172 results about "Xanthate" patented technology

The invention provides a low-molecular soluble chelating collector as well as a preparation method and application thereof, and belongs to the technical field of mineral processing. According to the collecting agent, low-molecular-weight ethylene glycol terephthalate serves as a precursor, and isosorbide is introduced for a copolymerization reaction; glutamic acid is introduced as a branched chain unit, and the branching degree and reaction active site density of the molecular structure are remarkably improved by utilizing the polyfunctional group characteristic of glutamic acid. A rigid ring structure and an ether bond of the isosorbide endow the medicament with good water solubility and dispersity, and invalid curling of a macromolecular chain is avoided; the introduction of glutamic acid branched chains greatly increases the number of hydroxyl groups and amino groups capable of reacting with carbon disulfide, so that each molecule carries more xanthate groups, and the adsorption stability and coverage density of the molecule on the surface of arsenopyrite are enhanced. By means of the structure, xanthate functional groups are fully exposed, multi-tooth chelation is easily conducted on the xanthate functional groups and iron and arsenic ions on the surface of arsenopyrite, a strong hydrophobic surface layer is formed, and therefore the collecting selectivity is remarkably improved.

The invention discloses a method for simulating reaction migration of metal in a xanthate-loaded porous medium. On the basis of a coupling reaction mechanism of metal and an organic complexing agent (xanthogenate) in a porous medium, a multi-surface morphology complexing model (MSM) containing soil native components and xanthogenate is constructed and is combined with a reactive migration numerical model (a coupling water flow and solute migration equation); according to the method, through model calibration and experimental verification, the dynamic migration process of each metal component and the competitive retention distribution of the metal component on different solid-phase components can be accurately simulated and quantitatively analyzed under the complex condition that metal and xanthate coexist.

The utility model relates to a horizontal fluidized bed drying machine for xanthate production, and belongs to the technical field of drying machines, the horizontal fluidized bed drying machine comprises a drying machine main body, an exhaust pipe is fixed on the upper surface of the drying machine main body, and an induced draft fan is fixed on one side, far away from the drying machine main body, of the exhaust pipe. According to the horizontal fluidized bed drying machine for xanthate production, materials are fed into the drying machine body from the feeding hopper, hot air is fed into the drying machine body through the air feeder, the materials are subjected to fluidized drying in the hot air, the dried air is exhausted through the exhaust pipe, the induced draft fan and the heat exchanger conduct heat recovery, and the motor drives the worm, the worm gear, the two-way screw, the toothed plate, the gear and the threaded rod to rotate. The movable block, the connecting rod, the rotating rod and the shifting plate move left and right, materials are evenly distributed on the net plate, it is ensured that the materials make full contact with hot air, the drying effect is improved, it is ensured that the materials are evenly distributed and make full contact with the hot air, the drying efficiency is improved, energy consumption is reduced, the product quality is ensured, and the market competitiveness is improved.

The invention discloses a method for preparing viscose fiber from alkali-soaked hemicellulose, and relates to the technical field of viscose fiber production and preparation, and the method comprises the following steps: sequentially carrying out multi-stage filtration and twice nanofiltration membrane filtration on alkali liquor squeezed from slurry porridge, and separating out high-concentration hemicellulose alkali liquor; after cellulose xanthate is generated through a xanthating machine reaction, high-concentration hemicellulose alkali liquor is added into the xanthating machine to be subjected to a xanthating reaction, and hemicellulose xanthate is generated; and adding dilute alkali liquor into the xanthating machine for dissolving, and sequentially filtering, defoaming and spinning to prepare the viscose fiber. After alkali cellulose and carbon disulfide are subjected to a yellowing reaction, high-concentration hemicellulose alkali liquor is added into a yellowing machine for secondary yellowing, then two xanthate esters are dissolved with dilute alkali liquor, and subsequent filtering, defoaming and spinning procedures are performed, so that full utilization of hemicellulose is realized, and the quality and spinnability of viscose fibers are guaranteed; meanwhile, pulp unit consumption and new alkali consumption are reduced, and the production cost is saved.

