422 results about "Copper sulfide" patented technology

The invention relates to the technical field of metallurgy, in particular to an efficient-utilization copper-cobalt ore dump leaching treatment method which comprises the steps that after copper-cobalt sulfide ore and copper-cobalt oxide ore are subjected to crushing treatment respectively, heap building is conducted; a solution of acidithiobacillus ferrooxidans is added into a sulfuric acid solution to serve as spraying liquid, heap leaching treatment is conducted on the heap-built copper-cobalt ore through a spraying device, and the spraying flow of the spraying device is controlled in the heap leaching treatment process according to changes of the environment temperature and humidity and changes of the pH value of heap leaching liquid; the obtained dump leaching liquid is subjected to extraction-electrodeposition treatment, and cathode metal copper, sediment and raffinate are obtained; and the raffinate serves as spraying liquid to be subjected to spraying circulation, precipitation is neutralized, and metal cobalt is recycled. The spraying flow of the spraying device is accurately controlled and adjusted, and the leaching effect of copper and cobalt metal in the copper-cobalt ore is improved.

The invention discloses a layered cobalt aluminum oxide / copper sulfide wave-absorbing material and a preparation method thereof, and belongs to the technical field of novel wave-absorbing materials, the wave-absorbing material is prepared through a two-step hydrothermal method, lamellar cobalt aluminum hydroxide is prepared through the hydrothermal method, then the lamellar cobalt aluminum oxide subjected to heat treatment is used as a substrate, and the lamellar cobalt aluminum oxide / copper sulfide wave-absorbing material is prepared through the two-step hydrothermal method. The preparation method comprises the following steps: growing nano flaky copper sulfide on the cobalt-aluminum oxide / copper sulfide composite material by adopting a hydrothermal method to form a layered cobalt-aluminum oxide / copper sulfide heterostructure, and adjusting the wave-absorbing property of the composite material by adjusting the content of the copper sulfide in the composite material. According to the layered cobalt aluminum oxide / copper sulfide wave-absorbing material and the preparation method thereof, the layered cobalt aluminum oxide / copper sulfide wave-absorbing material has the advantages that the density is relatively low, the effective absorption frequency band is relatively wide, the electromagnetic wave absorption performance is relatively high, the preparation method is simple, the morphology of the composite material can be regulated and controlled, and the like.

The invention discloses a method for asynchronously recovering copper and cobalt in sulfur-oxygen mixed copper-cobalt ore tailings through dressing and smelting combination. The sulfur-oxygen mixed copper-cobalt ore tailings are divided into a coarse fraction, a medium fraction and a fine fraction according to particle sizes; the coarse fraction is subjected to ore grinding and copper sulfide flotation, part of copper and cobalt are recycled, and coarse fraction tailings are obtained; the medium fraction is subjected to copper sulfide flotation, copper oxide flotation and magnetic separation, part of copper and cobalt are recycled, and medium fraction tailings are obtained; the fine fraction is subjected to magnetic separation, part of copper and cobalt are recycled, and fine fraction tailings are obtained; and neutralizing one or more than two of the coarse-fraction tailings, the medium-fraction tailings and the fine-fraction tailings to recover part of copper and cobalt. According to the characteristics of the sulfur-oxygen mixed copper-cobalt ore tailings, the sulfur-oxygen mixed copper-cobalt ore tailings are divided into different size fractions, and different grading processes are adopted for treatment. And efficient enrichment and recovery of copper minerals and cobalt minerals with different properties in the sulfur-oxygen mixed copper-cobalt ore tailings are realized through a multi-process combined grading process.

The invention discloses a multi-component nano inhibitor for flotation separation of high-argillaceous copper sulphide ore and application, the nano inhibitor is a nano calcium carbonate-calcium oxide-sodium humate coating body, the nano inhibitor is applied to flotation separation of the high-argillaceous copper sulphide ore, collaborative optimization of slime inhibition and copper ore selective collection is achieved, and the flotation separation efficiency of the high-argillaceous copper sulphide ore is improved. And high-quality copper sulfide concentrate and sulfur concentrate are obtained. According to the method, the high specific surface area and the surface activity of the nano particles are utilized, under the weak alkaline environment without desliming, through the simple, convenient, economical and efficient mineral processing technology and reagent combination, efficient recovery of copper, gold and sulfur in the high-argillaceous ore is achieved, the use amount of lime is greatly reduced, and the technical problem of tailing sedimentation is solved.

