177 results about "Copper monosulfide" patented technology

The invention belongs to a manufacture method of an antibacterial conductive acrylic fiber, which is characterized by being composed of the following steps: (1) arranging the acrylic fiber into a reaction vessel, then pouring a solvent into the reaction vessel, dissolving copper salt containing Cu<2+> into the solvent, adjusting the pH valve of the solution to be between 1.5 to 3.0, then adding a reducer and heating, maintaining the temperature of the solution to be between 90 to 100 DEG C, carrying out reduction on the Cu<2+> by utilizing the reducer to generate Cu<+> and lead the Cu<+> to be absorbed on the acrylic fiber; (2) adjusting the pH value of the solution to be between 1.5 to 3.0 and then maintaining the temperature of the solution to be between 40 to 120 DEG C, adding salt containing sulfur atoms and leading a great amount of Cu<+> to be oxidized to generate the Cu<2+> after the reaction time lasts 2 to 4 hours; thereby generating a sulfide of copper that is not easy to be dissolved in the solvent to lead the sulfide of copper to be sufficiently and uniformly dispersed on the surface of the whole fiber. The copper sulphide in the acrylic fiber manufactured by utilizing the method is dispersed on the surface of the whole fiber. The self physical and chemical characteristics of the copper sulphide lead the fiber to have excellent antibacterial property and conductibility; the copper sulphide on the fiber surface is not easy to fall off and has excellent anti-washing property.

The invention discloses the application processes and the preparation methods of a sulphide ore flotation collector as well as a diacyl bis-thiourea. The invention relates to a novel collector used for high efficiently recycling valuable sulfide minerals from metal sulphide ores; the compositions of the sulphide ore flotation collector include diacyl bis-thiourea surface active agents; the diacyl bis-thiourea compound is shown in the constitutional formula (1) or (2). The collector has strong collecting ability to copper sulphide minerals such as chalcopyrite, etc., lead sulfide minerals or zinc sulfide minerals activated by copper ions, nickel sulfide minerals as well as noble metal minerals such as gold, silver, etc., and has good selectivity to gangue sulphide minerals such as iron pyrites, pyrrhotite, etc., thereby realizing the high efficient flotation separation of the copper sulphide minerals and ferric sulfide minerals when the pH value of ore magma is below 11, reducing the used amount of lime, and improving the comprehensive recovery of copper sulphide ores.

The invention provides a method for extracting cobalt in a copper cobalt sulfide ore, and relates to a method for extracting the cobalt in a copper cobalt ore which is in low grade and hard to treat and contains cobalt mineral raw materials. The method is characterized by comprising the following steps: (1) crushing and grinding low sulfur containing copper cobalt ore; (2) adding water into the grinded ore material for autoclave leaching; (3) neutralizing and filtering the leached ore pulp, and sending leaching residue into tailing; (4) carrying out copper extraction, extract stripping and strip liquor electrodeposition on the filtered solution to prepare cathode copper; (5) neutralizing copper extracting raffinate to remove iron and aluminum, filter-pressing and separating the neutralized ore pulp, and performing the neutralizing step after the filter-pressed and separated residue is returned to the step (3) for leaching; (6) precipitating cobalt and nickel in filter-pressed and separated solution by adopting sodium hydroxide, wherein the separated precipitate is cobalt nickel hydroxide concentrate; and (7) returning separated after-precipitating solution to the step (2) for the leaching process. The method has simple technical process and less equipment corrosion, and realizes comprehensive reclamation and utilization of valuable metals in the low sulfur containing copper cobalt concentrate.

The invention belongs to a method for beneficiating copper/cobalt/nickel mine and specifically relates to a method for beneficiating ion-state copper/cobalt/nickel mine of ore; copper ore containing a plenty of ion-state copper/cobalt/nickel in raw ore is beneficiated except copper/cobalt/nickel sulphide; copper/cobalt/nickel sulphide mine can be recycled in a conventional beneficiating and floating method; and the ion-state copper/cobalt/nickel cannot be recycled and is lost in gangue along with the emission of floated gangue. According to the invention, regulating agent and precipitator are added to gangue pulp in a stirring manner after floating the copper/cobalt/nickel sulphide mine; the ion-state copper/cobalt-nickel in mine pulp is reacted with the precipitator so as to generate copper/cobalt/nickel of a compound; the copper/cobalt/nickel is recycled so as to acquire a copper/cobalt/nickel concentrate product in a floating method; compared with conventional flotation, cobalt concentrate recycling rate is increased by 34.01%; and nickel concentrate recycling rate is increased by 31.58%.

