177 results about "Copper sulfide" patented technology

The invention provides a cyanide-containing wastewater resource recovery and cyclic utilization method, and belongs to the technical field of environmental protection and water treatment. According to the method, firstly, copper is collected through sulfuration under the weak acid condition with the pH being 5-6, so that a copper-cyanogen complex ([Cu (CN) 43-]) in wastewater is converted into a mixed material of copper sulfide (CuS) and cuprous cyanide (CuCN), and primary recovery of copper is achieved; and then, adding a pH regulator 2 to control the pH of the reaction system to be 9-11, adding a separation agent to control the ORP of the reaction system to be-400mV to-200mV, and carrying out a separation reaction. In the process, cuprous cyanide reacts with free cyanide (CN <->) to generate a soluble copper-cyanogen complex, and copper sulfide is retained, so that cuprous cyanide is accurately separated from the copper-containing material, the content of cyanide in the material is reduced, and the obtained copper-containing material meets the requirements of industrial product quality standards and pollution control standards; the problems that in the prior art, the cyanide content in the copper-containing material obtained by recycling copper from the cyanide-containing wastewater exceeds the standard, and the environmental risk is high in storage, transportation and comprehensive utilization are solved.

The invention relates to the technical field of mineral processing, and particularly provides a combined reagent system for flotation and magnesium reduction of talc-containing copper-molybdenum ore and application of the combined reagent system. The combined reagent system comprises a flotation collecting agent (faint yellow to orange transparent liquid, 40%-50% of active ingredients and less than or equal to 3% of free alkali) with active ingredients in the formula 1 and a flotation depressing agent (light yellow powder, extracellular polysaccharide extract of xanthomonas, the weight-average molecular weight of 1000-1500000 Daltons and rich in hydroxyl, carboxyl and pyruvic acid groups) with a structural formula in the formula 2, and the flotation depressing agent comprises extracellular polysaccharide extract of xanthomonas, the weight-average molecular weight of xanthomonas and the weight-average molecular weight of xanthomonas and is rich in hydroxyl, carboxyl and pyruvic acid groups. Through the synergistic adsorption effect of the combined reagent, the flotation grade and the recovery rate of the copper sulfide molybdenum ore are remarkably improved under the condition that the pH is 8-11. The combined reagent system has the advantages of being high in flotation efficiency, high in selectivity, low in reagent cost, environmentally friendly, high in industrial applicability and the like.

A beneficiation method for improving a grade of a magnesium-containing copper sulfide ore concentrate includes: crushing and grinding an ore to a fineness degree allowing 55% to 65% of particles to pass through a 0.074 mm sieve, adding an adjusting agent lime, collecting agents butylxanthate and kerosene, and a foaming agent methyl isobutyl carbinol (MIBC) to obtain a copper-molybdenum-sulfur mixed concentrate; re-grinding the copper-molybdenum-sulfur mixed concentrate to a fineness degree allowing 75% to 82% of particles to pass through a 0.048 mm sieve, adding lime, a magnesium-containing silicate inhibitor, a collecting agent 1, and MIBC to obtain a copper-molybdenum mixed concentrate; and adding sodium sulfide, kerosene, and MIBC to the copper-molybdenum mixed concentrate to obtain a high-grade copper concentrate. The beneficiation method adopts mixed flotation of copper-molybdenum, regrinding for separating copper and molybdenum from sulfur, and magnesium removal from a copper concentrate to allow quality improvement for the copper concentrate.

The invention discloses a method for extracting copper fine powder by flotation of copper-containing ore, which belongs to the technical field of mineral processing, and comprises the following steps: after copper-containing raw ore is crushed, ground and classified by a cyclone, overflow enters flotation, and settled sand is returned for regrinding; sodium carbonate is added into graded overflow to adjust the pH, a sodium hexametaphosphate-polyacrylamide composite dispersant is added, and copper sulfate is added and stirred after low-temperature microwave heating; gradient flotation is conducted, specifically, copper sulfide is roughly selected, the pH is adjusted, an amino-sulfonic acid group synergistic modified layered double metal hydroxide / cobalt ferrite composite collecting agent is added, and rough concentrate 1 is obtained through high-frequency pulse air inflation flotation; copper oxide roughing is conducted, clear water is supplemented to adjust the pH, and a collecting agent is supplemented to obtain rough concentrate 2; scavenging is performed for three times, a collecting agent is added for flotation, and concentrate returns to the previous stage; the rough concentrates are combined, and magnetic impurities are removed through high-gradient magnetic separation to obtain magnetic concentrates; and carrying out microbiological leaching on tailings to recover copper. The composite collecting agent is prepared through layered double hydroxide carrier synthesis, amino modification, sulfonic acid group grafting and cobalt ferrite anchoring.

