42 results about "Sphalerite" patented technology

The invention provides a poly-like flocculation flotation method for micro-fine particle galena and micro-fine particle sphalerite. The method comprises the following steps: firstly, mixing to-be-treated ore samples containing micro-fine particle galena and micro-fine particle sphalerite with the particle sizes of less than or equal to 20 microns with water to obtain to-be-treated ore pulp, then sequentially adding zinc sulfate, diethyldithiocarbamate, polyoxyethylene, polyaluminum chloride and a foaming agent, and carrying out air inflation flotation and foam scraping to obtain galena concentrate and tailings. ZnSO4 is adsorbed on the surface of the micro-fine-particle sphalerite in advance and generates a synergistic effect with polyaluminum chloride added subsequently, and N, N '-diethyldithiocarbamate is adsorbed on the surface of the micro-fine-particle galena in advance and generates a synergistic effect with polyoxyethylene added subsequently, so that galena hydrophobic floccules and sphalerite hydrophilic floccules with proper apparent particle sizes are formed; on one hand, the flotation recovery rate of the micro-fine particle galena can be increased, and on the other hand, mechanical entrainment of the micro-fine particle sphalerite can be reduced, so that the flotation separation efficiency of the micro-fine particle lead zinc ore can be effectively improved.

The application discloses a beneficiation method for separating pyrrhotite from marmatite and a zinc-sulfur inhibitor, the raw ore is marmatite containing pyrrhotite and pyrrhotite, the zinc-sulfur inhibitor T28 is added into the raw ore for grinding to obtain a slurry, CuSO4 is added into the slurry for sufficient stirring, zinc collector ZY402 is added into the stirred slurry for zinc roughing to obtain roughing zinc concentrate and roughing zinc tailings, the roughing zinc concentrate is subjected to three times of cleaning operation, the roughing zinc tailings are added with the zinc collector for three times of scavenging, finally, zinc scavenging tailings and zinc concentrate are obtained, the zinc scavenging tailings are subjected to one time of sulfur roughing, two times of sulfur scavenging and one time of sulfur cleaning to obtain sulfur concentrate and tailings. The application has the advantages of simple technological process, low equipment investment, low reagent cost, high separation efficiency, strong adaptability to ore property fluctuation, stable process, great theoretical value and economic value for the development of lead-zinc ore beneficiation which meets the increasingly strict environmental protection requirements.

The invention discloses an organic inhibitor for galena and application of the organic inhibitor. The inhibitor is 3-mercapto-1 sodium propane sulfonate (MPS). Aiming at the characteristics of close copper and lead symbiosis, high iron and zinc content and fine disseminated particle size of raw ore, the method adopts the technological process of'copper and lead partial bulk flotation tailing discarding-bulk concentrate regrinding-copper and lead separation flotation ', and comprises the following steps: firstly, in a bulk flotation section, utilizing a zinc sulfate and sodium sulfite combined reagent to efficiently inhibit sphalerite and pyrite under a weakly alkaline condition; a large number of gangue and zinc-sulfur minerals are thrown away in advance; the method comprises the following steps of: carrying out superfine regrinding dissociation on obtained bulk concentrate, then carrying out separation operation, and in a copper-lead separation section, replacing traditional dichromate with 3-mercapto-1 sodium propane sulfonate (MPS), carrying out a closed-loop process of one-roughing, three-refining and three-sweeping, and supplementing an inhibitor in fine selection operation, so that efficient inhibition of galena and preferable flotation of chalcopyrite are realized. The technological process is rigorous in design, the reagent system is green and environmentally friendly, and the resource recovery rate of the low-grade complex ore is remarkably increased.

This invention discloses a flotation separation method for high-sulfur copper-zinc ore beneficiation, comprising the following steps: Step a. Classifying and grinding the high-sulfur copper-zinc ore, controlling the grinding fineness to ensure that the product particle size P80 is 120μm to 150μm; Step b. Performing a first-stage copper-zinc mixed flotation operation on the obtained grinding product: adding lime during the flotation process at a rate of 100g / t to 200g / t to adjust the pH value of the pulp to the range of 7.5 to 8.5, forming surface statics between chalcopyrite, sphalerite, and pyrite. Potential difference; an aerated flotation machine is used as the flotation equipment, and the selective collector O-ethyl-N-benzoyl thiocarbamate is added at a dosage of 25g / t to 30g / t for aerated flotation to obtain a copper-zinc-sulfur mixed concentrate; step c. the obtained copper-zinc-sulfur mixed concentrate is fed into a vertical spiral stirred mill for regrinding, and the regrinding fineness is controlled to P90≤20μm to achieve full mineral liberation and surface desorption; this invention can achieve precise separation of copper, zinc and sulfur, reduce costs and improve efficiency and increase the comprehensive utilization rate of resources.

