings I for two times of scavenging, flotation tailings and two scavenging middlings are obtained, and the scavenging middlings are sequentially returned to the upper layer for operation; sodium hexametaphosphate is added into the lepidolite rough concentrate for two times of concentration, lepidolite concentrate and two concentrated middlings are obtained, and the concentrated middlings are sequentially returned to the upper layer for operation; the collecting agent HT8-01 is obtained by mixing octadecylamine and sodium dioctyl sulfosuccinate according to the mass ratio of 5: 3. According to the method, the separation effect of the rubidium-cesium-lithium-containing mica and gangue minerals such as quartz and feldspar is improved, the problems that foam is too stable, the viscosity is too high and the size is too large are solved, and high-selectivity separation of the micro-fine-particle rubidium-cesium-lithium-containing mica is achieved.

The invention belongs to the technical field of rare earth ore concentrate treatment, and particularly relates to a method for recycling fluorine, phosphorus and rare earth through mixed rare earth ore concentrate hydrochloric acid leaching and two-step alkaline decomposition. The method comprises the following steps: mixing hydrochloric acid and mixed rare earth concentrate, reacting and leaching to obtain acid leached mixed ore and an acidic rare earth chloride solution; uniformly stirring the acid-leached mixed ore and a sodium hydroxide solution A, heating for reaction, adding water for washing, filtering to obtain a first-step alkali cake and a first-step alkali liquor, and concentrating the first-step alkali liquor to obtain sodium fluoride; uniformly stirring the first-step alkali cake and a sodium hydroxide solution B, and treating to obtain a second-step alkali cake and a second-step alkali solution; treating the two-step alkali liquor to obtain trisodium phosphate dodecahydrate; and putting the two-step alkali cake into an acidic rare earth chloride solution, and treating to obtain rare earth chloride feed liquid. The method for recycling fluorine, phosphorus and rare earth through hydrochloric acid leaching and two-step alkaline decomposition of the mixed rare earth concentrate has the advantages of being low in production cost, small in three-waste generation amount, easy to operate and high in rare earth, fluorine and phosphorus recycling rate.

The present invention relates to a production expert system-based iron ore blending optimization method. The method comprises: firstly, performing data enhancement on historical ore blending and beneficiation data by means of an improved generative adversarial network; then, establishing a case library, and by means of a case retrieval method, establishing a relational model between blended ore properties and ore concentrate grades on the basis of the historical ore blending and beneficiation data and expert experience; then, on the basis of material balance, establishing a blended ore property prediction mechanism model to realize blended ore property estimation after ore blending; and finally, by taking an optimal ore beneficiation concentrate grade and a maximum difficult-to-beneficiate ore use amount as optimization objectives, determining constraints on the basis of actual working conditions, obtaining a set of ore blending proportion non-inferior solutions by means of a multi-objective grey wolf algorithm, and deciding an optimal solution by means of a TOPSIS algorithm. The present invention has the following advantages: while ensuring the quality of ore beneficiation products, reasonable ore blending proportions are calculated, the use amount of difficult-to-beneficiate ores is increased, the sustainable mining capacity of mines is improved while ensuring the mining and beneficiation benefits, and the invention has universal applicability.

The invention discloses a method for enriching and recovering germanium from an indium raffinate obtained by zinc hydrometallurgy by using fine zinc powder, which comprises the following steps: first-stage enrichment: adding germanium precipitation slag into the indium raffinate for reaction, then adding fine zinc powder to enrich germanium, and filtering to obtain an enriched solution and germanium concentrate after the enrichment is completed; wherein the germanium content in the indium raffinate is 50 mg / L-300 mg / L, and the adding amount of the fine zinc powder is 0.92-0.98 times of the theoretical amount of the required fine zinc powder for completely neutralizing sulfuric acid in the indium raffinate; fine zinc powder is added into the enriched liquid for germanium precipitation, the final pH is controlled to be 5.0-5.3, and germanium precipitation liquid and germanium precipitation residues are obtained through filtering; wherein the germanium precipitation slag is returned to the indium raffinate, and the germanium precipitation liquid enters a zinc returning system. According to the method, the fine zinc powder is used as a raw material for enriching and recovering germanium in the indium raffinate, so that the recovery and precipitation rate of germanium in the indium raffinate exceeds 98%, the content of germanium in germanium concentrate reaches 15%, the content of germanium in germanium precipitation liquid is smaller than or equal to 5 mg / L, and the phenomenon of zinc electrolysis plate burning caused by the fact that the germanium precipitation liquid enters a zinc return system is avoided.

This invention discloses a method for the efficient treatment and recovery of copper and molybdenum from high-copper-molybdenum concentrate. The method involves pre-treating low-grade high-copper-molybdenum concentrate with oxygen-pressure water leaching to remove copper. The resulting low-copper-molybdenum concentrate is then processed through oxidative roasting, alkaline leaching, extraction, and evaporation crystallization to prepare ammonium molybdate. The copper-removing solution is then subjected to synergistic extraction and stepwise back-extraction to recover copper and molybdenum. This method not only achieves efficient removal of copper from the high-copper-molybdenum concentrate, avoiding the impact of copper on molybdenum recovery and ammonium molybdate preparation, but also innovatively employs a synergistic extraction and stepwise back-extraction method to separately enrich and recover copper and molybdenum. Matching this with an electrowinning process achieves high-value copper recovery. Simultaneously, the acidic copper extraction residue and the alkaline molybdenum extraction residue are synergistically neutralized, saving reagent costs.

This invention discloses a method for preparing high-reactivity blast furnace charge from magnetite concentrate with low carbon content, and the blast furnace charge itself, belonging to the field of iron and steel metallurgical technology. The method involves sequentially mixing iron-containing raw materials with an organic-inorganic composite binder, multifunctional additives, and water, followed by high-pressure roller molding and solidification to obtain the finished cold-pressed briquettes. By optimizing the particle size distribution of the raw materials and adding multifunctional additives, this method can significantly improve the strength and reducibility of the cold-pressed briquettes. The process is simple, requires no high-temperature treatment, and has low carbon emissions.