1215 results about "Copper sulfate" patented technology

The invention discloses a preparation method of a low-internal-resistance copper foil for a lithium ion battery, which comprises the following specific steps of: 1, grinding a titanium cathode roller by using a grinding wheel of 50-600 meshes, removing an oxide layer, foreign matter points and the like on the surface of the cathode roller, and grinding by using a grinding wheel of 1000-1500 meshes; 2, the cathode roller falls into an electrolytic bath provided with an anode plate, and copper sulfate electrolyte is introduced into the electrolytic bath; and 4, a direct-current power supply is switched on, the current density of the power supply is 60-70 A / dm < 2 >, copper foil is subjected to electrolytic deposition on the arc-shaped cathode roller surface according to the Faraday principle, then the copper foil is subjected to acid pickling, water washing and passivation, and the lithium battery copper foil with the low internal resistance is obtained. On one hand, the problems of coating wrinkling and tab collapse in the battery preparation process are solved, on the other hand, the safety problem caused by excessive internal resistance and heating in the battery using process of an existing copper foil serving as a current collector is solved, and the performance such as the energy density and the rate characteristic of the battery is improved.

The present invention belongs to the technical field of electrolytic copper foil. The present invention provides an electrolyte for ultra-thin electrolytic copper foil, in which the mass concentration of copper sulfate is 175-260 g / L, the mass concentration of inorganic acid is 80-100 g / L, the mass concentration of additive is 1-5 g / L, the mass concentration of complexing agent is 3-8 g / L, the mass concentration of conductive polymer is 0.5-3 g / L, and the mass concentration of hydrolyzed collagen is 0.1-0.5 g / L. The present invention also provides an ultra-thin electrolytic copper foil and a preparation method thereof. The present invention significantly reduces the thickness and roughness of the copper foil by controlling the components of the electrolyte and their concentrations and the electrodeposition process parameters, while improving the mechanical properties, antioxidant properties and electrochemical properties of the copper foil. The ultra-thin copper foil of the present invention can be produced continuously without tearing, achieving a double breakthrough in the ultra-thin thickness and mechanical properties of the copper foil.

The invention belongs to the technical field of stainless steel surface treatment, and particularly relates to a stainless steel passivation solution and a preparation method thereof. The water-based cutting fluid is prepared from the following raw materials: cerium salt, copper sulfate, citric acid, sodium dihydrogen phosphate, ammonium molybdate, sodium tungstate, aminated-silane modified SiO2 nanoparticles, polyethylene glycol, L-ascorbic acid, polyaspartic acid, an anti-settling agent, a surfactant and the balance of deionized water. According to the invention, a three-dimensional network skeleton is constructed by using aminated-epoxy group silane modified SiO2 nanoparticles, so that the problem of weak interface bonding force of a traditional passivation layer is solved; according to the formula, the proportion of biodegradable components such as citric acid and polyaspartic acid is extremely high, cerate adopts a low-toxicity rare earth compound, molybdenum / tungsten elements are fixed in a stable oxide form, the dosage of EDTA is remarkably reduced through a compounding technology, residual ions are adsorbed in combination with a three-dimensional network, and the balance of environment friendliness and long-acting corrosion resistance is achieved.

The invention discloses a carbon fiber-based solar photo-thermal conversion material as well as a preparation method and application thereof, relates to the technical field of solar photo-thermal conversion materials, and solves the problems of poor mechanical performance and photo-thermal conversion performance of an existing photo-thermal conversion material. The preparation method comprises the following steps: thermally mixing a polyvinyl alcohol sodium alginate mixed solution, a graphene oxide solution and a cross-linking agent aqueous solution to prepare a cross-linking precursor solution; the preparation method comprises the following steps: by taking a carbon felt as a substrate, injecting a crosslinking precursor solution into the substrate by utilizing a vacuum infusion process, infiltrating the carbon felt, performing aging crosslinking, and then performing directional freeze drying to obtain a modified carbon felt; preparing an electroplating solution by using copper sulfate, sodium potassium tartrate tetrahydrate, disodium hydrogen phosphate and formaldehyde, adjusting the pH value by using NaOH, growing copper on the surface of the modified carbon felt by using an electroplating process, and carrying out vacuum drying; and putting the modified carbon felt subjected to vacuum drying after electroplating into a tubular furnace to obtain the carbon fiber-based solar photothermal conversion material. The method has a wide application prospect in the field of seawater evaporation desalination.