The invention discloses a method for flotation separation of galena and sphalerite, and belongs to the technical field of mineral flotation. The method comprises the steps that sodium hypochlorite and manganese sulfate are added into lead-zinc bulk concentrate pulp for an oxidation reaction, filtering is conducted after the reaction, polyvinyl alcohol is added into filter residues for continuous reaction, and treated pulp is obtained; and then a collecting agent and a foaming agent are added, and efficient separation of galena and sphalerite is achieved through the flotation process of one-time roughing, three-time refining and two-time sweeping. Sodium hypochlorite and manganese sulfate have a synergistic effect in ore pulp, a hydrophilic oxide layer and an inorganic film are formed on the surface of the sphalerite, and polyvinyl alcohol further forms a compact organic adsorption layer through hydrogen bonds, so that inhibition on the sphalerite is enhanced. The method can effectively inhibit sphalerite and improve lead-zinc separation selectivity and efficiency, and is especially suitable for separation of complex lead-zinc ore.

The application discloses a kind of iron wurtzite and sulphide iron ore mineral asynchronous flotation separation method, belong to nonferrous metal sulphide mineral flotation technical field;The application promotes the flotation of iron wurtzite by slurry aeration, realizes the asynchronous flotation of iron wurtzite, pyrite and pyrrhotite by means of high selectivity collector CTB-2 and oxidant calcium hypochlorite, solves the problem of difficult separation of iron wurtzite and pyrrhotite, and uses high concentration copper sulfate as depressor to rapidly improve the grade of zinc concentrate, uses ferrous sulfate to realize the sulfur-free flotation of sulfur concentrate, and finally obtains high-quality zinc concentrate, first sulfur concentrate (pyrite) and second sulfur concentrate (pyrrhotite) products.The application optimizes and simplifies the beneficiation process, cancels the magnetic separation step in the traditional process, and realizes efficient separation of zinc and sulfur through single flotation method.

The application belongs to the technical field of standard substance preparation, and particularly relates to a sphalerite standard substance and a preparation method thereof. The preparation method of the sphalerite standard substance provided by the application comprises the following steps: mixing zinc acetate, ammonium sulfide, a multi-element mixed standard solution and water to perform a hydrothermal reaction, so as to obtain mixed sulfides mainly containing zinc sulfide; and performing hot-press sintering on the mixed sulfides mainly containing zinc sulfide, so as to obtain the sphalerite standard substance. The application combines the hydrothermal method and the hot-press method for the first time, and synthesizes a dense, solid and chemically uniform ZnS material, the matrix of which is consistent with the sphalerite crystal structure, the major components of which are consistent, and the element distribution of which is uniform, and the sulfur isotope composition of which is consistent with that of the sphalerite, so that the sphalerite standard substance is suitable for being used as a standard substance for sphalerite sulfur isotope analysis and trace element quantitative analysis.

The application discloses a mineralized filter element and a preparation method thereof and a water purifier. The mineralized filter element comprises a shell and a first filter element, a second filter element and a third filter element filled in the shell. The first filter element comprises calcareous cement filter material and modified sphalerite, the calcareous cement filter material comprises modified calcareous mudstone slurry and modified anorthite; the second filter element comprises an analcime composite material, the analcime composite material comprises modified analcime, activated carbon, chitin and a binder; and the third filter element comprises a sodium feldspar composite material, the sodium feldspar composite material comprises modified sodium feldspar, activated carbon, chitin and a binder. The application aims at solving the problem of poor taste of existing drinking water filtered by a reverse osmosis membrane.

An electrochemically mediated, hydrometallurgical method is provided for extraction of nickel, zinc, lead, silver, molybdenum, and / or copper from sulfide minerals. These metal concentrates, such as pentlandite, pyrrhotite, pyrite, sphalerite, galena, Ag2S, MoS2, etc., are contacted with nitric acid and cerium(IV) nitrates, cerium(IV) methanesulfonate, and / or cerium(IV) sulfate, as oxidative leaching agents to preferentially leach the target metals contained therein. The strong oxidizing capacity of cerium(IV) enables rapid dissolution of metal sulfides under ambient conditions. Cerium(IV) can be electrochemically regenerated and recycled for treatment of additional sulfide minerals. Target metal products can be extracted via processes such as solvent extraction and precipitation, enabling complete recovery, e.g., of nickel from pentlandite.

