165 results about "Chalcopyrite" patented technology

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

The invention discloses a method for strengthening chalcopyrite leaching through leptospirillum ferriphilum inducers, and belongs to the technical field of mineral biological leaching. The invention discloses a method for strengthening chalcopyrite leaching through a leptospirillum ferriphilum inducer. The bioleaching process of chalcopyrite is regulated and controlled through the leptospirillum ferriphilum inducer. According to the method for strengthening chalcopyrite leaching through the leptospirillum ferriphilum inducer, through the specific regulation and control effect of the leptospirillum ferriphilum inducer, the metabolic activity and environmental tolerance of microbial communities in the chalcopyrite bioleaching process are improved, and therefore the bioleaching efficiency of chalcopyrite is remarkably improved.

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

The invention discloses an inhibitor for copper-molybdenum separation and a preparation method and application thereof.The inhibitor is a grafted copolymer DG-1 obtained after chitosan and sodium thioglycolate are grafted, the selectivity of sulfydryl to copper ions is enhanced through the product, the adsorption effect on the copper ions is enhanced, and molybdenite is not affected; secondly, a carboxyl group of a grafted product points to ore pulp and has more active sites, so that the solubility and the stability of single chitosan or sodium thioglycolate are enhanced; a third step; the copolymer is relatively simple to prepare and easy to realize, and the economic cost for inhibiting the chalcopyrite is effectively reduced. The inhibitor is used for separating copper and molybdenum and is environmentally friendly, the dosage is relatively small, and the process is simple and efficient.

The present invention belongs to the field of resources and environment, and discloses a method for promoting chalcopyrite bioleaching by in-situ depassivation: in an anaerobic environment, passivated chalcopyrite and reduced sulfur are added to a 9K culture medium, an acidophilic microbial strain is inoculated for culture, and the chalcopyrite is collected by centrifugation; the collected chalcopyrite is dried and added to a 9K culture medium, and the acidophilic microbial strain is inoculated for culture and leaching under an aerobic environment. The present invention introduces acidophilic microorganisms and sulfur into the anaerobic system, so that the dense passivation film of the chalcopyrite can be reduced and removed, allowing the copper ions in the mineral to be leached under aerobic conditions in the later stage. This not only overcomes the shortcomings of pure chemical reaction leaching, such as high energy consumption, high consumables, and environmental pollution, but also solves the problem of low utilization efficiency due to the passivation film hindering leaching during the bioleaching process, so that the chalcopyrite can be utilized to the greatest extent. This in-situ depassivation bioleaching technology has a wide range of applications, low site requirements, and can be used on a large scale industrially.

The invention provides an environment-friendly chalcopyrite inhibitor and a copper-molybdenum separation method, and belongs to the technical field of copper-molybdenum separation. The environment-friendly chalcopyrite inhibitor is a sulfur-containing histidine derivative, a unique aromatic conjugated structure of the environment-friendly chalcopyrite inhibitor can be converted into sulfydryl through thiocarbonyl tautomerization, S in the sulfydryl and N atoms which contain lone pair electrons and do not participate in conjugation in an aromatic ring cooperate with each other, copper ions in chalcopyrite can be directionally chelated, a formed chelate is of an annular structure, and the chalcopyrite inhibitor can be used for inhibiting copper ions in chalcopyrite. Chelation with molybdenum in molybdenite is avoided, and excellent selectivity is shown. The environment-friendly chalcopyrite inhibitor contains carboxyl and tertiary amino at the same time, and it is guaranteed that the environment-friendly chalcopyrite inhibitor can efficiently inhibit target minerals in a wide pH window through the two hydrophilic functional groups of different structures. Based on the specific space structure of the environment-friendly chalcopyrite inhibitor, the types of functional groups and mutual cooperation of different functional groups, efficient selective inhibition of chalcopyrite in copper and molybdenum associated ores can be achieved safely and environmentally in a wide pH range.

A rainwater garden including: a bioretention area; a rainwater collection area; and a first perforated drainage pipe. The bioretention area includes, from bottom up, a gravel layer, a transition layer, a chalcopyrite substrate layer, a biochar substrate layer, a planting layer, a cover layer, and a water storage layer. The first perforated drainage pipe is disposed in the gravel layer. The first perforated drainage pipe includes an outlet end extending to connect to the rainwater collection area; and the outlet end is flush with a top surface of the chalcopyrite substrate layer.

