33 results about "Jarosite" patented technology

The invention relates to the technical field of resource recovery and metallurgy, and discloses a method for separating high-purity metal from neodymium-iron-boron alloy waste, which comprises the following steps: by taking the neodymium-iron-boron alloy waste as an anode and an inert material as a cathode, oxidizing and dissolving Nd, Dy, Pr, Co and Fe into electrolyte by adopting constant-voltage electrolysis, and separating out part of Fe at the cathode to obtain high-purity iron; adding sodium sulfate into the electrolysis tail liquid, adjusting the pH value, and filtering to obtain sodium sulfate double salt precipitate of rare earth and filtrate; h2O2 is added into the filtrate, sodium jarosite is obtained through filtration by adjusting the pH value, NH4HCO3 is added into the iron-removed filtrate to precipitate CoCO3, and the tail liquid can be directly and repeatedly used in the electrolysis process; the rare earth sodium sulfate double salt precipitate is sequentially subjected to hydrochloric acid dissolution, two-step extraction, precipitation and roasting, and Dy, Nd and Pr oxides are obtained respectively. Comprehensive recovery of metal is achieved through the processes of electrolysis, extraction, precipitation, roasting and the like, and the method has the advantages of being simple in process, high in metal purity, low in material consumption and energy consumption, free of pollution and easy to industrialize.

The invention discloses a method for synchronously removing impurities in an efficient lithium extraction process of clay type lithium ores, and belongs to the technical field of comprehensive utilization of clay type lithium ores. Comprising the following steps: mechanically activating clay type lithium ore to obtain an activated material; a ferric sulfate solution is added into the activated material for ion exchange leaching, sulfuric acid is added in the leaching process to adjust the pH value of the system, impurity elements such as potassium and iron in a leaching solution are synchronously removed according to the jarosite principle, and a lithium-rich solution and filter residues containing jarosite are obtained; and performing concentration / lithium precipitation on the lithium-rich solution to obtain a high-purity lithium carbonate product. According to the method, synchronous removal of impurity elements is realized on the premise of efficiently leaching valuable metal lithium. The method has the advantages of being simple in process, easy and convenient to operate, environmentally friendly and the like, and meanwhile has good industrialization prospects.

The invention discloses a method for precipitating iron through ultrasonic enhanced oxidation, and belongs to the technical field of hydrometallurgy. The method comprises the following steps: performing ultrasonic treatment on a mixed system of an iron-containing zinc sulfate solution and an oxidizing agent under an acidic condition, efficiently catalyzing ferrous ions (Fe < 2 + >) to be oxidized into ferric ions (Fe < 3 + >) by utilizing an ultrasonic cavitation effect, and promoting the ferric ions to be stably precipitated in a goethite (alpha-FeOOH) form; after the reaction is completed, carrying out solid-liquid separation to obtain a low-iron zinc sulfate solution and goethite slag; compared with a traditional jarosite method and a hematite method, the method has the advantages that exogenous cations such as potassium and sodium do not need to be introduced, a high-temperature and high-pressure environment is not needed, and the oxidation efficiency can be remarkably improved and the goethite crystal form conversion can be regulated and controlled only based on the ultrasonic cavitation effect, so that the consumption of an oxidizing agent and the zinc content in the slag are effectively reduced; meanwhile, the iron grade and the filtering performance of an iron precipitation product are improved; the method is suitable for various oxidants, is high in process adaptability, has the advantages of high efficiency, greenness and economy, and has wide popularization and application prospects in the field of zinc smelting.

The invention discloses a method for treating zinc smelting jarosite slag, which comprises the following steps: uniformly mixing the zinc smelting jarosite slag with biochar and calcium oxide source solid waste, roasting, and reducing an iron compound in the zinc smelting jarosite slag by using reducing gases such as H2, CO and CH4 generated by pyrolysis of the biochar, thereby obtaining the zinc smelting jarosite slag. And sulfur compounds in the iron vitriol slag are fixed through the added calcium oxide source solid waste to generate calcium sulfate, then air is introduced for continuous roasting, iron powder obtained through reduction is oxidized into ferroferric oxide, and finally ferroferric oxide powder is obtained through magnetic separation. The method not only is low in energy consumption, but also can reduce emission of greenhouse gas CO2 generated by incineration treatment of the biomass raw materials and release of sulfides in the iron vitriol slag.