The present application relates to a kind of based on sphalerite trace element discriminant deposit type method;Belong to deposit prospecting technical field.The present application first proposes to build sphalerite trace element database and constructs sphalerite trace element training set and test set and combines machine learning method, and widely exists in the sphalerite trace element of various types of deposit as the mark of judging its deposit type, improves the prospecting efficiency and accuracy of the deposit related to sphalerite, while solving the problem that the deposit deep edge prospecting is difficult and cost is high.

This invention provides a beneficiation method for separating lead and zinc in lead-zinc sulfide ores containing extremely low levels of copper sulfide. The method involves pretreatment of the slurry with a heavy metal ion shielding agent, stirring with an active zinc sphalerite remover, and finally adding a collector to capture the lead minerals. The process is environmentally friendly and has good applicability. When processing lead-zinc sulfide ores with a copper grade of no more than 0.05%, the lead concentrate has a lead grade of over 60%, the zinc grade is no more than 6%, and the lead recovery rate is over 90%. The zinc concentrate has a zinc grade of over 42%, and the zinc recovery rate is over 90%.

The invention provides a flotation separation inhibitor for copper-zinc sulfide ore, and relates to the technical field of preparation of inhibitors through mineral flotation. The inhibitor is prepared from the following raw materials: sodium zincate, maleic anhydride modified starch, an acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer, tea polyphenol, vanillin and modified xanthan gum. The raw materials of the inhibitor can achieve a synergistic effect, the complexing efficiency of the inhibitor and metal ions can be improved, and the situation that Cu < 2 + > released by chalcopyrite in the flotation separation process activates sphalerite, so that the action effect is affected is avoided; the inhibitor can form an obvious selective adsorption effect on the surface of sphalerite to form a uniform and stable hydrophilic film, flotation of sphalerite is effectively inhibited, impurities introduced into copper concentrate are effectively reduced, more zinc minerals are reserved in flotation copper tailings, the grade and the recovery rate of copper in the copper concentrate are improved, and the flotation effect of sphalerite is improved. And the flotation separation effect of the copper-zinc sulfide ore is improved.

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 invention belongs to the technical field of mineral separation, and particularly relates to a marmatite-containing composite collecting agent and an application method thereof. According to the marmatite-containing composite collecting agent, marmatite with the iron content higher than 10% can be stably and effectively collected, the marmatite-containing composite collecting agent has high selectivity on marmatite, and the high collecting effect on pyrite minerals cannot be generated; compared with the prior art, the composite collecting agent provided by the invention is simple in preparation mode and remarkable in selective collecting effect on target minerals. In addition, the marmatite-containing composite collecting agent can also be used as a collecting agent of common marmatite.

A kind of jamesonite and marmatite flotation separation method, comprising the following steps: (1) the lead-zinc ore containing jamesonite and marmatite is ground, so that the content of-74 microns is 80-90%, to obtain the concentration of 30-40% flotation slurry;(2) put Congo red dye into stirring barrel to make 5% mass concentration solution;(3) add 300-1200g / t Congo red dye to neutral pH slurry, and react with slurry for 5min, then add ethion and frother, after pulp conditioning, carry out flotation to obtain lead rough concentrate;(4) carry out cleaning operation on lead rough concentrate, only add Congo red dye in cleaning, and the amount of reagent is 50% of the previous operation.Middlings are returned to the previous operation in turn.The present application uses Congo red dye as depressor, which has good selectivity to marmatite, and can realize efficient separation of jamesonite and marmatite at neutral pH.

The invention relates to the technical field of sphalerite flotation, in particular to a method for strengthening sphalerite flotation. A method for strengthening flotation of sphalerite comprises the following steps that oxidized sphalerite and a potential regulating agent solution are mixed, the potential of the potential regulating agent solution is controlled to range from-0.55 V to 0 V and is not 0 V, and a mixed system is obtained; washing the solid material in the mixed system to obtain a washed material; and carrying out flotation treatment on the washing material. The method has the advantages of being environmentally friendly, simple in process, low in cost and remarkable in effect.