The invention discloses a flotation separation method for copper-molybdenum bulk concentrate and a combined inhibitor used in the flotation separation method. The combined inhibitor comprises dithionite and thiobarbituric acid. The method comprises the following steps: adding dithionite into copper-molybdenum bulk concentrate pulp to carry out reagent removal treatment, then adding thiobarbituric acid to inhibit chalcopyrite, and then adding a molybdenite collecting agent and a foaming agent to carry out flotation, so as to obtain molybdenum concentrate and copper concentrate. The combined inhibitor is non-toxic and environment-friendly, the excellent inhibition effect on the chalcopyrite can be achieved through the synergistic effect of the two inhibitors under the condition of low dosage, and the recovery rate of molybdenum and the molybdenum-copper separation effect are remarkably improved.

The invention relates to an alkenyl thionocarbamate compound as well as a preparation method and application thereof, the structural formula of the thionocarbamate compound is # imgabs0 #, R, R1 and R2 are respectively and independently one of alkyl, aryl, ester group and halogen; r3 is one of alkyl, alkenyl and aryl; the compound can be used as a sulphide mineral collecting agent and shows excellent performance in the mineral separation process of sulphide minerals which are difficult to separate, such as chalcopyrite and pyrite.

The present invention provides a method for separating molybdenite and chalcopyrite based on surface oxidation, belonging to the technical field of mineral separation. In this method, molybdenite and chalcopyrite are ground finely. The ground materials are taken and added with water and put into the flotation cell of a flotation machine. After adding hydrogen peroxide and stirring, ultrasonic treatment is carried out for 3 - 5 minutes. After the treatment, the pH of the pulp is adjusted with a pH adjuster, collector kerosene and foaming agent MIBC are added and stirred for 1 - 5 minutes, and then air flotation is carried out to obtain concentrate and tailing products. Under the action of an oxidant, the surface of molybdenite is oxidized, and the oxidation products generated on the surface of molybdenite will fall off during ultrasonic treatment. This oxidation product will inhibit the flotation of chalcopyrite but will not inhibit the flotation of molybdenite. This method can achieve the flotation separation of molybdenite and chalcopyrite without using inhibitors, thereby reducing the reagent cost.

The present invention discloses a flotation separation method for inhibiting molybdenite and galena in the flotation of chalcopyrite, realizing the efficient separation of chalcopyrite from molybdenite and galena, and belonging to the technical field of mineral separation. During the flotation separation process, under the conditions of a pH of 4 - 10, an inhibitor dosage of 50 - 200 mg / L, a collector Z-200 dosage of 20 - 40 mg / L, and an MIBC / No. 2 oil dosage of 10 - 20 mg / L, a flotation process of first bulk flotation and then concentrate separation is adopted; Quercetin is widely present in nature and is currently mainly used in the food industry and the clinical industry. It can be obtained by plant extraction and is an ideal inhibitor for molybdenite and galena; Under these process conditions, quercetin inhibits the floatability of molybdenite and galena, realizing the effective separation of copper-molybdenum and copper-lead. This method has advantages such as a wide applicable pH range, good separation effect, and environmental friendliness, and has broad prospects for popularization and application.

The invention belongs to the technical field of copper-sulfur ore flotation, and particularly relates to a novel double-ligand chalcopyrite collecting agent and a preparation method and application thereof. According to the collecting agent, an intermediate oxalyl diisothiocyanate is mainly prepared from oxalyl chloride and thiocyanate through a thiocyanate method, and then series amine / alcohol is added through a one-pot method to prepare the collecting agent. According to the collecting agent, more stable double-bond adsorption can be formed on the surface of chalcopyrite, and the formed double-chelate ring structure is more stable than single-bond adsorption of xanthate, black powder and the like of a traditional chalcopyrite collecting agent. The collecting agent has higher collecting capacity and excellent selectivity, efficient copper-sulfur separation can be achieved under the low-alkali condition, the preparation technology of the collecting agent has the advantages of being simple, easy to operate and the like, and chalcopyrite flotation and separation of chalcopyrite and pyrite can be promoted.