The invention belongs to the technical field of mineral flotation, and particularly discloses a xanthate collecting agent and a preparation method and application thereof, and the xanthate collecting agent is obtained by taking ether alcohol, carbon disulfide and caustic alkali as raw materials to react; the xanthate collecting agent is selected from at least one of formulas I-VI. The xanthate collecting agent has the advantages of being free of peculiar smell, easy to degrade, high in yield, high in purity, efficient in mineral flotation and the like, the working environment of the xanthate collecting agent in the production and using process can be effectively improved, operation is easy and convenient, cost is low, and industrial production is easy to achieve.

The invention provides a preparation method and application of a modified PVC adsorbent for gold extraction of carbonaceous gold ore, and belongs to the technical field of organic polymer materials and resource utilization. Based on construction of a hydroxylation-xanthate esterification reaction and bifunctional adsorption sites, a series of chemical modification paths of acetate nucleophilic substitution-hydrolysis-carbon disulfide alkali treatment are established, and xanthate functional groups with high reaction activity are accurately constructed on an inert PVC framework. Sulfur atoms in xanthate groups of the modified PVC are excellent electron donors and can generate strong chemical adsorption with metal impurities or polar sites on the surface of carbon, meanwhile, Van der Waals interaction between a main chain of the modified PVC and the carbon is reserved, and unmodified PVC or single hydroxylated PVC does not have the synergism of chemical adsorption and physical adsorption, so that the modified PVC can be used for preparing the carbon-modified PVC composite material, and the carbon-modified PVC composite material can be used for preparing the carbon-modified PVC composite material. And leap-type improvement of the adsorption capacity and selectivity of organic carbonaceous in minerals is realized.

The invention provides a lithium slag flotation desulfurization method, a ceramic tile doped with lithium slag and a preparation method of the ceramic tile, and the method comprises the following steps: controlling the particle size of the lithium slag to be treated within a preset particle size range, adding water into the lithium slag, and blending into ore pulp with preset solid content; sodium dodecyl sulfate and xanthate serve as collecting agents to be added into the ore pulp, sodium silicate serves as an inhibitor to be added into the ore pulp, and sodium carbonate is adopted to adjust the pH of the ore pulp to be within the preset pH range; and stirring the ore pulp of which the pH is adjusted to obtain desulfurized lithium slag concentrate, and dehydrating and drying the desulfurized lithium slag concentrate to obtain flotation lithium slag. Through complementation of chemical adsorption and physical adsorption, charge regulation and control and reinforcement of the hydrophobic layer, efficient selective separation of sulfide is realized, the addition proportion of a dispergator when the lithium slag is applied to wet ball milling of the ceramic billet is greatly reduced, the slurry performance of the lithium slag billet is remarkably improved, the cost is low, and the desulfurization effect is good.

The present invention relates to a high-efficiency flotation separation method for complex copper-iron sulfide ore, and belongs to the technical field of flotation reagents. A combined collector is prepared, wherein the components of the combined collector are composed of 75-80 parts of aminotrimethylenephosphonic acid, 10-15 parts of xanthate, 5-10 parts of ethylthiocarbamate, and 0.5-1 part of polyol fatty acid ester, and the mass concentration of the combined collector is 30-50%; pulping, adding 200-800g / t of sulfiding agent to the complex copper-iron sulfide ore, grinding the ore to a fineness of -0.074mm accounting for 65-90%, and then pulping to a slurry with a solid concentration of 25-40wt%; flotation, subjecting the slurry with a solid concentration of 25-40wt% to a flotation operation of one coarse, three-four fine, and two-three sweeps to obtain copper concentrate and sulfur tailings, wherein the combined collector is used in the flotation process of the one coarse, three-four fine, and two-three sweeps. The present invention develops a new type of combined collector as a flotation agent for efficiently separating chalcopyrite and pyrite minerals, thereby achieving excellent flotation separation effect of complex copper-iron sulfide minerals in a slurry under low-alkali conditions.