The invention provides a mineralized filter element based on a natural rock material as well as a preparation method and application of the mineralized filter element. The mineralized filter element is prepared from a main material and an auxiliary material, wherein the main material adopts a modified natural rock material, and specifically comprises modified celestite, modified medical stone, modified spodumene, modified zeolite, modified dolomite, modified sphalerite, modified magnesite and modified quartz porphyry; the auxiliary materials comprise activated carbon and a binder. The preparation method sequentially comprises the steps of modifying, burdening, canning, compacting, baking and demolding. Wherein the modification comprises the following steps: sequentially carrying out acid pickling, water washing, calcining, cooling, crushing and screening on the natural rock material, so as to obtain the modified natural rock material. Natural rock materials are extracted from the nature to be modified and added into the mineralization filter element, various mineral elements needed by the human body can be released, remineralization of low-mineralization-degree water is achieved, and large-scale application and popularization are facilitated.

The application discloses a method for removing heavy metal in oligotrophic environment by using semiconductor mineral reinforced microorganisms, which utilizes light energy to replace organic matter to drive sulfate-reducing bacteria metabolism to remove heavy metal ions. The sphalerite produced by microbial metabolism or natural sphalerite or chemically synthesized sphalerite is excited to produce photoelectrons under light conditions, and the sulfate-reducing bacteria with extracellular electron transfer capacity utilize the photoelectrons to carry out sulfate reduction metabolism to produce hydrogen sulfide, which reacts with heavy metal ions (such as lead ions) in wastewater to form heavy metal sulfide precipitates such as lead sulfide, so as to remove the heavy metal ions from the water phase. The method cooperatively utilizes light energy and chemical energy to efficiently treat heavy metal pollution, and simultaneously avoids problems such as secondary pollution, active sludge production and greenhouse gas emission in the treatment process, has low treatment cost, is environment-friendly, and has a wide application prospect.

The invention discloses a polymer-like flocculation flotation method for micro-fine particle lead zinc ore, and relates to the technical field of mineral processing. The polymer-like flocculation flotation method for the micro-fine particle lead-zinc ore comprises the following steps: S1, mixing an ore sample to be treated with water, and pre-stirring to obtain prepared ore pulp; the pH value of the prepared ore pulp is adjusted to be 7-13, and to-be-treated ore pulp is obtained; s2, ferric trichloride is added into the ore pulp to be treated, and first ore pulp is obtained; s3, adding a natural polysaccharide flocculant into the first ore pulp to obtain second ore pulp; s4, polyoxyethylene is added into the second ore pulp, and third ore pulp is obtained; s5, a sulfide mineral collecting agent is added into the third ore pulp, and fourth ore pulp is obtained; s6, a foaming agent is added into the fourth ore pulp, and galena concentrate and tailings are obtained after flotation and foam scraping; wherein the to-be-treated ore sample comprises galena and sphalerite, so that the recovery rate of the galena is effectively increased, and meanwhile, the entrainment recovery rate of the sphalerite is remarkably reduced.

The invention provides a sulfide ore collecting agent based on thiophene-amide-sodium phosphate and a preparation method and application of the sulfide ore collecting agent, and belongs to the field of chemical synthesis and mineral processing. A sodium phosphate group at the tail end of the collecting agent endows molecules with excellent water solubility, and efficient dispersion and convenient adding of the agent in ore pulp are achieved; meanwhile, the hydrophilic group is preferentially anchored on the surface of the mineral through electrostatic interaction and cooperates with the directional adsorption of the rigid thiophene skeleton and the specific coordination of the amide group on the copper and zinc ions to form a unique'electrostatic pre-anchoring-plane adsorption-coordination locking 'multi-step synergistic effect mechanism. The mechanism not only strengthens the collecting capacity of chalcopyrite and sphalerite, but also reduces non-selective adsorption of non-target minerals such as pyrite from the molecular level through electrical repulsion and steric hindrance effects, so that efficient selective separation of copper and zinc minerals is realized under the condition of not depending on a high-alkali condition and a large number of inhibitors.