A method for recovery of metals from Jarosite waste for its effective utilization wherein, the treatment of nitric acid to jarosite waste extracts the nitrates of lead, cadmium, iron, copper, nickel, zinc, aluminum, manganese, cobalt, magnesium and calcium in the filtrate; the treatment of sulfuric acid to the residue obtained from step (a) extracts the metal in the form of ferrous sulfate, aluminum sulfate, zinc sulfate and calcium sulfate in the filtrate; and the treatment of alkali to the residue obtained from step (a) extracts the metal in the form of sodium silicate and sodium aluminate in the filtrate. The silver present in the Jarosite waste as sulfate / silicate is not extracted in nitric acid, sulfuric acid or alkali. Thus, the remaining residue is enriched with silver concentration to at least 2000 ppm, where silver can be easily recoverable and has good commercial value.

The utility model belongs to the technical field of pumps, and discloses a corrosion-resistant and wear-resistant jarosite slag underflow pump with a protective plate, which aims to solve the technical problems existing in the jarosite slag underflow pump in the prior art, and comprises a pump shell, a pump outlet arranged on the pump shell, a pump cover arranged on one side of the pump shell, a pump inlet arranged on the pump cover, and a bearing box arranged on the other side of the pump shell, a pump shaft is arranged in the pump shell, an impeller is further arranged in the pump shell and installed at one end of the pump shell, polyethylene linings are arranged in the pump shell and the pump cover, a front protection plate is arranged at the position, close to a pump inlet, in the pump shell and the pump cover, guide vanes are arranged on the front protection plate in the circumferential direction, the front protection plate is matched with the impeller, and a rear protection plate is arranged on the side, close to a bearing box, in the impeller. The pump shell and the pump cover adopt the cast iron pump shell, the pump cover and the polyethylene lining structure, and the corrosion-resistant and wear-resistant dual-phase steel protection plate is arranged, so that plastic lining layers at easy-to-wear parts in the pump shell and the pump cover can be protected from being worn, the service life of the pump shell and the pump cover is prolonged, and the use cost is reduced.

The present invention discloses a method for selectively removing sodium and potassium from a lithium-sodium-potassium solution based on seed induction. The method is to adjust the pH of the solution containing lithium, sodium, and potassium to acidic, and then sequentially add jarosite seeds and an iron-based sodium and potassium remover to react, followed by solid-liquid separation to obtain sodium and potassium precipitates and a lithium solution. By adding jarosite seeds in the present invention, the temperature at which the sodium and potassium precipitation reaction occurs can be significantly reduced, the loss rate of lithium can be decreased, and energy consumption can be saved. The jarosite and potassium jarosite generated during the sodium and potassium removal process can be recycled as seeds, and can also be used as a potential substitute for building materials and a wastewater adsorption material, realizing the efficient selective separation of lithium, sodium, and potassium while also achieving the resource utilization of the precipitate. The technological process of the present invention is simple, environmentally friendly, helps to reduce the influence of impurity elements with similar properties on the product purity during the production of lithium salts from lithium ores, and helps to reduce the lithium loss rate.

The invention discloses a composite soil conditioner, which is prepared from the following ingredients in parts by weight: 30 to 40 parts of calcium superphosphate, 20 to 25 parts of powdery humic acid, 20 to 25 parts of fulvic acid metal complexes, 10 to 25 parts of jarosite and 5 to 8 parts of lignosulfonate. The invention also provides a preparation method and application of the composite soil conditioner. The invention provides a composite soil conditioner and a preparation method and application thereof, jarosite is introduced as a potash fertilizer slow-release carrier, lignosulfonate is added as a bonding and dispersion medium, the composite soil conditioner can realize continuous release of potassium ions, and meanwhile, the potassium ions can be continuously released. After the potassium is released, a residual mineral skeleton and calcium ions and organic matters in the soil generate a cementation effect to jointly promote the formation of a water-stable aggregate structure, so that the synergistic improvement of potassium slow-release supply and soil structure construction is realized.