The invention provides a method for co-processing multi-source copper-based waste through copper concentrate, and relates to the field of metal smelting. The copper concentrate and the copper-based waste are subjected to first mixing, and a mixture is obtained; under the oxygen-containing atmosphere, the mixture is smelted, and matte and smelting slag are obtained; the matte and the silicon-based slag former are subjected to first blowing to obtain first blowing slag; carrying out second mixing on the first converting slag and a reducing agent, and carrying out second converting to obtain crude copper; the copper concentrates comprise copper sulfide concentrates and copper oxide concentrates. Copper concentrate matte smelting and copper-based waste pyrogenic smelting are combined together, the problems that the copper-based waste smelting scale is small, and furnace burning is caused by overburning are solved, and the problem that a slag former is additionally added in copper concentrate matte smelting is solved. Through collaborative smelting, valuable metals such as copper, gold and silver enter matte, iron, aluminum and silicon in the copper-based waste enter smelting slag, and a silicon-based slag former and a reducing agent are added when the matte is blown, so that the slagging function is realized, and the valuable metals in the waste are recovered.

The invention belongs to the field of flotation, and particularly relates to a composite inhibitor for copper sulphide ore, an inhibition method, a copper-molybdenum separation method and a flotation reagent thereof.The composite inhibitor for the copper sulphide ore comprises a component A, a component B, a component C and a component D according to the weight ratio of (3-7): (1-2): (1-2): (1-3); wherein the component A is a compound shown in a formula 1 (1); the component B is a compound shown in a formula 2; the component C is konjac mannan; component D is a compound represented by formula 3. The research shows that the component A and the component D are innovatively combined, and flotation of the copper sulphide ore can be accidentally inhibited with high selectivity on the basis of combination and synergy of special groups between the component A and the component D.

The invention relates to the technical field of non-ferrous metal beneficiation, in particular to a flotation reagent composition for recycling micro-fine particle copper sulfide from copper oxide acid leaching residues and a beneficiation method of the flotation reagent composition. The flotation reagent composition for recovering copper sulfide from copper oxide acid leaching residues is characterized by comprising a collecting agent, a hydrophobic agglomeration agent and a foaming agent, and the collecting agent is ethyl thioacetate; the hydrophobic agglomeration agent is prepared from octadecyl triethoxy silane and kerosene; and the foaming agent is selected from terpilenol, methyl isobutyl carbinol or sec-octanol. The ethyl thioacetate serving as a collecting agent is stable in chemical property in an acid environment, weak in gangue mineral collecting capacity and good in selectivity in the copper sulfide mineral flotation process, and therefore the grade and the recovery rate of obtained copper sulfide concentrate are higher.

The invention discloses a method for comprehensive recovery of lead-tin white soot containing arsenic and zinc and harmless vitrification of arsenic and a method for preparing an arsenic glass clarifying agent. The method comprises the steps of first-stage acid leaching, second-stage acid leaching, copper sulfide precipitation, zinc arsenate precipitation, alkaline leaching, calcium arsenate precipitation, calcium arsenate drying and harmless vitrification of arsenic. According to the method, the zinc raffinate acid liquor for zinc extraction is adopted for acid leaching, zinc in the zinc raffinate acid liquor can be recycled, sulfuric acid in the zinc raffinate acid liquor can be utilized, and two-stage acid leaching is conducted in sequence, so that the leaching rate of arsenic, zinc and copper is increased, the separation effect of valuable metal such as arsenic, zinc and copper from lead and tin is improved, and the recycling grade of lead and tin in the soot is improved; the processes of copper sulfide precipitation, zinc arsenate precipitation, alkaline leaching and calcium arsenate precipitation are adopted in sequence, and copper, zinc and arsenic in the leachate are extracted respectively; the arsenic-containing glass clarifying agent which is economic and environment-friendly is prepared from calcium arsenate extracted from the ash, and harmless resourceful treatment of arsenic in the white ash is realized.