The present invention provides a flotation depressant for separating chalcopyrite and molybdenite, and a chalcopyrite and molybdenite beneficiation method, specifically relating to the field of mineral processing technology. The flotation depressant comprises sodium thioglycolate, a hydroxycarboxylic acid homologue, and a reducing agent in a mass ratio of (20-60):(1-5):(1-5). The hydroxycarboxylic acid homologue comprises at least one of 3-mercaptopropionic acid, β-mercaptopropionic acid, thiopropanoic acid, mercaptopropionic acid, and thiolactic acid. The flotation depressant provided by the present invention is economical to use and easy to add, effectively achieving efficient separation of molybdenite and chalcopyrite. Furthermore, the flotation depressant successfully solves the problem of excessive copper impurities in molybdenum concentrate when using only sodium thioglycolate, thereby reducing the overall cost of the depressant during flotation. The flotation depressant is not only highly efficient, but also clean and safe, effectively solving the difficulties in the separation of chalcopyrite and molybdenite.

A system for dynamic oxidation of a heap of copper ore includes a “process island” for formulating and dispensing oxidizing reactive mixtures having predetermined compositions, and irrigating the heap with the mixtures to progressively transform the ore and maintain conditions for enhanced recovery of metal by heap leaching, solvent-extraction and electrowinning. In embodiments, the system is adapted to obtain copper metal from the refractory copper mineral chalcopyrite.

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.

This invention relates to the field of mineral processing technology, specifically to an environmentally friendly copper-molybdenum separation inhibitor, its preparation method, and its application. The method includes: mixing starch and formamide, stirring at room temperature, cooling in an ice-water bath at -5°C, slowly adding chlorosulfonic acid at this temperature to initiate a sulfonation reaction, neutralizing to pH 7-8 with sodium hydroxide solution after the reaction, adding anhydrous methanol to precipitate the product, and washing and drying to obtain the sulfonated anionic starch polymer DGSS. The inhibitor is applied to the flotation separation of copper-molybdenum mixed concentrates, combined with a closed-circuit process of one roughing, one scavenging, and four cleaning stages, employing a gradient reagent reduction and staged kerosene replenishment system from roughing to cleaning. This allows for selective inhibition of copper sulfide minerals such as chalcopyrite at extremely low dosages, with minimal impact on the floatability of molybdenite. It completely avoids the use of toxic substances such as cyanide, Knox reagent, or sodium sulfide, exhibiting good selectivity, low reagent consumption, environmental friendliness, and a simple preparation process that is easy to industrialize.

The invention relates to an inhibitor for efficiently separating copper and sulfur under a low-alkalinity condition, a flotation reagent and a flotation method. The inhibitor is a compound as shown in a formula I (formula I), wherein R1, R2, R3 and R4 are respectively and independently selected from one of-R5X,-X,-H and-N + R6, R5 is alkyl of C1-C10, naphthenic base of C3-C10 or heterocyclic group of C3-C10, and the ring of the heterocyclic group is provided with or not provided with a substituent group; x is one of F, Cl, Br, I, tertiary amine positive ions, nitro, cyano, sulfo, formyl, acyl and carboxyl; r6 is a C1-C5 alkyl group or a C3-C5 cycloalkyl group; the inhibitor is low in viscosity and good in fluidity, pyrite and chalcopyrite in complex copper sulfide ore copper-sulfur ore can be effectively separated under the low-alkalinity condition, and the separation effect is remarkable.

The present invention discloses a pink ceramic glaze and a process for preparing ceramic products therefrom, belonging to the technical field of ceramic glazes. The pink ceramic glaze of the present invention comprises a glaze main body and a pink ceramic pigment. Among them, the glaze main body comprises the following components: Longyan kaolin, potassium feldspar, sodium feldspar, almandine, andalusite, baddeleyite, cancrinite, chiastolite, silicon dioxide, chalcopyrite, cordierite, dolomite, and sodium humate. The pink ceramic products prepared therefrom use the glaze main body as the main material, in combination with the pink ceramic pigment, that is, the colorant uses a commercially available pink ceramic pigment. Moreover, the glaze main body is applicable to most of the pink ceramic pigments, is easier to operate in actual production, has a remarkable visual effect on the glaze surface, and at the same time has excellent properties such as glaze surface strength.