The present invention discloses a step-by-step enhanced recovery method for recovering multiple complex copper ores. The method includes grinding the sample to an appropriate particle size, then directly flotating copper sulfide using amyl xanthate. The tailings from the flotation of the copper sulfide are then deslimed. After desliming, the tailings are activated with sodium sulfide and free copper oxide is flotated using amyl xanthate and butyl ammonium black powder as collectors. Ethylenediamine phosphate is then used for enhanced activation, followed by the addition of sodium sulfide and amyl xanthate and butyl ammonium black powder as collectors to flotate bound copper oxide. Finally, high-gradient strong magnetic separation is used to recover weakly magnetically bound copper oxide that is difficult to float and contains adsorbed or fine particles of iron, manganese, cobalt, and other minerals. The method achieves a total copper recovery rate exceeding 85%, which is more than ten percentage points higher than the global average recovery rate for copper oxide ores. This method effectively addresses the current technical problem of low recovery rates for copper oxide ores using a single process.

The present application relates to the field of frother, in particular to a kind of copper flotation collector frother and preparation method thereof, by weight parts, including the following raw materials: N,N-dibutyl dithiocarbamic acid propyl cyanurate 100-120 parts, O-butyl-N-isobutyl thiopropyl carbamate 12-18 parts, xanthate 12-18 parts, phosphate ester polypropylene glycol ether 15-20 parts, modified betaine 5-8 parts, alcohol ether 3-5 parts, slime inhibitor 1-3 parts, alcohol ether carboxylate 2-5 parts, sorbitan monooleate 0.8-1.2 parts. Through the synergies of each raw material, the collector capacity, selectivity in copper flotation process can be effectively improved, and the reagent stability is good.

This invention belongs to the field of mineral processing technology, specifically relating to a selective sulfidation roasting-flotation separation method for a smithsonite-calcite mixed ore. The method first involves crushing and grinding the smithsonite, calcite, and sulfiding agent, then mixing them in a certain proportion and subjecting them to sulfidation roasting, preferentially causing the smithsonite to undergo sulfidation. After cooling the roasted product in an inert atmosphere, flotation separation is performed using xanthate as a collector to obtain zinc concentrate. By controlling the atmospheric conditions during the sulfidation roasting process, the sulfidation reaction efficiency of the smithsonite can be improved, and the generation of sulfur oxide gases during roasting can be reduced. When using this method to process the smithsonite-calcite mixed ore, effective recovery of the smithsonite can be achieved, with a flotation recovery rate exceeding 88%. This invention features a simple process flow and easily controllable operating conditions, providing a new technical approach for the efficient utilization of smithsonite resources.

The invention relates to the technical field of comprehensive utilization of vanadium titano-magnetite resources, in particular to a flotation combined reagent and a flotation method for vanadium titano-magnetite associated ultralow-grade cobalt-nickel ore. The flotation combined reagent comprises a copper ammonia compound activating agent composed of copper sulfate, ammonium carbonate and sodium citrate, a compound inhibitor composed of sodium humate, tannic acid and sodium tripolyphosphate, a main collecting agent butyl xanthate, an auxiliary collecting agent alkyl hydroxamic acid and a foaming agent diethylene glycol monobutyl ether. According to the method, a technical system of bulk flotation process-novel collaborative reagent system is constructed, so that the technical problem of recycling associated ultralow-grade cobalt and nickel resources in the vanadium titano-magnetite iron separation tailings is successfully solved, the problem of low separation efficiency of ultralow-grade minerals is effectively solved, a complete and efficient technical scheme is formed, and the method is suitable for industrial production. And an innovative technical path is provided for comprehensive recovery of associated cobalt and nickel resources of the vanadium titano-magnetite.

The utility model provides an accurate metering device for xanthate production, which comprises a machine body, a power mechanism and a pump body, the top of the machine body is fixedly connected with the power mechanism, the output end of the power mechanism enters the machine body, the side face of the machine body is fixedly connected with the pump body, the bottom of the pump body is fixedly connected with an input connector, and the input connector is fixedly connected with the output end of the pump body. The top of the pump body is fixedly connected with an output connector, the front face of the machine body is in threaded connection with a threaded pin, and the outer end of the threaded pin is fixedly connected with a rotary knob. The utility model has the advantages that the half clamp is fixed on the front side of the machine body through the screw and forms an annular clasping structure with the movable clasping clamp; rubber fastening protrusions are embedded in the inner sides of the holding clamps, friction locking between the holding clamps and the threaded pins is enhanced, end heads with notches are arranged at the ends of the two clamping hoops, and the clamping hoops are fastened through bolts and padded nuts. After adjustment is completed, the holding clamp and the half clamp are closed, the nut is tightened to enable the protrusion to press the threaded pin, displacement caused by vibration or pressure fluctuation is prevented, and constant metering parameters are guaranteed.