The application discloses a galena combined inhibitor and a use method thereof, and the combined inhibitor comprises iron sulfate, sodium nitrate and jarosite, and the mass ratio of the amount of the iron sulfate, the sodium nitrate and the jarosite is 20:(4-10):(1-2). The combined inhibitor can be applied to separation of copper-lead mixed concentrate to realize lead inhibition and copper floating, and the combined inhibitor does not need to be removed. In an acid medium, after the combined inhibitor acts, not only can the combined inhibitor decompose the adsorbed reagent on the surface of the copper-lead mixed concentrate, but also can promote the galena surface to be oxidized to generate hydrophilic PbSO4 and PbO, while the chalcopyrite surface is oxidized to generate hydrophobic elemental sulfur (S 0 ), thereby expanding the floatability difference between the copper-lead sulfide, the jarosite is selectively adsorbed on the surface of the galena, further reducing floatability of the lead, and improving the copper-lead separation efficiency. The copper concentrate and the lead concentrate obtained by the application have high recovery rates, low mutual content, reusable acid liquid, low cost and environmental protection.

The present application relates to waste treatment equipment technical field, specifically is related to a kind of waste treatment equipment for comprehensive utilization of iron alum residue, including the circulating oxidation stirring device installed on waste liquid mixing bucket, circulating oxidation stirring device includes the flow mixing pipe installed in waste liquid mixing bucket inside, and the liquid inlet end of flow mixing pipe is installed with circulating oxygenation pipe, circulating oxygenation pipe is used to inject air into the flowing waste acid, and the liquid inlet end of circulating oxygenation pipe is communicated with the bottom of waste liquid mixing bucket, circulating oxygenation pipe is installed with circulating delivery pump and solenoid valve, and circulating delivery pump provides suction force for circulating oxygenation pipe, the present application can effectively improve the efficiency and effect of waste acid treatment, while saving manpower.

The invention provides a method for stably solidifying uranium from the source by forming a mineral membrane through microbial mediation, and belongs to the technical field of heavy metal treatment. According to the method, the acidophilic iron oxidizing microorganisms are used for mediating the additional ferrous source to form the ore film on the surface of the uranium-containing waste, and the ore film comprises one or more of jarosite, goethite, magnetite, gypsum, diaspore or kaolinite, so that migration, release and acid regurgitation phenomena of radioactive metal element uranium in the uranium-containing waste can be effectively inhibited; and the uranium release risk is reduced from the source.

The invention discloses a method for recovering and preparing high-purity nickel carbonate and electrodeposited cobalt from waste 3D printing nickel-based superalloy powder, and the method sequentially comprises the following steps: (1) reduction and acid leaching aiming at the characteristics that the waste powder is complex in component and nickel and cobalt are difficult to separate; (2) carrying out hydrolysis coprecipitation to preliminarily remove ferrosilicon; (3) extracting Lix984 to remove copper; (4) deeply removing iron by a sodium jarosite method; (5) P204 extraction and deep impurity removal; (6) extracting and separating nickel and cobalt by using P507; (7) multi-stage oil removal; (8) ion exchange adsorption and impurity removal; (9) nickel precipitation with sodium carbonate; by means of the specific combination of the steps and technological parameter control, efficient selective separation of nickel, cobalt and numerous impurity elements is achieved, high-purity nickel carbonate with the nickel content larger than or equal to 45 wt% and the single impurity content smaller than or equal to 10 ppm and electrodeposited cobalt meeting the Co9995 standard in YS / T 255-2009 can be directly prepared from complex waste powder, and the nickel recovery rate and the cobalt recovery rate are both larger than 98%. The method is compact in technological process, high in recovery rate and high in product added value.

The invention provides a method for recovering silver from jarosite slag through vulcanization and activation and synergistic flotation of zinc leaching slag, which adopts a vulcanization and activation pretreatment process and a flotation process to seamlessly integrate stockpiled jarosite slag into a zinc hydrometallurgy leaching slag flotation system so as to recover silver. Comprising the steps of pretreatment of ore pulp composed of the jarosite slag and water, accurate density regulation and control, sodium sulfide activation parameter control and proportion control of vulcanized jarosite slag ore pulp and active zinc leaching slag ore pulp. The method can be seamlessly integrated with the existing zinc hydrometallurgy process, and is specially used for recovering unselectable silver resources from the historically stockpiled jarosite slag, so that resource utilization is realized to the maximum extent, economic benefits are created, meanwhile, huge investment caused by newly-built independent treatment facilities is avoided, and the method is economical, practical and efficient and meets the environmental protection requirement.