The inventiondiscloses an application of a photothermal-conversion cupric sulfidecomposite film in water treatment. The photothermal-conversion cupric sulfidecomposite film is applied to sea water desalination or sewage treatment and is characterized in that defective type cupric sulfide nanoparticles capable of performing solar photothermal conversion grow on the surface of a black spongy porouspolyethylene film. The composite film is used for manufacturing a device by combining an independent hydrophilic film and a photothermal-conversion material, has a porous surface, is highly hydrophilic and can float on the surface of water, and therefore, under cooperation with the solar photothermal conversion performance of the cupric sulfide nanoparticles on the surface of the film, the composite film can be applied to the evaporation process of water in the nature, greatly improves solar evaporation efficiency of water, can be widely applied to the sewage treatment, the sea water desalination, water circulation and the like and facilitates realization of effective energy utilization and environmental protection.

The invention relates to a low-temperature preparation method of a copper sulfide (CuS)/titanium oxide (TiO2) hetero-junction photocatalyst. The method comprises the steps of (1) preparing titanium hydroxide (Ti(OH)4) by using an inorganic salt or an organic salt of titanium as a precursor and adopting a precipitation method or a sol-gel method; (2) roasting Ti(OH)4 at the temperature of 400-650 DEG C for 2-4h to obtain a TiO2 carrier; (3) dispersing copper powder and sulfur powder into a specific solvent, soaking the TiO2 carrier into the solvent, performing magnetic stirring, and heating for 4-24h in a water bath of 40-60 DEG C, wherein CuS generated by the copper powder and the sulfur powder can be loaded to the TiO2 carrier in the process; and (4) cooling the CuS/TiO2 sample to room temperature, and filtering, washing and drying the sample to obtain the CuS/TiO2 hetero-junction photocatalyst.

A heap leaching method to recover copper from a primary copper sulphide mineral wherein the mineral is leached in an acidic chloride/sulphate solution in the presence of oxygen with the surface potential of the mineral below 600 mV (vs. SHE) to cause dissolution of the copper sulphide.

A sorbent, suitable for removing heavy metals, particularly mercury, from fluid streams containing a reductant such as hydrogen and/or carbon monoxide, is in the form of a shaped unit containing ≦0.1% by weight in total of heavy metal selected from mercury, arsenic, lead, cadmium and antimony, and 4-75% by weight of copper in the form of one or more reduced copper sulphides which have a sulphur to copper atomic ratio of ≦0.6:1.

The invention discloses a quercetin drug-loading system based on a copper sulphide-metal organic frame material. A metal organic frame zeolite imidazolate framework material (ZIF-8) is generated on the surfaces of copper sulphide nano-particles (CuS NPs) as a photothermal preparation to obtain a CuS@ZIF-8 carrier, quercetin is adsorbed into a carrier, and then is modified by a stabilizer and a targeting agent FA-BSA, and thus, a nano delivery system (FA-BSA/CuS@ ZIF-8) with a targeting active effect and pH response can be formed. The water solubility and the chemical stability of the quercetinare improved, good curative effect of treating tumors by combination of phototherapy and chemotherapy can further be played, meanwhile, drug can be rapidly released under the condition of low pH in atumor microenvironment, the tumor cell intake of a pharmaceutic preparation is further enhanced, and the quercetin drug-loading system based on the copper sulphide-metal organic frame material has low toxicity to normal cells, and is good in biological compatibility.

The invention provides a method for removing antibiotic contamination by adsorption of copper sulphide, and belongs to the field of water pollution control. The method comprises the steps of filtering waste water containing antibiotic contamination, adjusting pH to 5-9; and filtering the waste water processed in the step (1) through a bed layer containing the copper sulphide, wherein the antibiotic contamination is any one of tetracyclines, penicillins, macrolides, and sulfonamide fluoroquinolone antibiotic. Compared with the traditional removal technology of the antibiotic in a water body, the method disclosed by the invention has the beneficial effects that 1 the antibiotic contamination in the water body can be selectively complexed and removed; and the effluent concentration can be less than 1mug/L; 2, the adsorbing capacity is large; and the adsorbing capacity of copper sulphide can be up to 500mg/g; and 3, the method is fast in adsorption rate, easy to regenerate, simple and convenient to operate, low in cost and free of secondary pollution.