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.

Provided is a method for separating impurities and cobalt without using an electrolysis process from a cobalt chloride solution containing impurities and producing a high purity cobalt sulfate. The production method for cobalt sulfate includes: a copper removal step (S1) of adding a sulfurizing agent to a cobalt chloride solution containing one or more impurities of copper, zinc, manganese, calcium, and magnesium and generating a precipitate of sulfide of copper to separate to remove copper; a neutralization step (S2) of adding a neutralizer or a carbonation agent to a cobalt chloride solution having undergone through the copper removal step (S1) and generating cobalt hydroxide or basic cobalt carbonate to separate magnesium; a leaching step (S3) of adding sulfuric acid to the cobalt hydroxide or the basic cobalt carbonate to obtain cobalt sulfate solution; and a solvent extraction step (S4) of bringing an organic solvent containing an alkyl phosphoric acid-based extractant to the cobalt sulfate solution and extracting zinc, manganese, and calcium into the organic solvent to separate to remove zinc, manganese, and calcium. These steps are sequentially executed.

The application discloses an upper critical solution temperature responsive mesoporous silicon and a preparation method and application thereof, and is characterized in that: mesoporous silicon is coated on the outside of copper sulfide nanoparticles (CuS NPs), and then the coated CuS NPs are subjected to amination by using an APTES solution, and then a temperature-sensitive material PEG-p(AAm-co-AN) is grafted to form the upper critical solution temperature responsive mesoporous silicon. The application has the advantages of simple method, easy operation and mild reaction condition; the final product has good stability, can be used for loading a chemotherapeutic drug doxorubicin hydrochloride, and can realize drug controlled release; has temperature response drug release performance, and the phase transition temperature of the carrier is 43 DEG C, which is suitable for the microenvironment of tumor tissues; can be subjected to photothermal therapy under the irradiation of a 980nm laser, and realizes the synergistic effect of photothermal therapy and chemotherapy.

The invention discloses composite hydrogel for wound repair as well as a preparation method and application of the composite hydrogel, and belongs to the technical field of medical materials. The preparation method comprises the following steps: mixing methylacryloylated gelatin, hydroxyethyl methylacrylate and oxidized dextran, adding copper sulfide nanoparticles, a cross-linking agent and a photoinitiator, uniformly stirring, placing in a mold, irradiating by adopting ultraviolet light, carrying out Schiff base reaction on an aldehyde group on an ODex chain and an amino group on a GelMA chain to form a dynamic covalent bond, and forming a reversible cross-linking point, so as to obtain the copper sulfide nanoparticle / GelMA composite hydrogel. The preparation method comprises the following steps: carrying out a copolymerization reaction on HEMA and methacryloyl on a GelMA molecular chain to form a stable covalent cross-linked network, effectively capturing CuS NPs through a physical effect and stably dispersing the CuS NPs in the network in the process, and soaking the cross-linked hydrogel in deionized water for balancing to obtain the target composite hydrogel. The composite hydrogel has excellent mechanical strength, pH response swelling property and biocompatibility, can realize efficient antibacterial and endogenous immune regulation by combining near-infrared photothermal therapy, and effectively promotes wound repair.

The invention relates to a metallurgical treatment method of high-grade cobalt-containing copper sulfide concentrate, which comprises the following steps: carrying out first-stage presoaking on the cobalt-containing copper sulfide concentrate to obtain first-stage presoaking liquid and first-stage presoaking slag; grinding the first-stage presoaking residues until the particles of the first-stage presoaking residues are smaller than 200 meshes and account for 95 wt% or above, introducing oxygen, and performing second-stage presoaking to obtain second-stage presoaking liquid and second-stage presoaking residues; the copper grade of the cobalt-containing copper sulfide concentrate is 60 wt% or above. In the presoaking process, a large amount of copper oxide minerals and iron compounds are leached into a solution, so that the iron content in the presoaking residues is reduced, and generation of refractory substances such as copper ferrite is reduced; and compared with the raw ore amount, the ore amount is reduced by 40% or above, the follow-up recovery difficulty is remarkably reduced, and the leaching rate of the cobalt-containing copper sulfide concentrate is effectively increased.