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 a method for synthesizing a Mn0. 43Cd0. 57S / Cu2MoS4 photocatalyst by adopting a solvothermal method, and belongs to the technical field of catalysts. The preparation method comprises the following steps: preparing copper molybdenum sulfide by using cuprous oxide as a template, synthesizing copper molybdenum sulfide with high purity and good crystallinity by combining a solvothermal method, preparing manganese cadmium sulfide by using manganese acetate, cadmium acetate, sodium hydroxide and thioacetamide as raw materials, adding copper molybdenum sulfide before a hydrothermal reaction, successfully modifying the manganese cadmium sulfide by constructing a heterojunction, and preparing the copper molybdenum sulfide modified manganese cadmium sulfide. The Mn0. 43Cd0. 57S / Cu2MoS4 photocatalyst is synthesized, and the photocatalytic hydrogen production rate of the cadmium manganese sulfide is improved. Moreover, the hydrogen production rate of the Mn0. 43Cd0. 57S / Cu2MoS4 photocatalyst prepared by the invention can reach 8233 mu mol / (g.h), which is 2.08 times of the hydrogen production rate of pure cadmium manganese sulfide, and 1.24 times of the hydrogen production rate of cadmium manganese sulfide loaded with 1% platinum.

The invention provides a water treatment method and device using an alkali-reinforced copper-based material to excite peroxymonosulfate, and relates to the technical field of wastewater treatment.The method comprises the steps that an alkali agent, the copper-based material and peroxymonosulfate are added into water to be treated; the alkaline agent is sodium hydroxide and / or potassium hydroxide; the copper-based material is copper oxide and / or copper sulfide. The method provided by the invention has the advantages of excellent pollutant treatment effect, mild reaction conditions, simple process flow, environmental protection, energy saving, easy recovery and recycling and the like, and realizes the purposes of small dosage of the oxidant and the catalyst, high utilization rate of the oxidant, small dissolution amount of metal ions and up-to-standard pH of effluent.

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 present invention relates to the field of asphalt modification technology, and more particularly to a modified asphalt composite material, a preparation method and its application in ultra-thin wearing layer, including the following parts by mass of raw materials: 4 6 parts of SBS, 3 5 parts of LDPE, 3 5 parts of epoxy castor oil, 2 4 parts of octamercapto POSS modified wood fiber, 1 3 parts of antifreeze agent, 0.1 0.2 parts of mixed catalyst, 6 10 parts of modified asphalt, 5 8 parts of waste tire rubber powder, 100 parts of basalt wear-resistant aggregate; the antifreeze agent is mixed by (0.7 0.9) with AB modified mesoporous copper sulfide, ILs GO, and bisaldehyde PEG in a mass ratio of (0.2 0.3) : (1); the modified asphalt is mixed and kneaded by 10 parts of petroleum asphalt and 0.6 1.2 parts of tetraallylsilane. The modified asphalt composite material prepared by the present invention has good anti-freeze cracking performance, and has certain intrinsic self-repairing performance.

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 BiVO4 / CuS / NiFeCoOx photoelectrocatalysis material as well as a preparation method and application thereof, and relates to the technical field of photoelectrocatalysis. The preparation method of the photoelectrocatalytic material comprises the following steps: electrically depositing a BiOI film on the surface of a substrate, dropwise adding a vanadyl acetylacetonate solution on the surface of the substrate, and sequentially carrying out high-temperature calcination and alkali liquor soaking to obtain a BiVO4 substrate layer; coating the surface of the substrate layer with a chloroform solution of copper sulfide to obtain a BiVO4 / CuS composite material; and performing first-stage soaking in an iron-nickel-cobalt solution with the pH value of 4.5-5.5, adjusting the pH value of the solution to 6-8, and performing second-stage soaking, thereby finally obtaining the BiVO4 / CuS / NiFeCoOx photoelectric catalytic material. The material has good photoelectrocatalytic activity and stability.