The invention discloses a preparation method of high grade copper oxide concentrate. The preparation method sequentially comprises complex copper oxide crude ore grinding, copper sulphide flotation and copper oxide flotation. The copper oxide flotation comprises rough flotation and fine flotation, wherein the rough flotation includes that flotation reagents are added into tailings of copper sulphide flotation after the copper sulphide flotation, and rough concentrate and rougher tailings are obtained after mixing, stirring and separating. The fine flotation includes that gangue mineral depressants are added into the rough concentrate to be stirred, and the gangue mineral depressants are halogenate ethyl sodium sulfonate. According to the preparation method, in the fine flotation process, the halogenate ethyl sodium sulfonate is added to serve as the depressants, impurity gangue minerals are water loving, and therefore the separating effect of target minerals and the impurity gangue minerals is improved in the fine flotation process. The method drastically reduces contents of silica, calcium oxide, magnesium oxide and other impurity gangue minerals, and obtains the high grade copper oxide concentrate. The mineral processing process is low in cost, and simple and feasible in operation.

The invention belongs to the technical field of the preparation of the semiconductor material and particularly discloses a method for preparing copper-sulfur compound nano-crystals with controllable morphology based on a chemical vapor deposition method. The method adopts the chemical vapor deposition method, the temperature and pressure of the reaction system and the product collection area are controlled to prepare different morphologies of copper-sulfur compounds such as copper sulfide nano-crystals, copper sulfide nano-rods, copper sulfide nano-sheets and copper sulfide nano-flower-cluster. The method comprises the following specific steps: (1) injecting a solid precursor; (2) controlling the pressure and temperature of the system and injecting a gaseous precursor; and (3) collecting the product. The copper-sulfur compounds prepared by the method are characterized by good monodispersity, high sample purity and the like. The method can also be used to prepare other metal semiconductors such as sulfides, selenides and tellurides; and by changing the reaction conditions of the system, the morphology of the product is regulated and then applied in fields such as the preparation of functional semiconductor elements, photoelectric conversion and catalysis.

The invention discloses an inhibitor and an ore dressing method of high-sulfur refractory copper and sulfur ore. The inhibitor is composed of lime and sodium hexametaphosphate at a mass ratio of 2.0-4.0:0.2-0.6 through mixing. The ore dressing method comprises following steps: raw ore grinding, copper sulfur bulk flotation coarse roughing, copper sulfur bulk flotation scavenging, copper sulfur bulk rough concentrate secondary grinding, copper sulfur bulk rough concentrate refining and refining scavenging, copper sulfur bulk concentrate separating coarse roughing, and copper sulfur separating refining. According to the ore dressing method, bulk rough concentrate secondary grinding is carried out, and then bulk flotation refining is carried out, so that further removing of a part of gangue is realized; a high efficiency inhibitor is adopted for reinforcement of inhibition on iron sulfide ore, and elimination activation of unavoidable ions in ore pulp on ferric sulfide ore, and at last, high efficiency separation of copper sulphide ore, ferric sulfide ore, and gangue is realized. The ore dressing method is simple and convenient; agent consumption amount is reduced; waste water high alkalinity problem is solved; copper sulfur separation effect is excellent; at laste, high grade copper concentrate and sulfur concentrate are obtained; and the ore dressing method is suitable for popularization and applications.

The invention relates to mineral leaching bacteria and a biological high-temperature heap leaching technique of native copper sulfide ore that uses the leaching bacteria. The leaching bacteria are preserved in China Center for Type Culture Collection in Wuhan University, and the preservation numbers are respectively CCTCC NO of M207062, M207063, M207064 and M206029. The heap leaching technique roughly smashes the native copper sulfide ore, finely smashes the native copper sulfide ore, and preprocesses the native copper sulfide ore by spraying a bacteria-containing solution, thus obtaining ore particles that are suitable for biological leaching. The ore particles are processed by working procedures of stacking, heap leaching and spraying, leaching liquid recycling, copper-rich liquid extracting, back extracting and electrodeposition and the like, thus obtaining marketable cathode copper. The heap leaching process adopts a method that includes room temperature bacteria, medium thermophiles and extreme thermophiles and realizes the bacteria-containing spraying operation in phases, thus gradually raising the internal stack temperature. Finally the stock dump temperature is preserved between 10 DEG C and 80 DEG C, pH value is preserved between 1.2 and 1.8, and proper Fe concentration is beneficial to preserve the activity of the mineral leaching bacteria. The biological high-temperature heap leaching technique can completely utilize the low-grade native copper sulfide ore resources in old mines, raises the synthetic mine utilization level, saves cost and increases profits. The biological high-temperature heap leaching technique of native copper sulfide ore that uses the leaching bacteria is applicable to existing domestic low-grade native copper sulfide ore of old mines and the copper ore resource exploit in remote areas of western highlands that mainly aims at exploiting native copper sulfide ore.