The invention discloses a production process of a cellulose acetate fiber fabric containing natural fragrance, a solvent formed by mixing a modified polymer, 2, 4, 6-trimethylbenzoyl-diphenyl phosphine oxide, a modified microcapsule and dimethylformamide is subjected to dry spinning to prepare the cellulose acetate fiber fabric, and the weight part ratio of the modified polymer to the modified microcapsule is (70-80): (6-8). The preparation method comprises the following steps: by taking an isocyanate group on excessive hexamethylene diisocyanate as a reaction site, firstly reacting with an intermediate containing dihydroxyl, and then reacting with cellulose acetate containing free hydroxyl, so as to prepare the modified polymer. The halamine structure on the molecular chain can destroy cell membranes, enzyme systems or genetic materials through oxidation. The modified capsule has a lavender essential oil and cinnamon essential oil double-component double-capsule-wall structure, the fragrance durability can be improved, the copper sulfide nanoparticles and quaternized chitosan structures can destroy the bacterial cell structure, and the antibacterial performance of the material is improved.

The invention relates to the technical field of thermoelectric materials, and discloses a method for optimizing thermoelectric performance and stability of a copper sulphide material by a macroscopic insulation structure, which comprises the following steps: firstly, preparing Cu1.96S precursor powder by using a mechanical alloying method, then putting the Cu1.96S precursor powder into a graphite grinding tool, and carrying out heat treatment on the Cu1.96S precursor powder to obtain a Cu1.96S / Cu1.96S composite material; meanwhile, macroscopic insulation structure frames are added layer by layer according to different arrangement modes (including up-and-down hole arrangement and left-and-right hole arrangement); and the obtained Cu1. 96S + macroscopic insulation structure frame mixed powder is subjected to spark plasma sintering, and then the block composite material is obtained. The directional migration process of Cu ions in Cu1.96S in the sintering process can be influenced by the added macroscopic insulation structure frame, migration of part of the Cu ions is hindered, the problem that the migration rate and the electrical property of the material are deteriorated due to invalidation caused by the copper ions is solved, the heat conductivity is slightly reduced, and finally the thermoelectric property and the stability are synchronously improved. The problem that an existing cuprous sulfide thermoelectric material is difficult to obtain excellent thermoelectric performance and stability at the same time is solved.

The application discloses a composite foaming agent for copper sulfide ore flotation and a preparation method thereof. The composite foaming agent is composed of the following components in mass fractions: high-carbon-chain polyhydric alcohol 20-35 parts, polyoxyethylene ether 15-25 parts, ester 105 10-20 parts, and isopropyl alcohol or sec-butyl alcohol 15-35 parts. The preparation method comprises the following steps: adding the high-carbon-chain polyhydric alcohol and the polyoxyethylene ether into a reaction kettle, stirring and mixing at 60-70 DEG C; slowly adding the ester 105, continuously stirring for 30-60 minutes, and keeping the reaction temperature at 70 DEG C; after cooling to room temperature, adding the isopropyl alcohol or sec-butyl alcohol, uniformly stirring, and filtering to obtain the composite foaming agent. The composite foaming agent has strong dispersibility, low viscosity, controllable foam performance, can act on gangue minerals such as talc and phlogopite, form a flexible adsorption layer, and improve the hydration of the gangue surface. The foaming agent realizes high-selectivity flotation effect, significantly improves the grade and recovery rate of copper concentrate, and has a significant effect on difficult-to-select fine-grained copper ore.