The invention belongs to the technical field of metallurgy, and relates to a method for comprehensively recovering valuable elements from nonferrous smelting waste acid, which comprises the following steps: S1, mixing the waste acid with pyrrhotite, reacting in a sulfur dioxide atmosphere, and after the reaction, carrying out solid-liquid separation to obtain copper slag and copper removal liquid; and S2, H2S gas is introduced into the copper removal liquid obtained in the step S1, and after reaction, arsenic sulfide slag and arsenic removal liquid are obtained through solid-liquid separation. According to the method, FeS in the pyrrhotite selectively reacts with CuSO4 in the waste acid to generate indissolvable copper sulphide precipitates, meanwhile, under the protection of the sulfur dioxide atmosphere, the arsenic element in the waste acid is kept in a dissolved state and does not precipitate, the copper and arsenic elements in the waste acid can be effectively separated through the synergistic effect of the FeS and the CuSO4, and the separation steps are simple and efficient.

The invention belongs to the technical field of biological medicine, and particularly relates to a copper sulfide-gold nano-cluster composite liposome and a preparation method and application thereof, and the copper sulfide-gold nano-cluster composite liposome is composed of copper sulfide nanoparticles, gold nano-clusters and liposome; the preparation method comprises the following steps: loading a gold nano-cluster on the surface of a copper sulfide nano-particle, and then coating the copper sulfide nano-particle with a 1, 2-distearoyl-sn-glycerol-3-phosphorylethanolamine-L-lysine-2, 3-dimethyl maleic anhydride liposome with pH response, so as to obtain the copper sulfide-gold nano-cluster composite liposome. According to the copper sulfide-gold nano-cluster composite liposome prepared based on the method, a biofilm matrix of MRSA can be disintegrated through a photothermal effect, permeation of nanoparticles and ROS is enhanced, and the problem that traditional antibiotics are ineffective to biofilms is solved.

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 discloses a hydrophobic temperature-sensitive meso-porous silicon drug delivery system and a preparation method and application thereof.The drug delivery system takes copper sulfide nanoparticles as a core and amino-modified hydrophobic meso-porous silicon dioxide as a shell, the surface is coated with a temperature-sensitive polymer PEG-p (AAm-co-AN) coat, and the hydrophobic temperature-sensitive meso-porous silicon drug delivery system is prepared. Wherein the hydrophobic mesoporous silica is prepared from a silane coupling agent A151 containing a carbon-carbon double bond and a silicon source TEOS; the drug delivery system has a photo-thermal effect and upper critical solvent temperature responsiveness, can load a large amount of hydrophobic drugs such as beta-elemene, and can realize controllable release under irradiation of 980nm near-infrared light. The phase change temperature of the delivery system is 43 DEG C, so that the combined application of photo-thermal therapy and chemotherapy can be realized while the drug release is controlled, and a more effective tumor inhibition effect is achieved. In addition, the preparation method is simple and has a wide application prospect.

The invention discloses an S-type three-dimensional carbon nitride / copper sulfide nanosphere heterojunction as well as a preparation method and application thereof, and belongs to the field of antibacterial application of nano materials. The three-dimensional porous carbon nitride not only can increase photocatalytic active sites, but also can improve close contact with copper sulfide. The copper sulfide nanospheres and the three-dimensional porous nanosheets construct an S-shaped heterojunction, and efficient separation of photo-induced electrons and hole pairs can be driven under the action of a built-in electric field, band edge bending and coulomb force. The S-type three-dimensional carbon nitride / copper sulfide nanosphere heterojunction can generate more active oxygen species to inactivate bacteria through a photocatalysis-Fenton-like reaction; in addition, the photothermal effect of copper sulphide has a certain auxiliary sterilization effect. Under the conditions of visible light irradiation and trace hydrogen peroxide, the inactivation rates of the S-type three-dimensional carbon nitride / copper sulfide nanosphere heterojunction on staphylococcus aureus and escherichia coli are up to 99.5% and 99.7% respectively, and meanwhile, the S-type three-dimensional carbon nitride / copper sulfide nanosphere heterojunction has a remarkable treatment effect on wounds infected by staphylococcus aureus.

The application discloses a low-alkalinity inhibitor for pyrite in secondary copper-sulfur ore and a method. The method comprises the following steps: adding trisodium trithiocyanate in the process of ore grinding; and adding a second inhibitor to adjust the pH value of the ore slurry to 9.5-10.5 in the process of flotation. The second inhibitor is calcium oxide and an organic copolymer, the organic copolymer is an acrylamide-acrylic acid-maleic anhydride copolymer, and the molecular weight of the organic copolymer is 5000-10000. The method can reduce the activation of copper ions on pyrite, realize low-alkalinity inhibition of pyrite, and avoid problems such as high pH value of mineral processing waste water, easy pipe blockage, and low recovery rate of precious metals.