The invention relates to a preparation method of an anti-microbial conductive acrylic fiber/copper sulphide complex fiber. The preparation method comprises the steps of pretreating acrylic fiber; immersing the pretreated acrylic fiber into a copper sulfate solution, stirring, keeping in water bath with the temperature ranging from 40 to 80 DEG C for 1 to 2h, then adding a chelating agent solution, immersing and drying for three times, then adding the obtained acrylic fiber into a sodium sulfide solution, reacting at room temperature for 10 to 30min, cleaning, and drying to obtain the anti-microbial conductive acrylic fiber/copper sulphide complex fiber. The anti-microbial conductive acrylic fiber/copper sulphide complex fiber prepared by the invention not only has favorable antibacterial property, electrical conductivity, binding strength, washing fastness and the like, but also is moderate in preparation conditions, simple in process and low in cost.

An absorbent composition suitable for removing mercury, arsenic or antimony from fluid streams includes 5-50% by weight of a particulate sulphided copper compound, 30-90% by weight of a particulate support material, and the remainder one or more binders, wherein the metal sulphide content of the absorbent, other than copper sulphide, is below 5% by weight.

The invention relates to a method for depositing copper sulphide nano film rapidly in low temperature, belonging to the technical field of the preparation of functional film materials. The preparationmethod of copper sulphide film in the prior art has high requirement on the deposition conditions, needs high temperature heating, has great limitations for the deposition of substrate, and has longer preparation time and low efficiency, thus being not benefical to the industrial production. In the preparation method of copper sulphide nano film of the invention, the ethylene diamine tetraaceticacid disodium (EDTA-2Na) is used as complexing agent, nano copper sulphide film with an indigo copper ore structure can be obtained on semiconductor substrate and conducting substrate within 40 minutes and in the microwave water-bath environment at the temperature of lower than 100 DEG C, and the crystal particles of the nano copper sulphide film are tiny, uniform, compact and have specific microstructure. The invention has simple technology and low cost, and is suitable for large-scale production and application.

The invention discloses a copper sulphide/graphene composite material for a negative electrode of a sodium-ion battery and a preparation method. Copper sulphide in the composite material is evenly dispersed into graphene in a 10-80nm flake form; the mass percent of the copper sulphide is 50%-95%; and the graphene is synthesized by a chemical method. The preparation method of the composite material comprises the following steps: mixing CuSO4.5H2O and thioacetamide into a solution and then adding a graphite oxide solution; and obtaining the composite material under a microwave-assisted solvothermal or hydrothermal reaction condition. The composite material has the advantages of high initial coulomb efficiency, high specific capacity, excellent cycle performance and rate capability, long cycle life and the like when used as the negative electrode of the sodium-ion battery; the preparation method is simple; the cost is low; and industrial scale production is easy to implement.

The invention discloses a preparation method for water-soluble copper sulphide quantum dots. The preparation method for the water-soluble copper sulphide quantum dots comprises the following steps that copper salt and a sulfur compound are dissolved into organic solvents separately to serve as a copper source and a sulfur source, and the copper source and the sulfur source are mixed under the ultrasound or stirring condition to react to form a precursor; high purity water or an aqueous solution containing a surfactant or an aqueous solution containing protein is added into the formed precursor, and then the mixture is reacted at the temperature of 4-80 DEG C for 0.5-24 h to obtain the water-soluble copper sulphide quantum dots. The preparation method for the water-soluble copper sulphide quantum dots has the advantages that the preparation method is simple and controllable, the reaction conditions are mild, the materials are low in price and easy to obtain, the environmentally-friendly effect is achieved, and the obtained water-soluble copper sulphide quantum dots achieves good fluorescence property.

Disclosed is a method for selecting copper sulphide ores in a flotation manner. The method is characterized in that sulfydryl carboxylic ester is used as a collecting agent in an ore selecting process. The method has the advantages that selectivity of the copper sulphide ores is high, the utilization quantity of chemicals is low, and flotation selection is realized at a low pH (potential of hydrogen) value. The shortcoming that a method for selecting copper sulphide ores in a flotation manner by the aid of a conventional collecting agent is poor in selectivity, the utilization quantity of chemicals is high, and environments are polluted are overcome. The method is an effective method for selecting the copper sulphide ores in the flotation manner.