The utility model relates to the technical field of lead and zinc recovery equipment, and discloses a metal lead and zinc recovery device. The metal lead and zinc recovery device comprises a device frame assembly, the upper end of the device frame assembly is connected and provided with a reduction furnace assembly, the upper end of the reduction furnace assembly is provided with a furnace body, a viewing area is installed in front of the upper end of the furnace body, the lower end of the furnace body is provided with a combustion structure, and the upper end of the furnace body is provided with a pipeline; a natural gas assembly is mounted at the upper end of the reduction furnace assembly, a conveying pipe is mounted at the upper end of the natural gas assembly, a valve is mounted at the upper end of the conveying pipe, a pressure gauge is mounted at the upper end of the valve, a mounting plate is mounted at the lower end of the conveying pipe, and a spraying pipe is fixed to the lower end of the mounting plate. The problems that due to the fact that lead is smelted through iron ore in a traditional reduction furnace, follow-up generated jarosite iron vanadium slag is difficult to treat, and follow-up metal recovery cannot be achieved are effectively solved.

The present application belongs to the technical field of hydrometallurgy, and particularly relates to a method for normal pressure leaching of copper, nickel and cobalt from a sulfur-containing alloy and in-situ precipitation of iron. The method comprises the following steps: crushing and ball milling the sulfur-containing alloy, mixing the sulfur-containing alloy with a nitric acid solution, and performing a leaching reaction under normal pressure; and after solid-liquid separation, obtaining a leaching solution containing copper, nickel and cobalt and a leaching residue containing iron. The present application realizes in-situ synchronous separation of iron by normal pressure leaching of the sulfur-containing alloy with nitric acid, and at the same time, the sulfurate generated by oxidation of the sulfur source of the material is combined with iron to generate a hydrated jarosite precipitate, thereby improving the recovery efficiency of valuable metals and simplifying the subsequent iron removal process.

The invention discloses a comprehensive recovery method of scandium, nickel, cobalt and manganese, and belongs to the technical field of metal production or refining. The method comprises the following steps: adding sulfuric acid into nickel cobalt hydroxide for leaching; introducing oxygen or air to oxidize the ferrous ions to obtain an oxidized leaching solution; carrying out vanadium precipitation and iron removal on the oxidation leaching solution, and separating to obtain scandium-containing jarosite slag and a second leaching solution; sO2 and oxygen / air are introduced into the second lixivium, so that divalent manganese is oxidized, and manganese oxide residues and third lixivium are obtained through separation; an organic phosphoric acid extraction agent and an organic carboxylic acid extraction agent form a composite extraction agent; saponifying the composite extracting agent, and then carrying out nickel-cobalt extraction on the third leaching solution; activating and roasting the scandium-containing jarosite slag by using concentrated sulfuric acid, and leaching after activation to obtain a fourth leaching solution; and performing scandium extraction on the fourth leaching solution by adopting a composite extracting agent, and separating and recycling scandium to realize separation from iron. By adopting the method, the comprehensive recovery of scandium, manganese, nickel and cobalt can be realized, and the efficient extraction of nickel and cobalt and the effective separation of nickel and cobalt from other metals can be realized.

The application discloses a kind of vanadium-containing steel slag vanadium-iron comprehensive recovery method, belong to vanadium-containing secondary resource clean vanadium extraction technical field, solve the low recovery rate of vanadium extraction in prior art vanadium-containing steel slag, calcium cannot be effectively utilized or acid consumption is large, environmental unfriendly problem.It includes: vanadium-containing steel slag is low-temperature calcined with ammonium sulfate;Ammonia-containing tail gas is obtained by water absorption to obtain ammonia water solution;After roasting clinker is cooled, first leaching, filtration is obtained first leaching solution and first leaching residue;Vanadium-iron co-precipitation is carried out by adjusting the pH value of first leaching solution with ammonia water solution;The mixture of yellow ammonium jarosite and ammonium polyvanadate is secondly leached with ammonium salt (or ammonia water);Second leaching solution is cooled and crystallized to obtain ammonium metavanadate and vanadium precipitation mother liquor;Ammonia water and carbon dioxide or ammonium carbonate are added to first leaching residue to carry out mineralization and carbon sequestration;Mineralization mother liquor of step 7 and first mother liquor of step 4 are evaporated and crystallized to obtain ammonium sulfate.The method of the application can realize the comprehensive utilization of vanadium-iron-calcium in vanadium-containing solid waste.