The invention relates to the technical field of lithium ion batteries, in particular to a thermal response interface passivator composition, an electrolyte and a lithium ion battery. The thermal response interface passivator composition comprises a silane component and a chalcogenide component, the silane component is selected from any one or more of 3-mercaptopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane or gamma-methacryloyloxypropyltrimethoxysilane, and the silane component is selected from any one or more of 3-mercaptopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane and gamma-methacryloyloxypropyltrimethoxysilane; the sulfur component is selected from diisopropyl xanthate disulfide and / or diphenyl disulfide. The thermal response interface passivator composition provided by the invention does not influence the electrochemical performance of a battery under the conventional operation condition of the battery, and can spontaneously polymerize on the surface of a negative electrode at the high temperature of 100-120 DEG C to form a stable and compact passivation layer, namely, an effective thermal barrier is formed before a diaphragm is broken, so that electron leakage and electrolyte decomposition are effectively blocked, and the service life of the battery is prolonged. And the thermal safety of the battery is obviously improved.

The present application relates to the technical field of ore-dressing wastewater treatment, and particularly relates to a magnetized photocatalyst through magnetic separation concentrate, and a preparation method and application thereof. The present application disperses the magnetic separation concentrate after ball milling into a mixed solution of anhydrous ethanol, water and ammonia water to obtain a suspension 1; a mixed solution of tetraethyl orthosilicate and anhydrous ethanol is added into the suspension 1 to perform coating to obtain gamma-Fe2O3@SiO2; the photocatalyst, a solvent and gamma-Fe2O3@SiO2 are mixed to obtain the magnetized photocatalyst; the photocatalyst is bismuth tungstate or bismuth oxyiodide. Under the optimal conditions, the degradation efficiency of the photocatalyst on xanthate can reach 100%, and the photocatalyst can be recycled through magnetism, so that the operation cost is greatly reduced, and the photocatalyst has a good application prospect. The present application utilizes the natural magnetic hematite gamma-Fe2O3, avoids the problems of numerous artificial synthesis steps and high cost, and has a wide application prospect in the field of magnetic photocatalysts.

The application provides a high-efficiency foaming agent suitable for argillaceous porphyry copper ore in high-cold regions and a preparation method and application thereof. The high-efficiency foaming agent suitable for argillaceous porphyry copper ore in high-cold regions is composed of mixed alcohols, pine oil, sulfur-nitrogen esters, diesel oil, xanthate and a surfactant. The high-efficiency foaming agent suitable for argillaceous porphyry copper ore in high-cold regions is simple in preparation method, does not produce intermediate products, has low irritation, is friendly to the environment, has low dosage of the medicament compared with traditional single foaming agent, has stable foam properties, and can also assist in collecting some chalcopyrite, molybdenite and other sulfide ores. Within the range of the component allocation, the foaming agent can fully exert the synergistic effect of each component. In a high-altitude environment (altitude >= 3500m), the foaming capacity and foaming rate of the foaming agent are obviously superior to those of traditional foaming agents.

The invention relates to the technical field of medicament synthesis, and particularly discloses a microreactor device for preparing liquid isopropyl xanthate, the microreactor device comprises a workbench, the top of the workbench is fixedly connected with a mixing tank through a support, and the two sides and one end of the mixing tank are communicated with feeding pipes; the end, away from the mixing tank, of the feeding pipe communicates with a discharging port of a metering pump, the bottom of the metering pump is fixedly connected with the top of the workbench, the inner wall of the mixing tank is rotationally connected with a mixing device, and the part, located below the mixing tank, of the top of the workbench is fixedly connected with a first motor. According to the microreactor device for preparing the liquid isopropyl xanthate, the mixing device is arranged, so that the mixing efficiency of isopropanol, carbon disulfide and liquid caustic soda before reaction can be improved, and the dosing mechanism is arranged, so that the mixing efficiency of isopropanol, carbon disulfide and liquid caustic soda before reaction can be improved. Therefore, the reaction efficiency of the mixed solution of isopropanol, carbon disulfide and caustic soda liquid during reaction can be improved.

