90 results about "Chalcopyrite" patented technology

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.

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.

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.

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.

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 application relates to a combined collector for high-arsenic chalcopyrite flotation and application thereof, and belongs to the technical field of mineral flotation separation. ‑ The combined collector is prepared by combining a flotation reagent with R-OCSS functional groups and a flotation reagent with R-NCS functional groups, wherein R is a hydrocarbon group with 2-4 carbon atoms. Meanwhile, the application also provides an application method of the combined collector in high-arsenic chalcopyrite flotation. Under the condition of the same amount of reagent, the combined collector has better selectivity and separation efficiency, can greatly improve the recovery grade and recovery rate of chalcopyrite, can better utilize mineral resources, improve the benefit, and reduce the pollution to the environment.

The invention discloses a polycarboxylic sulfur-nitrogen carboxylic ester compound as well as a preparation method and application thereof. The polycarboxylic sulfur-nitrogen carboxylic ester compound has a structure of R1-S-C (= S)-N-R2-COOR3, and in the structure, R1 is a C1-C5 carboxyl group, R2 is a C1-C6 alkyl group, and R3 is any one of H < + > or a C1-C6 alkyl group. When the polycarboxylic sulfur-nitrogen carboxylate compound is added into a copper-molybdenum mixed ore flotation system, copper minerals can be selectively inhibited under the weakly alkaline condition. Compared with a traditional inhibitor, the multi-carboxyl sulfur-nitrogen carboxylic ester compound has the outstanding advantages that the synthesis route is simple, raw materials are easy to obtain, and the environment compatibility is excellent, the surface wettability difference of copper-molybdenum minerals can be remarkably enlarged through the selective inhibition effect of the compound, and efficient separation of chalcopyrite and molybdenite in associated ore is achieved.

The application discloses a method for separating copper-molybdenum mixed concentrate by advanced oxidation flotation, which comprises the following steps: S1, adding the copper-molybdenum mixed concentrate into a flotation tank with water, and adding peroxysulfate; S2, adding a divalent iron salt to the treated ore pulp, and then adding a collector and a foaming agent, so as to obtain a molybdenum rough concentrate and a copper rough concentrate by flotation; and S3, obtaining a molybdenum concentrate by 4-5 times of cleaning of the molybdenum rough concentrate, and obtaining a copper concentrate by 2-3 times of scavenging of the copper rough concentrate. By adding the peroxysulfate and the divalent iron salt, the application can generate sulfate radicals SO4 ‑ · and hydroxyl radicals ·OH, which have the characteristics of high activity and strong oxidizing property, can effectively decompose organic collectors in the copper-molybdenum mixed concentrate, and can reduce the difficulty of copper-molybdenum separation; and can also oxidize chalcopyrite to generate hydrophilic substances such as oxides and sulfates on the surface of the chalcopyrite, so that the chalcopyrite is inhibited; and the hydrophobicity of molybdenite can be restored by adding the collector, so that the copper-molybdenum efficient and clean flotation separation can be realized.

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.

The invention relates to a method for flotation separation of copper-molybdenum sulfide ore, belongs to the technical field of flotation, and solves the technical problems of low flotation efficiency, high production cost and serious environmental pollution in a copper-molybdenum sulfide ore flotation method in the prior art. A method for flotation separation of copper-molybdenum sulfide ore comprises the following steps that (1) copper-molybdenum bulk concentrate is subjected to fine grinding treatment, and ore powder is obtained; (2) mixing the mineral powder with water, and adjusting the pH value of the ore pulp; (3) adding a collecting agent, an inhibitor and a foaming agent into the ore pulp; and (4) air inflation flotation is carried out, a foam product is molybdenum concentrate, and a tank bottom product is copper concentrate. The sulfydryl group and the sulfonic acid group of the adopted sulfydryl sulfonic acid compound inhibitor can greatly enhance the hydrophilicity of the chalcopyrite surface, and the collecting agent is added before the sulfydryl sulfonic acid compound inhibitor is added; and the effect of selectively separating the copper-molybdenum sulfide ore by using the sulfydryl sulfonic acid compound inhibitor can be further improved.