The invention discloses a method for comprehensively utilizing open-air copper-gold mine resources, which comprises the following steps of: crushing copper sulfide ore, grinding the crushed copper sulfide ore to a certain fineness, and respectively obtaining copper sulfide concentrate and pyrite concentrate by adopting a flotation process of copper-sulfur bulk flotation and reseparation; the method comprises the following steps: firstly, carrying out bacterial oxidation and leaching on the pyrite, and carrying out solid-liquid separation to respectively obtain the pyrite and a gold-containing leachate; and preparing sulfuric acid from the pyrite by adopting an oxidation method, and leaching the copper oxide ore in the waste rock heap by using the sulfuric acid so as to recover copper. The flotation, bacterial oxidation leaching and sulfuric acid leaching processes are adopted, waste is turned into wealth, and the recovery rate of copper and gold is comprehensively increased. The technology is green and environmentally friendly, the process is stable, and comprehensive utilization of copper and gold mine resources is achieved. According to the method, copper sulfide and pyrite are recycled from the flotation process of copper sulfide ore, gold is recycled from pyrite, sulfuric acid is prepared, copper oxide in a waste rock pile is leached through the prepared sulfuric acid so as to recycle copper, and the metal recovery rate of copper and gold is increased through resource cyclic utilization.

The application discloses a kind of sulphur oxygen mixed type copper ore grading magnetic-flotation combined beneficiation method, including grinding screening, magnetic separation, grading, copper sulphide flotation, copper oxide roughing, copper oxide strengthening scavenging.The application is by using strong magnetic separation recovery part coarse grain copper oxide in mill grading system, reduce the overgrinding of copper oxide mineral in the process of grinding, realize the ability to collect early collection, improve copper oxide comprehensive recovery rate, while reducing the release of copper ions in the process of grinding, reduce the adverse effect on subsequent copper sulphide flotation.By using sodium sulphide and sodium pyrosulphite to form efficient copper oxide sulphidizing agent, the stability of the film in the sulphidation process is strengthened, and the inhibition of pyrite is also strengthened, improving the separation efficiency of copper oxide flotation.In addition, by using efficient reagents and precise control, the copper oxide concentrate is directly obtained by opening the circuit of copper oxide roughing and strengthening scavenging concentrate, reducing the copper metal loss caused by closed loop circulation.

The application relates to the technical field of metallurgical process control, in particular to a method for predicting the viscosity of smelting slag of oxidized-copper sulfide concentrate and application thereof. Based on the mass of specific raw material components in the slag of the to-be-detected oxidized-copper sulfide concentrate after oxygen-enriched top-blown smelting, the reference viscosity value of the slag is calculated by combining the pre-set smelting temperature, the pre-factor and the viscous activation energy; then the volume fraction of Fe3O4 obtained after oxidation is calculated according to the mass of the specific raw material components of iron; the predicted viscosity value of the slag is calculated by substituting the volume fraction of Fe3O4 and the reference viscosity value into an expression, which provides a basis for subsequent regulation and control of the smelting process based on the predicted viscosity value; and the problem of how to predict the viscosity of the slag of the oxidized-copper sulfide concentrate to optimize the smelting process is solved.

The application discloses a copper sulfide ore inhibitor and an application method thereof, and belongs to the technical field of mineral processing. The copper sulfide ore inhibitor is prepared by the following steps: taking gum tragacanth and hydrogen peroxide by mass percentage, stirring and dissolving, and treating by ultrasonic waves at room temperature for a certain time to obtain the copper sulfide ore inhibitor. The inhibitor is high in selectivity, low in dosage, environment-friendly, non-toxic, easy to degrade, and wide in source, and has good copper-inhibiting and molybdenum-floating effects.

The invention discloses preparation and application of a multi-site copper-based nanocrystal loaded noble metal monatomic catalyst, which comprises the following steps: dispersing copper-based precursors such as copper, copper oxide, cuprous oxide, copper sulfide and the like in cyclohexane to obtain a precursor dispersion liquid, stirring and heating to 150-300 DEG C, injecting a noble metal salt solution, reacting for 20-60 minutes, cleaning, and drying to obtain the multi-site copper-based nanocrystal loaded noble metal monatomic catalyst. The multi-site copper-based nanocrystal loaded noble metal monatomic catalyst dispersed in cyclohexane is obtained, noble metal is loaded on copper-based nanocrystals in a monatomic form, and the catalyst has relatively high electro-catalytic activity and ethylene selectivity and can be used for preparing hydrocarbon products through electrochemical reduction of carbon dioxide.