The invention relates to the field of mineral processing, and provides a method for reducing the content of sulfur in iron ore concentrate, which comprises the following steps: preparing the iron ore concentrate into ore pulp with the mass fraction of 30-50%; s2, the ore pulp in the step S1 is pretreated, and the pretreatment mode is ultrasonic treatment or hydraulic cavitation treatment; the ore pulp pretreated in the step S2 is subjected to flotation operation, sulfur-containing foam is obtained through flotation, low-sulfur concentrate is obtained, and the remaining product is desulfurized iron ore concentrate; the flotation reagent comprises a conditioning agent, a collecting agent and a foaming agent, the conditioning agent comprises lime and copper sulfate, the collecting agent is amyl xanthate, and the foaming agent is methyl isobutyl carbine.According to the method, ultrasonic or hydraulic cavitation pretreatment is combined with the flotation reagent, the floatability of pyrrhotite in the iron ore concentrate is improved, and the flotation efficiency is improved; and the sulfur content in the iron ore concentrate is obviously reduced.

The invention belongs to the technical field of tailing sewage treatment equipment, and particularly provides multi-stage treatment equipment and a multi-stage treatment method for tailing sewage treatment. The invention discloses multi-stage treatment equipment for treating tailing sewage. The multi-stage treatment equipment comprises a shell, a bottom bin, a sealing bin, a rotating shaft and a turntable, the invention relates to a multistage treatment method for treating tailing sewage. An electrochemical pH regulation and impurity directional precipitation stage; a stirring and diffusion strengthening stage; a precipitate separation and conveying stage; a heating disinfection and final discharge stage; and a real-time monitoring and self-adaptive adjusting stage. According to the method, the pain points of local acid-base imbalance and slow overall adjustment in traditional electrochemical treatment are solved, the pH balance efficiency is improved by 30% or above, and the reaction process is more environmentally friendly; and refractory organic matters such as xanthate and phenols are directly converted into harmless small molecules through anodic oxidation, so that compared with a traditional fractional step method, the treatment process is shortened, and the comprehensive purification efficiency is greatly improved.

A novel bis-ligand chalcopyrite collector and a preparation method and application thereof. The collector is prepared by first synthesizing an intermediate oxalyl diisothiocyanate from oxalyl chloride and thiocyanate, and then reacting the intermediate with an amine or an alcohol using a one-pot method. The collector provided by the present disclosure can form more stable dual-site adsorption on the chalcopyrite surface, thereby generating a more stable double-chelate-ring structure than the single-site adsorption of a traditional chalcopyrite collector such as xanthate and dithiophosphate. The collector not only has higher collection ability and excellent selectivity, but also can achieve efficient copper-sulfur separation even under a low-alkalinity condition. The preparation process of the collector is simple and operable, facilitating the flotation of chalcopyrite and its separation from pyrite.

A method for producing a fluoropolymer by solution polymerization or dispersion polymerization, the method including: in the presence of an initiator, a chain transfer agent, and a solvent, (i) homopolymerizing tetrafluoroethylene; or (ii) randomly copolymerizing tetrafluoroethylene and at least one of a monomer represented by the following formula (1) or a monomer represented by the following formula (2). The chain transfer agent includes at least one selected from dithioester compounds, dithiocarbamate compounds, trithiocarbonate compounds and xanthate compounds. The fluoropolymer contains 50 to 100 mol % of a polymerized unit based on the tetrafluoroethylene. The formula (1): CF2═CR1R2 wherein R1 and R2 are as defined herein, the formula (2): CH2═CR3R4 wherein R3 and R4 are as defined herein.