The present application belongs to the technical field of environmental protection, and particularly relates to a method for controlling formation of red tide and simultaneously reducing abundance of resistance genes and virulence factors by using natural flash zinc ore. The method comprises the following steps: first, preparing a microscale natural flash zinc ore suspension with photocatalytic activity; then, adding the suspension into seawater containing red tide algae; and finally, culturing under suitable conditions for the algae to survive, so as to achieve the purposes of controlling formation of red tide and inhibiting spread of resistance genes and virulence factors. The method for controlling formation of red tide and simultaneously reducing abundance of resistance genes and virulence factors provided in the present application utilizes visible light to drive the nano natural flash zinc ore to generate H2O2 and e ‑ and other various free radicals to attack microbial cells, so as to inhibit propagation of algae and pathogenic bacteria hosts in water, and reduce abundance of resistance genes and virulence factor genes in the process of algal bloom, thereby solving the technical problem of lack of simultaneous control of red tide, pathogenic bacteria and resistance genes in the prior art.

Discloses a combined depressant for sphalerite flotation separation and its application, the combined depressant including reducing substance and anthocyanin. It is used as a combined depressant for sphalerite in the flotation separation of chalcopyrite and sphalerite or galena and sphalerite. After crushing and grinding the raw ore, the combined collector and foaming agent are added to the ore pulp for copper-zinc or lead-zinc flotation. During the copper-zinc or lead-zinc separation process, the combined depressant is added as the sphalerite depressant, isopentyl xanthate is used as the collector of chalcopyrite or galena, pine oil is used as the foaming agent, the froth product is copper concentrate or lead concentrate, and the bottom product is zinc concentrate. The combined depressant of the disclosure has a strong inhibitory effect on sphalerite and can effectively achieve flotation separation of chalcopyrite and sphalerite or galena and sphalerite.

The application discloses a deposit type identification method based on a sphalerite trace element relationship graph neural network, and belongs to the technical field of deposit type identification. The method takes trace elements as fixed graph nodes, and first performs numerical cleaning, missing value processing, logarithmic transformation and standardization processing on an original sample matrix. In the training set range, statistical correlation strength, element combination discrimination strength and geochemical prior strength are fused to construct a composite static correlation strength matrix. The composite static correlation strength matrix is decomposed into a non-negative positive correlation matrix and a non-negative negative correlation matrix, a sample adaptive dynamic graph is constructed, and a static positive correlation graph, a static negative correlation graph and the sample adaptive dynamic graph are input into a graph neural network identification model to realize deposit type prediction, while key elements, key element relationships and graph channel response strength are output. The application can more fully express the sphalerite multi-element correlation structure and its geochemical significance, and improve the stability and interpretability of deposit type identification.

This invention discloses a flotation separation method for collecting galena and inhibiting sphalerite and pyrite, achieving efficient separation of galena from sphalerite and pyrite in a low-alkaline pulp environment, belonging to the field of mineral beneficiation technology. This invention uses N-hydroxyethylethylenediaminetriacetic acid as an inhibitor of sphalerite and pyrite at a low alkalinity of pH 7.5-9.5, and one or two of sodium diethyldithiocarbamate, sodium ethyl xanthate, and xylenol dithiophosphate as collectors for galena. Under low dosage conditions, it achieves simultaneous inhibition of sphalerite and pyrite and effective collection of galena, offering advantages of high efficiency, simple process, economy, and environmental friendliness. It is particularly suitable for silver-bearing, high-sulfur, low-grade lead-zinc ores and has broad application prospects.

The application discloses a zinc mineral inhibitor for low-alkali flotation separation of sulfide lead-zinc ore and a flotation method. The inhibitor is composed of oxidized modified plant glue, sodium sulfite and dispersant in a mass ratio of (2-3):(1.5-2):(1-2), wherein the oxidized modified plant glue is selected from oxidized xanthan gum, oxidized pectin or oxidized gum arabic. When the inhibitor is used for flotation of sulfide lead-zinc ore, under the condition of weak alkaline ore pulp with pH of 7-9, the selectivity of the inhibitor makes sphalerite hydrophilic and galena keep floatability, and lead concentrate and zinc-containing tailings are obtained through air-flotation. The application realizes high-efficiency separation of lead and zinc under low-alkali condition, and avoids the problems of equipment fouling and environmental pollution in the traditional high-alkali process.

The invention discloses preparation and application of a zinc-sulfur separation collecting agent under the low-alkali condition, and the preparation method comprises the steps that 1, collecting agent synthesis raw materials are selected, and the collecting agent synthesis raw materials comprise, by mass, 50-500 parts of ester-105, 50-500 parts of isooctyl thioglycolate, 1-10 parts of an emulsifying agent and 1000-10000 parts of water; (2) firstly, mixing the ester-105 and the isooctyl thioglycolate according to a proportion; mixing an emulsifier and water in proportion to obtain a mixture; and finally, the mixture and the emulsifier solution are mixed in proportion, and the collecting agent is obtained. The technical situation of high-alkali flotation of sphalerite in the prior art is solved; the method has the characteristics of low alkalinity, high selectivity, low dosage and low cost, and the production process is more environment-friendly.