The invention discloses photo-thermal hydrophobic composite aerogel for crude oil adsorption and a preparation method of the photo-thermal hydrophobic composite aerogel. The composite aerogel is obtained by uniformly mixing a polyvinyl alcohol solution, a copper sulphide-loaded bacterial cellulose dispersion liquid and methyltrimethoxysilane sol, reacting and then sequentially carrying out pre-freezing treatment, freeze drying and heat treatment. The photo-thermal hydrophobic composite aerogel provided by the invention has excellent hydrophobicity and elasticity, large adsorption capacity on oily substances and excellent photo-thermal performance, can be used as an adsorbent for crude oil recovery, can be repeatedly utilized, and has practical popularization and application values.

The invention relates to a copper sulfate-free copper-zinc sulfide ore flotation separation method, and relates to the technical field of mineral flotation separation. The method comprises the following steps: obtaining copper-zinc sulfide ore pulp; by taking ethionine ester as a collecting agent and lime as an inhibitor, carrying out copper-zinc bulk flotation on the copper-zinc sulfide ore pulp to obtain copper-zinc bulk concentrate and discardable tailings; zinc sulfate serves as an inhibitor, the copper-zinc bulk concentrate is subjected to regrinding treatment, and copper-zinc bulk concentrate pulp is obtained; copper flotation is conducted on the copper-zinc bulk concentrate pulp, and copper concentrate and copper tailing pulp are obtained; with ethionine ester as a collecting agent, the copper tailing ore pulp is subjected to sphalerite activation under the condition of aeration stirring, and activated sphalerite ore pulp is obtained; and carrying out flotation on the activated sphalerite by using lime as an inhibitor to obtain zinc concentrate. The scheme provided by the invention has the advantages that heavy metal pollution is avoided, the mineral separation cost is reduced, and the process adaptability is high.

The present invention provides a method for leaching and extracting cobalt and copper from copper-cobalt sulfide concentrate. The method includes: mixing the copper-cobalt sulfide concentrate with iron-aluminum slag for ore blending to obtain a mixed ore; mixing the mixed ore with water for pulp preparation to obtain a first pulp; subjecting the first pulp to pre-acid leaching at an acid-ore ratio of 150 kg / t to 220 kg / t to obtain a second pulp; subjecting the second pulp to oxygen pressure leaching and performing solid-liquid separation to obtain a leaching solution. The iron-aluminum slag is the waste slag precipitated in the process of neutralizing and removing iron and aluminum during the treatment of cobalt and copper in copper-cobalt sulfide ore. By mixing the copper-cobalt sulfide concentrate with iron-aluminum slag for ore blending, the present invention not only effectively improves the leaching rate of valuable metals Co and Cu in the copper-cobalt sulfide concentrate, but also realizes the resource recycling of the iron-aluminum slag generated during the treatment of cobalt and copper in copper-cobalt sulfide ore, reduces environmental pollution, and lowers production costs.

The invention relates to a method for regulating and deacidifying in a bioleaching process of low-grade copper sulphide ore, aiming at the problem of excessive acid caused by excessive oxidation of pyrite in a dump leaching system, a thiocyanate bactericide is added into the bioleaching system of the low-grade copper sulphide ore, and the thiocyanate bactericide is dissolved in a spray liquid of the bioleaching system, and is added into the spray liquid of the bioleaching system; under the catalytic action of mineral leaching microorganisms, oxidation of ferrous ions is enhanced, so that the oxidation-reduction potential of a solution is increased, oxidation of pyrite is intensified, acid accumulation is excessive, the thiocyanate bactericide can remarkably inhibit the activity of part of sulfur-oxidizing bacteria and even kill part of sulfur-oxidizing bacteria, and therefore the activity of ferrous oxide is reduced; compared with the prior art, the method has the advantages that the sulfur oxidation activity of microorganisms is greatly influenced, but the oxidation influence on iron is relatively small, so that the acid leaching is reduced under the condition that the copper leaching of the copper sulfide ore is not influenced, the copper leaching is not influenced, the acid leaching is reduced, the production cost is reduced, the environmental influence is reduced, and the like.