The present invention relates to the technical field of inorganic catalyst materials, and specifically discloses a supported FeP catalyst, a preparation method thereof and an application. The supported FeP catalyst includes: a porous alumina sphere carrier and FeP nanoparticles supported on the surface and in the pores of the porous alumina sphere carrier. In the present invention, ferrous sulfate is used as an iron source, and polyferric sulfate solution is prepared by oxidative polymerization. The porous alumina spheres are impregnated with polyferric sulfate, and then aged under specific conditions to convert the polyferric sulfate into jarosite-like substances on the surface and in the pores of the alumina spheres. Through subsequent phosphidation, the jarosite-like substances are converted into FeP, thereby realizing the firm loading of FeP nanoparticles on the surface and in the pores of the alumina spheres, significantly increasing the loading amount of FeP, and further ensuring the high catalytic activity of the supported FeP catalyst. At the same time, the catalyst can still maintain a high catalytic activity after being recycled multiple times, and has high popularization and application value.

The invention discloses a method for enriching and separating nickel, cobalt and scandium, and belongs to the technical field of metal production or refining. The method comprises the following steps: adding water into cobalt nickel hydroxide for slurrying; sulfur dioxide and oxygen or air are introduced into the slurrying liquid for oxidation, a catalyst is added, and ultrasonic waves are utilized for enhanced oxidation; dilute sulfuric acid is added into the oxidized slurrying liquid for leaching, and first leaching liquid and manganese oxide residues are obtained through separation; carrying out vanadium precipitation and iron removal on the first leaching solution, and carrying out solid-liquid separation to obtain scandium-rich jarosite slag and a second leaching solution; an organic phosphoric acid extraction agent and a hydroxime extraction agent are adopted to form a synergistic extraction system and saponified, a saponified organic phase is adopted to carry out nickel and cobalt dynamic extraction separation on the second leachate, cobalt is preferentially extracted, a cobalt-loaded organic phase is obtained, and a cobalt product is obtained through separation and purification; and carrying out nickel extraction on the cobalt extraction raffinate to obtain a nickel-loaded organic phase, and separating and purifying to obtain a nickel product. According to the method, nickel and cobalt are efficiently extracted and separated, and scandium enrichment is achieved.

The application discloses a comprehensive recovery method of scandium, nickel, cobalt and manganese, and belongs to the technical field of metal production or refining. The method comprises the following steps: adding sulfuric acid to nickel cobalt hydroxide for leaching; introducing oxygen or air to oxidize the ferrous ions, so that an oxidized leaching solution is obtained; removing iron from the oxidized leaching solution by jarosite precipitation, so that a jarosite residue containing scandium and a second leaching solution are separated; introducing SO2 and oxygen / air into the second leaching solution to oxidize the divalent manganese, so that an oxidized manganese residue and a third leaching solution are separated; forming a composite extractant by mixing an organic phosphoric acid extractant and an organic carboxylic acid extractant; performing nickel cobalt extraction on the third leaching solution after saponification of the composite extractant; activating and roasting the jarosite residue containing scandium by using concentrated sulfuric acid, and then leaching the activated residue to obtain a fourth leaching solution; and performing scandium extraction on the fourth leaching solution by using the composite extractant, so that the scandium is separated and recovered to be separated from iron. The method can realize comprehensive recovery of scandium, manganese, nickel and cobalt, and can realize efficient extraction of nickel and cobalt and effective separation of the nickel and cobalt from other metals.

The invention relates to the technical field of lithium metallurgy, in particular to a method for synchronously removing potassium in slurry mixing and potassium-rich mother liquor in lithium salt production, which comprises the following steps: taking the slurry mixing and the potassium-rich mother liquor from a lithium salt production process, adding the potassium-rich mother liquor into the slurry mixing, and uniformly stirring to obtain mixed liquor; the volume ratio of the mixed slurry to the potassium-rich mother liquor is (5-15): 1, and the concentration of potassium ions in the potassium-rich mother liquor is 5-20 g / L; s2, adding jarosite crystal seeds, ferrous sulfate and an oxidizing agent into the mixed solution, and carrying out a potassium precipitation reaction; and S3, after the potassium precipitation reaction is completed, returning the reaction mixture to a process before the lithium slag separation step in the lithium salt production process. By synchronously removing potassium from the slurry mixing material and the potassium-rich mother solution, high-concentration potassium in the potassium-rich mother solution is removed, and the concentration of potassium ions in the slurry mixing material is synchronously reduced, so that the concentration of potassium ions in a main process is reduced, the purity of a product is improved, the number of recyclable times of the mother solution is increased, and the production cost is reduced.