The invention discloses an alkyl glucosamide and copper sulphide compounded pulsed photo-thermal sterilization nano material as well as a preparation method and application thereof. The preparation method of the pulsed photo-thermal sterilization nano material comprises the following steps: dissolving a copper source and a sulfur source in a solution containing oleylamine, and preparing copper sulfide nano particles by adopting a solution thermal injection method; the preparation method comprises the following steps: uniformly mixing alkyl glucosamide, copper sulfide nanoparticles and a cosurfactant in a solvent, and preparing the pulsed photo-thermal sterilization nano material by adopting a self-assembly method, the alkyl glucosamide is C8 to 20 alkyl glucosamide; the cosurfactant is selected from at least one of polyethylene glycol, normal propyl alcohol and isopropyl alcohol; the mass ratio of the alkyl glucosamide to the copper sulfide nanoparticles to the cosurfactant is 1: (0.1-15): (0.1-20). The pulsed photo-thermal sterilization nano material has excellent storage stability, can target MRSA sterilization, has an excellent sterilization rate, and is simple in preparation process.

The invention discloses core-shell structure nickel-copper sulfide, a preparation method thereof and a supercapacitor based on the core-shell structure nickel-copper sulfide, and belongs to the technical field of supercapacitor electrode materials. The method comprises the following steps: uniformly mixing a solution containing nickel ions and copper ions with a ligand to obtain a turbid liquid; carrying out plasma activation treatment on the turbid liquid, carrying out gradient heating and heat preservation, centrifugally collecting precipitates, washing and drying to obtain spherical Ni-Cu bimetal MOF powder; the preparation method comprises the following steps: dissolving spherical Ni-Cu bimetal MOF powder, and dispersing to obtain a precursor suspension; and under an inert atmosphere, injecting a dissolving solution containing thioacetamide and thiourea into the precursor suspension, uniformly mixing, vulcanizing, centrifuging, washing, drying and calcining to obtain the nickel-copper sulfide with the core-shell structure. Experiments prove that the nickel-copper sulfide with the core-shell structure can solve the problems that an existing MOF derivative sulfide electrode material is limited in specific surface area and insufficient in capacitive performance, and a preparation process is prone to causing structural damage.

The application provides a kind of copper sulfide@nickel disulfide positive electrode material based on two-dimensional nanosheet wrapping three-dimensional cube and its preparation method and lithium-magnesium dual-ion battery, first using copper salt, alkaline solution and D (+) -glucose in the water bath condition of 70 DEG C, directional formation Cu2O cube.And then, Cu2O and nickel source, sulfur source and surfactant are synthesized by solvothermal synthesis, forming the structure of two-dimensional and three-dimensional combination of NiS2 nanosheet wrapping Cu2S cube.The two-dimensional and three-dimensional combination structure can shorten the particle transmission path, achieve the effect of fast charging and discharging, at the same time, provide more active sites, increase the specific surface area, fully contact with electrolyte, improve the cycle stability of battery.

The invention provides a metallurgical furnace for multi-stage smelting and dilution of copper-nickel sulfide ore, and belongs to the technical field of non-ferrous metal pyrometallurgy equipment. The device is provided with a first-stage space smelting area, a second-stage molten pool smelting area, a third-stage molten pool reduction smelting area and a fourth-stage depletion smelting area which are communicated in sequence; a feeding nozzle and a spray gun are arranged at the top of the first-stage space smelting area to realize material pre-oxidation and impurity volatilization, and a side-blowing spray gun is arranged in the second-stage molten pool smelting area to finish deep smelting and slag-matte separation; a third-stage molten pool reduction smelting area is provided with a spray gun to create a reducing atmosphere, and impurities such as lead and zinc are selectively reduced and volatilized to be removed; a controllable polarity electrode and a sulfuration reducing agent feeding hole are arranged at the top of the fourth-stage depletion smelting area, so that electromagnetic stirring, chemical reduction sulfuration and the like are realized. Through multi-zone collaborative design and functional coupling, the problems that in the existing copper-nickel sulfide ore pyrogenic process, the smelting strength is improved, the adaptability to raw materials is poor, the slag dilution efficiency is low, and impurity valuable metal elements are difficult to enrich are solved.