The invention discloses an anionic chalcopyrite high-entropy catalytic material and a preparation method thereof, and belongs to the technical field of photoelectric catalytic materials. The chemical general formula of the anionic chalcopyrite high-entropy catalytic material is CuGaX2; wherein X is a non-metal anion. And the non-metal anions comprise at least five different elements of B, C, N, O, S, Se, Te, F, Cl and Br. The multi-element anions are cooperatively bonded with a Cu / Ga metal center and participate in construction of a conduction band and a valence band, so that the separation efficiency of photon-generated carriers is optimized; lattice distortion is induced by the high-entropy effect to form high-density active sites; uniform dispersion of atomic-scale elements is realized through one-step solid-phase synthesis. The obtained material shows high catalytic activity and stability under simulated sunlight, and is suitable for the application fields of hydrogen production by solar photolysis of water, CO2 reduction and the like; meanwhile, the material elements are uniformly dispersed in the atomic scale, the product purity is high, the process is simple and convenient, the period is short, the cost is low, and the large-scale production potential is achieved.

The application discloses application of a combined inhibitor of copper-molybdenum mixed concentrate in copper-molybdenum flotation separation. The application firstly carries out fine grinding and medicine removing on the copper-molybdenum mixed concentrate; adds the combined inhibitor to inhibit chalcopyrite during the fine grinding process; then adds a collector and a foaming agent to obtain a molybdenum rough concentrate and a copper rough concentrate through roughing; the molybdenum rough concentrate is obtained after being refined, and the copper rough concentrate is obtained after being scanned. The combined inhibitor comprises thiosemicarbazide and thiolactic acid. The dosages of the water-soluble thiosemicarbazide and the thiolactic acid are 0.2-0.5 kg and 0.1-0.2 kg respectively per ton of the copper-molybdenum mixed concentrate. The application can replace the use of toxic inhibitors to reduce environmental pollution, and significantly improve the flotation separation efficiency of copper and molybdenum, and realize efficient separation of copper and molybdenum concentrates.

The invention belongs to the technical field of mineral flotation, and discloses a flotation collecting agent for non-ferrous metal sulfide ore and a preparation method and application thereof.O, O dialkyl dithiophosphate serves as an initial raw material of the collecting agent, and the target product O, O dialkyl dithiophosphate, halogenated carboxylic ester, hydrazine hydrate, potassium hydroxide and carbon disulfide are sequentially subjected to three-step reaction in absolute ethyl alcohol to prepare O, O dialkyl dithiophosphate; the molecular structure of the N, O-dialkyl phosphorodithioic acid hydrazide-N '-potassium dithioformate simultaneously contains three active groups, namely a phosphorodithioate group, a hydrazide group and dithioformate. By optimizing the material ratio, temperature and time of each step of reaction, efficient connection and stable transition of the process are realized, and the method has the advantages of mild reaction conditions, simplicity and convenience in operation, few side reactions, high yield, stable product and the like. And the prepared collecting agent shows excellent collecting performance and good selectivity on non-ferrous metal sulfide ores such as chalcopyrite, and is suitable for popularization and application in a sulfide ore flotation process.

This invention discloses a combined inhibitor suitable for the flotation separation of galena and chalcopyrite, and its application method, belonging to the field of mineral processing technology. The combined inhibitor comprises 20%-50% iodine, 15%-30% tannic acid, and 30%-60% 1,3-bis(tris(hydroxymethyl)methylamino)propane. Compared with a single iodine inhibitor, the dosage of the combined inhibitor is reduced by 0.3-0.4 kg / t. The method described in this invention is simple, does not require pH adjustment, has no special temperature requirements, is non-toxic and environmentally friendly, and has strong applicability. The application of ultrasonic technology can significantly shorten the inhibition time and reduce the dosage of reagents, thereby improving the utilization rate of mineral resources and the overall efficiency of enterprises.

This invention relates to a flotation depressant and flotation method for recovering copper from magnetically separated iron tailings, specifically in the field of mineral flotation technology. The flotation depressant comprises: sulfonated modified tannin, sodium cyanurate, carboxymethyl chitosan, and carbonates. The flotation depressant provided by this invention, through the synergistic effect of its components, achieves highly efficient selective inhibition of pyrite at a pulp pH of 8-9, while having no significant inhibitory effect on chalcopyrite. It is suitable for low-grade, fine-grained, disseminated magnetically separated iron tailings, yielding copper concentrate with a Cu grade ≥19.22% and a recovery rate ≥72.50%. This invention solves problems such as foaming and stickiness, equipment scaling, and difficulty in meeting alkalinity standards in traditional high-alkali lime processes. It has advantages such as low alkali content, high efficiency, and environmental friendliness, and has broad prospects for industrial application.