The invention discloses a method for preparing high-purity iron oxide red by utilizing jarosite slag, which comprises the following steps: mixing the jarosite slag with an oxalic acid solution, carrying out solid-liquid separation on a reaction product to obtain a zinc-powder-rich product, adding oxalic acid into an iron-rich complex ion Fe (C2O4) 33 <-> leaching solution to reduce iron powder so as to convert the iron powder into ferrous oxalate crystal precipitate, and carrying out solid-liquid separation on the iron-rich complex ion Fe (C2O4) 33 <-> leaching solution to obtain the high-purity iron oxide red. High-purity battery-grade ferrous oxalate powder is obtained through vacuum drying treatment, roasting is conducted under the inert atmosphere condition, a high-purity iron oxide red product with the purity larger than or equal to 98.5% and the particle size meeting the battery-grade use standard is finally obtained, and finally resource utilization and high-value utilization of the jarosite slag are achieved. The method provided by the invention not only overcomes the defects of long process flow, high energy consumption and high smelting cost of traditional jarosite slag treatment, but also solves the difficult problem of dangerous waste treatment for enterprises, generates various products with high added values, and has remarkable social benefits and economic benefits.

The invention discloses an electric field-ultrasonic collaborative gradient resource utilization method for molten salt water quenching multi-metal slag, which comprises the following steps: S1, roasting and cooling to obtain clinker, and carrying out wet ore grinding and magnetic separation; s2, magnetic separation tailings serve as an anode, acid liquor serves as electrolyte, two-stage reaction including impurity removal and titanium extraction is conducted after a pulsating direct-current electric field is applied, the residues are washed with water to be neutral and then subjected to acid pickling, and composite alkali liquor is added for ultrasonic reaction; s3, after the ultrasonic reaction, alkali liquor is added to adjust the pH value, iron vitriol, aluminum hydroxide and magnesium hydroxide are precipitated, and then extraction is conducted to obtain a manganese sulfate solution; cO2 is introduced into the sodium silicate solution for a carbonization reaction, and a nano white carbon black product is obtained after treatment. According to the method, the molten salt water quenching multi-metal slag which is highly difficult to treat is converted into a high-value resource, the application effect is extremely remarkable, gradient high-value recycling of elements such as iron, titanium, silicon, manganese, aluminum and magnesium is achieved, and the final tailings can be completely recycled.

The invention provides an iron-aluminum reagent containing ferric nitrate, aluminum isooctanoate, sodium jarosite and the like, the iron-aluminum reagent is used for treating high-concentration organophosphorus wastewater, the iron-aluminum reagent is added into the wastewater according to the water quality characteristics of the wastewater, a heating system is started after pH is regulated and controlled, a reaction is carried out under a certain temperature condition, and the reaction is stopped after the end point is detected. According to the method, organic phosphorus, organic sulfur and nitrate can be synchronously removed, high-crystallinity spherical giniite crystals can be recovered, the operation is simple, the process is short, and no secondary waste is generated.

The present application provides a kind of mineralogy prospecting method of cobalt polymetallic ore in highland arid-semiarid area, comprising the following steps: (1) in the field outcrop of highland arid-semiarid area, look for red-yellow brown iron mineralization, yellow potassium jarosite surface oxidation zone;(2) collect yellow potassium jarosite mineral oxidation zone sample in yellow potassium jarosite mineral oxidation zone;(3) utilize X-ray fluorescence spectrometer to carry out main component analysis to iron oxide, yellow potassium jarosite mineral oxidation zone sample;(4) the sample is screened, and X-ray powder diffraction analysis is carried out, and whether sodium jarosite diffraction peak is analyzed.The method provided by the present application takes simple and direct mineralogical species and component structure characteristics as the prospecting mark of highland arid-semiarid area hot water jet deposition type cobalt mine, realizes to reduce prospecting cost, reduce target area range, improve prospecting efficiency, also provides a new path for re-evaluation of traditional sulfide deposit associated cobalt resource potential.