The present application relates to a kind of preparation method of floating catalyst carbonized corncob load flower-shaped copper sulfide, through simple chemical precipitation method, in situ synthesis copper sulfide flower-shaped microspheres, and using the adhesion ability and chelating metal ion ability of polydopamine, copper sulfide is deposited on carbonized corncob, and constructs the photocatalytic efficiency high, reusable floating catalyst carbonized corncob load flower-shaped copper sulfide.The present application selects carbonized corncob as floating carrier, can achieve the effect of resource recycling, waste utilization, practices the concept of environment-friendly, sustainable development.And the synthesis method is simple and mild, solve the technical difficulty of traditional hydrothermal method high temperature and high pressure, low cost, high efficiency and economy.The prepared floating catalyst carbonized corncob load flower-shaped copper sulfide can efficiently remove Microcystis aeruginosa under visible light (λ≥420 nm) irradiation for 180 min, and has good stability, and has good application prospect in the treatment of cyanobacterial bloom.

The invention discloses a preparation method of a high-conductivity multivalent nanowire and application of the high-conductivity multivalent nanowire to a non-enzyme glucose sensor. The copper nanowire with a high length-diameter ratio is prepared, a certain amount of thiourea is directly added into an ethanol solution of the copper nanowire, and conversion from the copper nanowire to the high-conductivity multivalent nanowire can be achieved under the condition of a specific reaction temperature. In the conversion process, the surface of the nanowire is synchronously induced to form a coarse structure, non-single valence copper sulfide active sites are constructed, and the formed synergistic effect can remarkably increase the number of the active sites, reduce an electrocatalytic oxidation reaction energy barrier and strengthen the specific adsorption capacity of glucose molecules, so that the non-enzyme glucose sensor is manufactured. The sensor shows ultrahigh detection sensitivity, ultralow response speed and excellent anti-interference performance, the preparation process is extremely simple, the cost is low, and the sensor has remarkable technical advantages and wide application prospects in the field of quantitative detection of glucose.

This invention belongs to the field of electrode material preparation technology, specifically relating to a battery-type supercapacitor electrode material and its preparation method. The electrode material is copper sulfide grown on cobalt tetrasulfide nickel, including the following steps: placing copper chloride dihydrate and thiourea with cobalt tetrasulfide nickel in a solvent, carrying out a solvothermal reaction at 140-180°C, and performing post-treatment to obtain a flower-shaped copper sulfide / cobalt tetrasulfide nickel composite material, which can be used as a battery-type electrode material in hybrid supercapacitors.

This invention discloses a method for preparing cobalt-manganese sulfide nanosheets@cobalt-copper sulfide nanowire arrays / nickel foam as a supercapacitor electrode material. The purpose of this invention is to design a core-shell structure composed of different components to improve the specific capacity and cycle performance of the electrode material. This invention mainly includes: 1. Hydrothermal preparation of cobalt-copper precursor / nickel foam (CoCu-pre / NF); 2. Hydrothermal sulfidation preparation of cobalt-copper sulfide nanosheet arrays / nickel foam (CuCo2S4 / NF); 3. Hydrothermal preparation of cobalt-manganese sulfide nanosheets@cobalt-copper sulfide nanowire arrays / nickel foam (MnCoS@CuCo2S4 / NF). This invention features a simple synthesis process, low cost, high yield, and no need for subsequent processing. The MnCoS@CuCo2S4 heterostructure exhibits stronger OH... ‑ The MnCoS@CuCo2S4 / NF electrode exhibits high capture capacity and excellent conductivity, thereby enhancing the efficiency of rapid redox processes. At 1 A g... ‑1 At that time, it obtained 1141.2 C g. ‑1 The specific capacitance at 10 A g ‑1 It exhibits excellent cycling performance of 90.7% over 10,000 cycles. (740.47 W kg) ‑1 At a power density of 64.38 Wh / kg, the hybrid supercapacitor (HSC) can provide 64.38 Wh / kg. ‑1 The electrode exhibits high energy density and can successfully light up LED bulbs. It has enormous application potential as a high-performance electrode material for supercapacitors.