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

The application relates to a method for regulating and separating arsenic and valuable metals in smelting flue gas, and belongs to the field of clean production technology. After chalcopyrite powder is mixed into smelting flue gas, on one hand, metal oxides are converted into sulfates, and on the other hand, formed arsenate can be dissociated, arsenic is volatilized in the form of As2O3, and metals are converted into corresponding sulfates and oxides to return to a smelting system, formation of arsenate in the flue gas is inhibited, the purpose of separating arsenic and valuable metals is achieved, and the efficiency of dry collection of As2O3 in the flue gas is improved. Formation of arsenic-containing dust is reduced, and production cost of a smelting enterprise is saved.

The invention relates to the technical field of non-ferrous metal beneficiation, in particular to a copper-molybdenum bulk concentrate flotation separation inhibitor, a preparation method thereof and a beneficiation method for copper-molybdenum bulk concentrate separation. The inhibitor comprises D-erythorbic acid and sodium ethylene diamine tetramethylene phosphonate. D-erythorbic acid is used as a strong reducing agent, elemental sulfur and high-valence metal ions generated on the surface of the chalcopyrite due to oxidation or adsorption of the collecting agent can be rapidly reduced, a hydrophobic collecting agent adsorption layer is destroyed, and efficient'reagent removal 'is achieved. Sodium ethylenediamine tetramethylene phosphonate is a polydentate organic phosphonic acid chelating agent, and four phosphonic acid groups of the sodium ethylenediamine tetramethylene phosphonate and Cu < + > / Cu < 2 + > exposed on the surface of the chalcopyrite can form an extremely stable multi-core chelate. The firm adsorption layer enables hydrophilic phosphonic acid groups to face ore pulp, so that the surface of the chalcopyrite is strongly hydrophilic and is deeply inhibited, the two agents do not adsorb molybdenite at all, and under the cooperation of the two agents and under the condition that the using amount of sodium sulfide is low, copper sulfide minerals are effectively inhibited, and efficient separation of copper and molybdenum is achieved.

This application provides a method for flotation separation of chalcopyrite and pyrite, relating to the field of mineral flotation. The method involves mixing and flotation of the minerals to be processed, including chalcopyrite and pyrite, with a chalcopyrite collector to obtain chalcopyrite concentrate and pyrite tailings. The general structural formula of the chalcopyrite collector is: [Formula omitted]. This chalcopyrite collector utilizes the high selective affinity of its propyne ester group for copper-active sites on the chalcopyrite surface and its inertness to iron sites on the pyrite surface, achieving precise identification and collection of chalcopyrite from the molecular structure of the reagent, significantly improving the grade and recovery rate of the copper concentrate. The R group is a hydrophobic group facing the pulp, significantly enhancing the surface hydrophobicity of the chalcopyrite particles, thereby enabling them to adhere to flotation bubbles and float.

Microbial-assisted heap leaching of fragments or agglomerates of fragments of copper-containing sulfidic ores, such as chalcopyrite ores, and copper-containing sulfidic waste materials is disclosed. A heap leaching method includes controlling the sulfate concentration in a leach liquor. When heap leaching includes using agglomerates, a method of forming agglomerates includes adding the feed materials at, or close to, the inlet end, typically no more than 40%, typically no more than 30%, more typically no more than 20%, of the length from the inlet end of the agglomeration unit.

The present application relates to a chalcopyrite recovery prediction method. The method comprises generating a multi-dimensional feature vector using the operating parameters of chalcopyrite flotation, and constructing the phase transition characteristics of the mineral interface using a continuous activation function; estimating the theoretical recovery rate according to the type of collector used, the type and concentration of ions in the water environment, and the pH value; mapping the theoretical recovery rate to a Logit anchor point in the unbounded real number space through a logarithmic probability Logit function; using a table prior fitting network TabPFN based on the Transformer architecture, taking the multi-dimensional feature vector and the phase transition characteristics as the input of the network TabPFN, and taking the Logit anchor point as the condition to predict the nonlinear residual in the unbounded real number space; generating a controlled residual by asymmetrically constraining the nonlinear residual; and obtaining a corrected recovery rate by superimposing the controlled residual and the theoretical recovery rate. The corrected recovery rate obtained by the method is more accurate than the recovery rates predicted by the two types of models currently available, thus solving the problems of the prior art.