The invention relates to a device and method for synergistically preparing high-quality zinc through zinc electrolysis acid mist treatment. A cation exchange membrane and a first anion exchange membrane are vertically arranged in an electrolytic bath in parallel, and the electrolytic bath is divided into a cathode chamber, a wastewater reaction chamber and an anode chamber which are isolated from one another; the first polar plate is vertically arranged on the side, close to the cation exchange membrane, in the cathode chamber in a front-back adjustable manner, the second polar plate is vertically arranged on the side, close to the first anion exchange membrane, in the anode chamber in a front-back adjustable manner, the anode plate is sleeved with a filter cloth bag, the filter cloth bag is sleeved with an anode frame, and the anode frame is provided with an exhaust port; the acid mist is absorbed by water after passing through the fan to prepare dilute sulphuric acid, the dilute sulphuric acid is returned to a zinc system for use, and produced sodium sulfate is high in purity and can be directly sold or used as an additive for removing iron by a sodium jarosite method, so that centralized treatment and recycling of the zinc electrolysis acid mist are realized, and the problem of acid mist is solved from the source.

The application discloses a method for recovering silver, lead, zinc and iron from silver-containing jarosite residue. The method uses silver-containing jarosite residue as raw material, and obtains jarosite residue roasting material by roasting the silver-containing jarosite residue at low temperature. The jarosite residue roasting material is leached by using high-purity water to obtain jarosite residue water leaching material and silver-containing leaching liquid. Silver is enriched in the form of silver chloride by adding chlorine to the silver-containing leaching liquid, and the silver-precipitated water leaching liquid is obtained. The jarosite residue water leaching material is leached by using acid to obtain acid leaching residue rich in lead sulfate and acid leaching liquid, the acid leaching liquid is mixed with the silver-precipitated water leaching liquid, and an oxidizing agent is added to oxidize Fe 2+ to Fe 3+ . Subsequently, the pH is adjusted by using an alkaline solution to obtain iron hydroxide or iron phosphate. The pH-adjusted liquid after solid-liquid separation is purified to obtain a zinc sulfate solution. The recovery rates of iron, silver and lead can reach more than 90%, and the recovery rate of zinc can reach more than 80%. The application prospect is good.

To provide at least one of an industrially applicable manufacturing method of a manganese sulfate solution, that does not generate jarosite and comprises a step of selectively removing potassium from a sulfuric acid acidic manganese solution; and a manufacturing method of manganese oxide using the manganese sulfate solution.SOLUTION: A manufacturing method of a manganese sulfate solution comprises a step of adsorbing a potassium ion on a zeolite by making a molar ratio of silica to alumina be 6 or more, and bringing the manganese sulfate solution containing the potassium ion into contact with the zeolite containing an oxygen 8-membered ring in a skeletal structure.SELECTED DRAWING: None

The application discloses coal gangue nutrient soil and relates to the technical field of soil improvement. The application comprises the following steps: crushing and screening high-sulfur and high-iron coal gangue to obtain coal gangue powder; enriching and culturing acidophilic sulfur-iron oxidizing composite bacteria liquid from acidic pit water in an ionic rare earth mine area; obtaining an ammonium source solution containing ammonia nitrogen by leaching ionic rare earth tailings, adjusting the ammonia nitrogen concentration and pH; mixing the coal gangue powder, the ammonium source solution and the acidophilic sulfur-iron oxidizing composite bacteria liquid to obtain a mixture; stacking the mixture and intermittently ventilating the mixture to perform oxidation mineralization, so that sulfuric acid and Fe 3+ react with NH4 + and K + to generate ammonium jarosite on the surface of the particles until the pH of the material is stable in the acidic range; adding an alkaline adjusting agent and organic matter to the material after mineralization, mixing and adjusting the pH to weak acidity; aging the material with the adjusted pH to obtain coal gangue nutrient soil with a granular structure.

The application discloses a method for inhibiting generation of mine acid wastewater from a source, and the method comprises the following steps: adding a substance containing monovalent cations into waste rock of a mine, and controlling the pH of the reaction to be 1-2.5 by using a pH regulator. In the reaction pH range of 1-2.5, the monovalent cations are used to react with high-iron ions and sulfate ions generated by oxidation of pyrite in the waste rock to generate jarosite precipitates. The generated jarosite precipitates are adsorbed to the surface of the oxidized pyrite and the unoxidized pyrite, a dense protective film is formed, the further oxidation of the pyrite is inhibited, and the purpose of inhibiting generation of the acid wastewater from the source is achieved.