The invention discloses a nano titanium dioxide/copper sulphide nano composite material. Titanium dioxide nanowires are prepared by a hydrothermal method and are used as a reaction substrate, a compound structure of copper sulphide nanosheets and titanium dioxide nanowires is prepared successfully by a secondary hydrothermal method under the conditions that the temperature is 100 DEG C and the reaction time is 10 hours, meanwhile, influence of hydrothermal temperature and hydrothermal time to photocatalytic performance of the composite structure is researched. Copper sulphide is prepared into a sheet structure, the compound quantity of the copper sulphide and the titanium dioxide nanowires is increased, the copper sulphide nanosheets and the titanium dioxide nanowires form a heterostructure, the light absorption range of titanium dioxide is expanded, and finally, the photocatalytic efficiency of the composite structure is improved. In the method, equipment is simple, process parameters are controllable, and the repeatability is high. The prepared nano composite material has important application in the field of photocatalysts.

The invention provides a method for preparing arsenic trioxide by arsenic-containing waste water, which comprises the steps of: mixing arsenic sulfide waste residue with water, and extracting arsenic sulfide by sodium hydroxide solution; mixing the obtained arsenic sulfide with the water with 2-5 times of the weight of the arsenic sulfide to be sizing agent, and reacting with copper sulfate solution to obtain arsenous acid and copper sulphide-containing precipitate and sulfuric acid solution; mixing the arsenous acid and copper sulphide-containing precipitate with the water to feed the oxygen, oxygenizing arsenious acid to generate arsenic acid which is easy to dissolve in water, and filtering to obtain arsenic acid solution and copper sulphide precipitate; restoring the obtained arsenic acid to be arsenious acid by sulfur dioxide to obtain arsenious acid; and distilling the arsenious acid, concentrating, filtering and drying to obtain an arsenic trioxide product. The method is short in technological process, high in arsenic recovery rate, free of the generation of secondary pollutant, simple in equipment, and extremely lower in arsenic recovery cost, thereby being a method which is worth to popularize and apply.

The invention discloses a hydrophilic vermiform CuS (copper sulphide) agglomerate and a preparation method and usage thereof. The hydrophilic vermiform CuS agglomerate is prepared by dissolving natural polymers in water or dimethyl sulfoxide, heating to enable the atural polymers to be dissolved; standing for 12-48h at the temperature of 0-8 DEG C after the solution is cooled to the room temperature, then centrifugally removing gel, and repeating for 2-5 times so that polymer solution is obtained; heating the polymer solution to 20-90 DEG C and adding copper source solution for reaction; adding sulfur source solution and segmentally heating for reaction so that black precipitate is obtained; and washing and drying. The prepared hydrophilic vermiform CuS agglomerate is adjustable in size and structure and simple to operate, and the diameter can be controlled by adjusting reaction temperature and time and the like. In dye wastewater treatment, the hydrophilic vermiform CuS agglomerate more easily contacts with water and further is more easily combined with dye to enable the dye to be degraded, thereby photocatalytic efficiency of copper sulphide is improved.

The invention discloses a beneficiation method for copper-cobalt sulfide ore containing two types of cobalt-containing minerals. The method includes the following steps: a copper-cobalt activator anda selective copper-cobalt collector are added into raw ore pulp in order for copper-cobalt rough selection and copper-cobalt scavenging to obtain copper-cobalt crude concentrate and copper-cobalt scavenging tailings pulp; adding a pH regulator and a gangue mineral inhibitor into the copper-cobalt crude concentrate and carrying out copper-cobalt fine selection to obtain copper-cobalt concentrate; combining a bottom flow of the first copper-cobalt fine selection and foam of the first copper-cobalt scavenging and carrying out middling re-collection; adding a cobalt activator, a cobalt collector,a xanthate collector and a foaming agent into combined ore pulp of the copper-cobalt scavenging tailings pulp and a bottom flow of the middling re-collection-fine scavenging for cobalt rough selectionand cobalt scavenging to obtain cobalt crude concentrate; and carrying out fine selection on the cobalt crude concentrate to obtain cobalt concentrate. The beneficiation method for copper-cobalt sulfide ore containing two types of cobalt-containing minerals can effectively solve the problems that copper-cobalt mixed concentrate is low, affecting the quality of the concentrate, improves the product quality of the copper-cobalt mixed concentrate, ensures the effective recovery of copper and cobalt, and improves the value of flotation concentrate.