This invention belongs to the field of mineral flotation technology, and discloses a flotation collector for non-ferrous metal sulfide ores, its preparation method, and its application. The collector uses O,O-dialkyldithiophosphate as a starting material, and reacts sequentially with a halocarboxylic acid ester, hydrazine hydrate, potassium hydroxide, and carbon disulfide in anhydrous ethanol in a three-step reaction to obtain the target product, O,O-dialkyldithiophosphate hydrazide-N′-dithiocarbamate potassium. Its molecular structure simultaneously contains three active groups: a dithiophosphate group, an hydrazide group, and a dithiocarbamate group. This invention achieves efficient process connection and smooth transition by optimizing the material ratio, temperature, and time of each reaction step, and has advantages such as mild reaction conditions, simple operation, few side reactions, high yield, and stable product. The prepared collector exhibits excellent collecting performance and good selectivity for non-ferrous metal sulfide ores such as chalcopyrite, and is suitable for widespread application in sulfide ore flotation processes.

The present invention relates to a quantum dot synthesis method for synthesizing chalcopyrite-based quantum dots, the quantum dot synthesis method comprising: a nanoparticle production step for reacting a group I element and a group VI element to produce nanoparticles; and a cation diffusion step for diffusing group III element cations into the nanoparticles by heat treatment. Accordingly, there is provided a method for synthesizing quantum dots having good light-emitting characteristics having uniform particle diameters but not having compositional inhomogeneity.

The present application relates to the technical field of mineral flotation reagent, in particular to a chalcopyrite flotation composite collector and application thereof; the chalcopyrite flotation composite collector is prepared by mixing a first collector and a second collector at a mass ratio of 5-7:1.0-1.5; the prepared first collector is applied to the field of chalcopyrite flotation, and has good flotation performance and higher selectivity, and significantly improves the recovery rate of chalcopyrite flotation; the obtained second collector contains multiple sulfur-containing and oxygen-containing functional groups in the molecule, has good collecting ability and selectivity for chalcopyrite, and can significantly improve the flotation recovery rate of chalcopyrite; in addition, the mutual cooperation between the first collector and the second collector can further improve the recovery rate and grade of chalcopyrite; under the condition of adding a small amount of lime, a copper concentrate with high copper grade is obtained, the pH value of tailing backwater is also greatly reduced, the alkalinity standard requirement of direct discharge of backwater is met, and the sustainable development of the environment is beneficial.

The application discloses a magnetic separation process for separating fine-grained copper-molybdenum mixed concentrate, and comprises the following steps: roasting and deoiling the fine-grained copper-molybdenum mixed concentrate to obtain copper-molybdenum mixed dry concentrate; preparing a slurry by mixing the copper-molybdenum mixed dry concentrate and water, and sequentially adding an inhibitor, a magnetic intensifier, a strong oxidant and an adjusting agent into the slurry to obtain a copper-molybdenum mixed slurry; and feeding the copper-molybdenum mixed slurry into a wet high-intensity magnetic separator to perform copper-molybdenum magnetic separation, so as to obtain copper concentrate and molybdenum concentrate. The inhibitor, the magnetic intensifier, the strong oxidant and the adjusting agent jointly solve the problem of easy agglomeration of chalcopyrite and molybdenite. During the magnetic separation process of the wet high-intensity magnetic separator, a large amount of flushing water needs to be added, and the reagents on the surface of the copper concentrate can be washed away by the flushing water, so that a good reagent removal effect can be achieved. The obtained magnetic separation concentrate is copper concentrate (copper content is greater than or equal to 12%), which not only increases the economic benefit of the product, but also improves the resource utilization rate.

A photovoltaic structure includes: a hole-selective contact comprising an anodized aluminum layer overlaying a different electrode metal and a plurality of contact vias that extend through the anodized aluminum layer to the different electrode metal, wherein locations of the plurality of contact vias define an ordered array; an absorber comprising a chalcopyrite (Ag,Cu)(Ga, In)S,Se:Alk, where Alk represents at least one alkali element, the absorber comprising at least a residual of a contiguous nucleation template over the anodized aluminum layer; an electron-selective contact; and a plurality of nanorods located in the plurality of contact vias, the plurality of nanorods providing ohmic contacts between the hole-selective contact and the different electrode metal at their interface at a bottom of each contact via, and comprising at least a residual of at least one surfactant and at least a residual of at least one minority alloy constituent.