The invention discloses a microemulsion collecting agent for flotation of high-mud-content and high-oxidation molybdenite and preparation and application of the microemulsion collecting agent and belongs to the technical field of mineral processing, kerosene, xanthate or black powder collecting agents, a main emulsifier, a cosurfactant and water are mixed according to a certain proportion and then subjected to ultrasonic emulsification treatment, and the microemulsion collecting agent is obtained. According to the micro-emulsion collecting agent prepared through the method, after one-time roughing and two-time scavenging are conducted, the molybdenum recovery rate is remarkably increased compared with the molybdenum recovery rate when a kerosene collecting agent is singly used, the micro-emulsion collecting agent is simple in preparation method, high in emulsion stability, high in dispersity in ore pulp and free of slime interference, and the separation and recovery problem of high-argillization molybdenite is well solved.

Provided is a chloroprene polymer latex composition with which a dip-molded article having excellent flexibility and excellent tensile strength at break can be obtained. According to the present invention, provided is a chloroprene polymer latex composition containing a chloroprene polymer latex (A), a metal oxide (B), a vulcanization accelerator (C), sulfur (D), and an aromatic heterocyclic compound (E), the chloroprene polymer rubber obtained by freeze-drying the chloroprene polymer latex (A) having a toluene-insoluble component of 50-95% by mass, the chloroprene polymer latex composition contains 0.3-15.0 parts by mass of the metal oxide (B), 0.02-1.50 parts by mass of the vulcanization accelerator (C), 0.01-0.75 parts by mass of the sulfur (D), and 0.1-10.0 parts by mass of the heteroaromatic compound (E) per 100 parts by mass of the solid content of the chloroprene polymer latex (A), and the content of the metal oxide (B), the vulcanization accelerator (C), the sulfur (D), and the heteroaromatic compound (E) is 100 parts by mass of the solid content of the chloroprene polymer latex (A). The vulcanization accelerator (C) contains at least one of thiuram-based, dithiocarbamate-based, thiourea-based, guanidine-based, xanthate-based, and thiazole-based vulcanization accelerators, and the heteroaromatic compound (E) is represented by chemical formula (1).

The application discloses a combined depressor for flotation and arsenic removal of copper-arsenic mixed concentrate and an application method thereof, and relates to the technical field of ore dressing.The combined depressor is composed of depressor A and depressor B, wherein the depressor A is a mixture of magnesium ammonium chloride and aluminum sulfate, and the depressor B is a mixture of tartaric acid and carboxymethyl chitosan.The combined depressor and ultrasonic coupling mechanical stirring oxidation are combined to realize strong depression of sulfur-arsenic-copper ore and arsenic-malachite in the copper-arsenic mixed concentrate.The combined depressor is green and pollution-free, the application method is simple and easy for industrial production, and the application method can selectively depress arsenic-containing minerals without adding oxidizing chemicals, and can efficiently separate non-arsenic-containing copper sulfide by using the combined collector of ethylthiuram and ethyl xanthate, so that good copper and arsenic separation effect is achieved.

The present application belongs to the technical field of comprehensive recycling of non-ferrous smelting slag, and particularly relates to a method for simultaneously floating and separating and recycling elemental sulfur and zinc sulfide from high-sulfur slag, which specifically comprises the following steps: (1) adding copper sulfate to high-sulfur slag slurry for microwave treatment, then adding hydrogen peroxide for heating treatment, and standby; (2) obtaining sulfur concentrate by floating the high-sulfur slag slurry obtained in step (1), and separating elemental sulfur and zinc sulfide by extracting the sulfur concentrate; the method promotes copper doping on zinc sulfide particles by microwave, improves the floating capacity of zinc sulfide, simultaneously floats and recycles elemental sulfur and zinc sulfide by adding xanthate collector during floating, and finally separates elemental sulfur and zinc sulfide by extraction; the method realizes efficient and high-grade recovery of sulfur and zinc sulfide at the same time, and provides comprehensive utilization of resources.