The application discloses a combined inhibitor for low-alkali flotation separation of silver-containing lead-zinc sulfide ore and application thereof and belongs to the technical field of non-ferrous metal dressing. Sodium carbonate and water glass are added in the grinding stage to control the dispersibility and alkalinity of the ore slurry; butylamine black dithiophosphate and aniline black dithiophosphate are used as combined collectors for galena in the lead flotation stage, and the combined inhibitor simultaneously inhibits the sphalerite and pyrite, thereby reducing the pollution of zinc-sulfur minerals to the lead concentrate; copper sulfate is used to activate the sphalerite in the zinc flotation stage, and ethyl xanthate is used as a collector to recover zinc minerals, and the pyrite still maintains a stable inhibited state at this time, thereby guaranteeing the grade of the zinc concentrate. The application uses aminopimelic amide as the sphalerite and pyrite inhibitor, and combines zinc sulfate and ferrous sulfate to build a composite inhibition system, so that the lead, zinc and sulfur minerals can be efficiently separated under a weak-alkaline ore slurry environment, the associated silver and precious metals can be maximally recovered, the waste of the precious metal resources is avoided, and the comprehensive recovery of the lead, zinc and silver polymetallic minerals is realized.

The invention provides a piezoelectric electro-catalytic reforming material as well as a preparation method and application thereof. The piezoelectric electro-catalytic reforming material provided by the invention is formed by alternately arranging sphalerite (ZB) and wurtzite (WZ) sections to form a homojunction, doping an S vacancy twin crystal Zn0. 5Cd0. 5SV solid solution (T-CZSV) material and coupling a photocatalytic material cobalt stannate (Co2SnO4 and CSO); wherein the existence of the homojunction enhances the separation of photo-induced electrons and holes, and meanwhile, under the action of mechanical stress, non-uniform distribution of charges in the T-CZSV can cause spontaneous polarization, so that an internal electric field is generated, and the separation of current carriers is effectively promoted. After the T-CZSV is coupled with a photocatalytic material cobalt stannate (Co2SnO4 and CSO) which is reasonable in lattice arrangement, stable in physicochemical property and complementary in energy band structure, the light absorption range is further widened, the photon-generated carrier separation efficiency is further improved, and efficient hydrogen production is assisted.

The application discloses a preparation method of a ferrospinel floatation collector and application thereof, and belongs to the technical field of floatation collectors. First, ammonium halide is poured into water, and after being dissolved, nitrobenzene organic matter and a catalyst are added, and sufficient stirring is conducted to obtain a mixed solution A; an acyl halide compound, sodium carbonate and an organic solvent are sequentially added into the mixed solution A, and sufficient stirring is conducted, and reaction is carried out at a temperature of-20-20 DEG C to obtain the ferrospinel floatation collector. The preparation method of the ferrospinel floatation collector and application thereof have the advantages that the ferrospinel collector prepared by the application has good selective collecting effect on ferrospinel, can significantly reduce the content of pyrite and pyrrhotite in zinc concentrate, and improves the quality of the zinc concentrate.

This invention belongs to the field of mineral processing and flotation separation technology, and discloses the application and method of an oxidant-organophosphonic acid combined inhibitor in the flotation separation of copper-zinc sulfide ores. The combined inhibitor, composed of an oxidant and an organophosphonic acid reagent, is added in a stepwise manner during the flotation separation of chalcopyrite and sphalerite. Hydrogen peroxide is added first for pulp pretreatment, followed by the addition of hydroxyethylidene diphosphonic acid (HEDP), the organophosphonic acid reagent. The oxidant selectively oxidizes and regulates the surface of sphalerite, providing active sites for the adsorption of the organophosphonic acid reagent. The organophosphonic acid reagent coordinates with the metal sites on the sphalerite surface, forming a hydrophilic film and complexing activated copper ions in the pulp, achieving highly efficient and selective inhibition of sphalerite while maintaining good floatability of chalcopyrite. This invention achieves efficient separation of copper-zinc sulfide ores under medium-low alkalinity conditions, and has advantages such as good selectivity, low reagent dosage, safety and environmental friendliness, and promising industrial application prospects.