The invention relates to a preparation method of a novel anti-freezing rewarming antibacterial medical gel dressing, belongs to the field of composite material-based hydrogel, and is applied to prevention and treatment of frostbite of field operating personnel in high-cold regions. The preparation method comprises the following step: reacting anhydrous copper chloride, polyvinylpyrrolidone and thiourea to obtain copper sulfide. The preparation method comprises the following steps: dispersing copper sulfide, polymerizing dopamine hydrochloride in an alkaline oxygen-containing environment to gather on the surface of the copper sulfide so as to form polydopamine copper sulfide (PDA-coated CuS), adding N 'N-methylene bisacrylamide and ammonium persulfate, stirring, pouring into a mold, and polymerizing in an environment of 60 DEG C, thereby obtaining PDA-coated CuS / Pro / PAM gel. CuS and PDA are combined, so that the biocompatibility and antibacterial property of CuS are enhanced, the photo-thermal property of dopamine is improved, and proline is used as an antifreeze agent to destroy hydrogen bonds of water molecules and inhibit formation of ice crystals. The medical gel dressing has the beneficial effects that the medical gel dressing with the anti-freezing, rewarming and antibacterial functions can be used in a low-temperature environment of-24 DEG C, and a good rewarming environment is provided for a frostbite part.

The invention discloses a vulcanized porous activated carbon composite material as well as a preparation method and application thereof, and belongs to the technical field of inorganic functional materials. The preparation method comprises the following steps: synthesizing copper sulfide / chitosan quaternary ammonium salt composite particles by adopting a biomineralization strategy, depositing the copper sulfide / chitosan quaternary ammonium salt composite particles on a biomass porous activated carbon material to obtain a sulfurized porous activated carbon composite material, and uniformly loading the copper sulfide / chitosan quaternary ammonium salt composite particles by taking the biomass porous activated carbon material as a carrier to obtain the composite material. The sulfurized porous activated carbon composite material shows excellent photothermal conversion performance, high temperature is generated after light treatment, and the structure of the biomass porous activated carbon material and the structure of the chitosan quaternary ammonium salt are combined, so that the sulfurized porous activated carbon composite material not only shows strong adsorption capacity on organic pollutants in sewage, but also has strong adsorption capacity on the organic pollutants in the sewage. Meanwhile, bacteria attached to the surface of the fabric can be effectively inhibited and killed.

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.

The method comprises the following steps: uniformly mixing copper sulfide concentrate powder with a binder and water, pelletizing, drying, adding into an electric arc furnace, heating to 1500-1600 DEG C, melting to form a molten pool, and introducing hydrogen into the molten pool; in the reaction process, pellets are continuously added into the electric furnace, and hydrogen is introduced into the electric furnace. And after the molten metal in the electric arc furnace reaches a certain amount and the pellets added into the furnace completely react, hydrogen feeding is stopped, oxygen is fed into the molten metal, iron in the molten metal is oxidized into FeO, and the FeO enters slag. And if the iron content in the molten metal is less than 0.5%, stopping blowing oxygen, pouring out slag for extracting iron, casting copper into an electrode plate, and carrying out anode refining to prepare electrolytic copper. And the slag is poured into another electric arc furnace, hydrogen is blown into a molten pool, a chemical reaction is carried out to obtain FeO + H2 = Fe + H2O, the obtained molten iron is used for steelmaking, and smoke heat is used for power generation.

The invention belongs to the technical field of wastewater treatment, and discloses a coupled wet oxidation treatment system for continuously recycling a catalyst, which comprises a homogeneous regulating tank, a catalytic wet oxidation reaction device (comprising a high-pressure pump and a heat exchanger), a neutralization sedimentation tank, a filtering device, an online monitoring and regulating device and a resin purification device. The invention provides a systematic improvement aiming at engineering defects of a traditional copper salt homogeneous catalysis wet oxidation system. Sodium sulfide is used for removing most of copper in wet oxidation effluent, settled copper sulfide-containing slurry is creatively and directly recycled as a wet oxidation catalyst, and a closed-loop circulation system of the catalyst is constructed; and the residual trace copper in the supernate is deeply removed by a resin purification device filled with non-ion exchange chelate resin. According to the invention, high coupling of the catalyst recycling / purifying system and the wet oxygen system is realized, the operation cost and the secondary pollution risk of the homogeneous catalysis wet oxygen system are reduced, and the industrial application feasibility of the homogeneous catalysis wet oxygen system is obviously improved.