The invention discloses an organic inhibitor for selectively inhibiting sphalerite as well as a preparation method and application thereof, and relates to the technical field of mineral processing. Aiming at the problem of poor effect of a fine-grained sphalerite inorganic inhibitor, lactic acid esterified starch synthesized by reacting starch with lactic acid is used as a novel inhibitor. The inhibitor is non-toxic and easy to degrade, and has the advantage of environmental protection. The use method of the inhibitor comprises the following steps: adding an organic inhibitor prepared from modified starch into sphalerite, and separating lead and zinc through one-step roughing, three-step refining and three-step sweeping. The added inhibitor is selectively adsorbed on the surface of the sphalerite to inhibit the hydrophobicity of the sphalerite and hinder the adsorption of xanthate, so that the floating of the sphalerite is effectively inhibited, and meanwhile, the floatability of the galena is kept; and finally, a collecting agent and a foaming agent are added for preferential flotation of galena, and efficient separation of lead and zinc is achieved.

The invention relates to a method for removing ethyl xanthate and arsenic in a water body through sulfur chemical fiber iron ore, and belongs to the technical field of environmental pollution treatment. According to the method, the S / Fe molar ratio of sulfur chemical fiber iron ore is regulated and controlled, and reactive oxygen species (ROS) generation and electron transfer mechanisms are combined, so that efficient degradation of ethyl xanthate and fixation of arsenic are realized. The preparation method of the sulfur chemical fiber iron ore comprises the steps of synthesis of lepidocrocite, vulcanization reaction, post-treatment and the like. When pollutants are removed, the sulfur chemical fiber iron ore is dispersed in an aqueous solution containing ethyl xanthate and / or arsenic, and the pollutants are removed through active oxygen oxidation, electrochemical oxidation, adsorption and coprecipitation, surface oxidation and other ways. The method has the advantages of environment friendliness, resource utilization, low cost, high adaptability and the like, and is suitable for treating mine wastewater, beneficiation wastewater and arsenic-polluted water.

The present invention discloses a combined inhibitor for sphalerite and its application. The combined inhibitor includes a reducing substance and anthocyanin. As a combined inhibitor for sphalerite, it is used in the flotation separation of chalcopyrite and sphalerite or galena and sphalerite. After the raw ore is crushed and ground, a combined collector and a frother are added to the pulp to carry out copper-zinc or lead-zinc flotation operation. During the copper-zinc or lead-zinc separation operation, the combined inhibitor is added as a sphalerite inhibitor, isoamyl xanthate is used as a chalcopyrite or galena collector, and No. 2 oil is used as a frother. The foam product is a copper concentrate or a lead concentrate, and the bottom tank product is a zinc concentrate. The combined inhibitor of the present invention has a strong inhibitory effect on sphalerite and can effectively achieve the flotation separation of chalcopyrite and sphalerite or galena and sphalerite. The reducing substance can enhance the inhibitory effect of anthocyanin on sphalerite and reduce the amount of anthocyanin used, thereby improving the separation effect of copper-zinc and lead-zinc sulfide ores while reducing the mineral processing cost.

This invention relates to the field of mineral processing flotation reagents, specifically disclosing a high-efficiency collector for the flotation of sphalerite and its preparation method. The high-efficiency collector provided by this invention achieves synergistic enhancement of the functions of each component by compounding isopropyl xanthate, dialkyl dithiocarbamate, and mercaptoacetate, and introducing a designed and synthesized polymeric synergist. The three basic collector components together constitute a dense and stable primary hydrophobic adsorption layer. The introduced synergist, on the one hand, enhances the adsorption strength and selectivity on the surface of sphalerite through multiple functional groups; on the other hand, its grafted hydrophilic polymer chains can form steric hindrance at the mineral-water interface and regulate local hydrophilicity and hydrophobicity, thereby further optimizing the hydrophobic state of the mineral surface and inhibiting gangue inclusions. The composite reagent provided by this invention improves the recovery rate of useful minerals while ensuring concentrate quality.

The application discloses a method for selectively separating chalcopyrite and pyrite, and belongs to the field of mineral separation. First, lime is added to adjust the pH to 9-10 during grinding, then ethanolamine and isoamyl xanthate are added into the slurry as a combined collector I, wherein the ethanolamine has the function of a foaming agent, and under the condition of one roughing, three scavenging and two cleaning, a copper concentrate is obtained. The combined collector I has good synergistic effect, and has the advantages of considering the collecting property, selectivity and foaming property, reducing the amount of the inhibitor lime, and not needing to add a foaming agent, and can selectively and efficiently separate copper-sulfur minerals.