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 discloses a method for preparing high-purity molybdenum disulfide through impurity removal of low-grade molybdenum concentrate, and belongs to the technical field of mineral purification and comprehensive utilization of resources. The method comprises two key steps of chloridizing roasting of a microwave reinforced composite chloridizing agent and double-frequency ultrasonic reinforced acid leaching. Firstly, a low-temperature co-melting system is constructed through a composite chlorinating agent, the chlorination reaction temperature is remarkably reduced, selective chlorination conversion of impurities is achieved under the action of a microwave field, and the impurities such as chalcopyrite and pyrite which are difficult to effectively remove through a conventional method are converted into chlorides easy to remove; and therefore, the impurity removal difficulty of the subsequent leaching procedure is greatly reduced. And then, double-frequency ultrasonic synergistic enhancement is introduced in the acid leaching process, and deep purification of the minerals is achieved through the surface purification effect of high-frequency ultrasonic and structural dissociation and mass transfer enhancement of low-frequency ultrasonic. According to the method, the removal efficiency of impurities such as iron, copper and silicon in the low-grade molybdenum concentrate can be remarkably improved, the removal rates of the iron, the copper and the silicon all reach 98% or above, and particularly the technical problem that the impurities of the chalcopyrite are difficult to remove efficiently is solved.

The application discloses a method for lime-free and acid-free copper-sulfur flotation separation, wherein a combined inhibitor for copper-sulfur separation comprises ferrous sulfate and amygdalin, and is used as a pyrite inhibitor in flotation separation of chalcopyrite and pyrite.The combined inhibitor ferrous sulfate and amygdalin, a collector and a foaming agent are added to a raw ore after crushing and grinding to perform a copper flotation operation, and after the copper flotation operation, a combined activator sodium percarbonate and copper sulfate, a combined collector and a foaming agent are added to the ore pulp to perform a sulfur flotation operation.The combined inhibitor ferrous sulfate and amygdalin has a strong inhibiting effect on pyrite, and can effectively realize flotation of chalcopyrite; the combined activator sodium percarbonate and copper sulfate has a good de-inhibiting and activating effect on pyrite, and can effectively realize flotation of pyrite, thereby reducing the mineral processing cost while enhancing the copper-sulfur separation effect, and having a good application prospect.

The application discloses a combined collector for chalcopyrite flotation and application of the combined collector in chalcopyrite flotation, and also discloses a preparation method of the combined collector, and belongs to the technical field of flotation separation of mineral processing. The combined collector is prepared by mixing ethion and an emulsifier according to a certain proportion and water, and then dispersing the mixture in an ultrasonic crusher to form a stable light yellow emulsion. The emulsion can be applied to the flotation process of chalcopyrite, and under the condition of obtaining similar flotation indexes, the combined collector of the application can be used in a significantly reduced amount compared with the amount of ethion, thereby effectively reducing the consumption of reagents, improving production efficiency, and reducing carbon emission in the separation process by reducing the amount of reagents.

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.

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.

The present invention discloses C 14 The invention discloses a method for regulating acidophilic bacteria leaching, which belongs to the field of biological leaching technology. The invention finds that different types of AHL signal molecules can have different effects on the growth and leaching of acidophilic bacteria at different concentrations and different addition times. The signal molecule control experiment confirms that C 14 At certain concentrations, the HSL signal molecule can promote and enhance the production of extracellular polysaccharides and fulvic acid by the strain, as well as its ability to adhere to minerals in the later stages of leaching, thereby increasing the strain's growth rate and mineral leaching efficiency. By regulating the concentration of the signal molecule, the rate of acidophilic leaching and its growth can be adjusted. This method is simple to operate, has low production costs, and is environmentally friendly. This method solves the problem of difficult control during mixed acidophilic leaching, promotes the industrial development of biometallurgical technology, and improves leaching production efficiency.