The invention discloses a preparation method for selectively oxidizing thioether into sulfoxide through photo-initiation, and belongs to the field of synthesis of medical compounds. The preparation method comprises the following steps that in the air atmosphere, a thioether compound is dissolved in an acetonitrile-water mixed solvent, inorganic metal salt catalysts such as ferric chloride and copper sulfate are added, the mixture reacts for 8-48 h at the temperature of 0-45 DEG C under illumination with the wavelength of 295-405 nm, selective oxidation is carried out, and the sulfoxide product is obtained, and the molar ratio of thioether to the catalysts is 5: 1. The method overcomes the problems of excessive oxidation risk, complicated operation, environmental pollution and the like caused by dependence of a noble metal catalyst and use of a strong oxidant in the existing thioether oxidation method, has the advantages of high catalytic efficiency, high yield and excellent selectivity, can greatly reduce the production cost, is suitable for later industrial synthesis and amplification, and has wide application prospects. The method has the advantages of no expensive metal catalyst or oxidant, simple preparation process, high efficiency, environmental protection, safety and cost saving.

The invention discloses a method for recovering metal from high-nickel copper fire refining slag and application of the method, and relates to the technical field of metal metallurgy. Comprising the following steps: carrying out weak acid arsenic leaching on the copper fire refining slag to obtain arsenic-removed leaching slag and arsenic-containing copper liquid; copper removal is carried out on the arsenic-containing copper liquid to obtain a copper-containing material and copper-removed liquid, and arsenic precipitation is carried out on the copper-removed liquid; the arsenic-removed leaching residues are subjected to oxidation copper leaching to obtain copper leaching residues and a copper sulfate solution, and the copper leaching residues are subjected to reduction vulcanization smelting to obtain nickel matte, tin-antimony smoke dust and smelting residues. According to the method, the cost of separation of copper and arsenic in the raw materials can be reduced, the problem of furnace caking caused in the reduction smelting process is avoided, the obtained copper sulfate solution serves as electrolyte replenishing liquid to be applied to the copper electrolysis process, and the influence on the self-purification process of electrolyte is small. According to the method, nickel and copper are enriched in matte nickel through reduction vulcanization smelting, then copper-nickel separation is conducted through the post-treatment process, the post-treatment process is shorter, nickel recovery is achieved while copper recovery is guaranteed, and better economic benefits are achieved.

The invention relates to the technical field of rubber additives, in particular to a cross-linking agent for rubber and a preparation method. The cross-linking agent for rubber is prepared from the following raw materials in parts by mass: 5 to 10 parts of polystyrene microspheres, 1 to 5 parts of tetramethyl orthosilicate, 0.1 to 0.5 part of copper sulfate, 1 to 2 parts of a surfactant, 1 to 2 parts of vinyl trimethoxy silane, 0.01 to 0.1 part of an initiator, 2 to 6 parts of vinyl acetate, 1 to 2 parts of cobalt acetate, 0.01 to 0.1 part of yttrium chloride and 1 to 2 parts of graphene oxide. Transition metal salt and rare earth are compounded and loaded on the surface of grafted silicon dioxide, the specific surface area of the metal salt can be effectively increased, the coordination efficiency is improved, the adding amount of the metal salt is reduced, meanwhile, self-repairing of crosslinking and reinforcing functions can be effectively achieved, and the crosslinking agent is high in stability and has higher environmental tolerance.

The invention discloses a moisture-proof and pressure-resistant packaging carton and a preparation method thereof, and relates to the technical field of packaging cartons, the structure of the moisture-proof and pressure-resistant packaging carton is sequentially provided with an outer lining, a corrugated core paperboard and an inner lining from top to bottom, and the outer lining, a corrugated core and the inner lining are bonded through polyvinyl alcohol; soaking the prototype paper in a carboxymethyl cellulose aqueous solution, taking out the prototype paper, soaking the prototype paper in a copper sulfate metal ion solution and an aluminum chloride metal ion solution respectively, and performing hot pressing to obtain lining prototype paper and outer lining prototype paper; the preparation method comprises the following steps: adding polyethyleneimine and methanol into deionized water, uniformly stirring, soaking the outer lining prototype paper into the deionized water, heating to 35-36 DEG C, preserving heat, taking out the outer lining prototype paper, soaking the outer lining prototype paper into the solution A, adding glutaraldehyde, reacting at 25-30 DEG C, taking out the outer lining prototype paper, carrying out vacuum drying for 30-45 minutes, coating the surface of the outer lining prototype paper with the solution B, and carrying out vacuum drying to obtain the outer lining.

The embodiment of the invention relates to the technical field of chemical engineering, and discloses a method for controlling generation of copper sulfate pentahydrate and a control system.The method comprises the steps that when a double decomposition reaction is conducted on a reaction kettle, the color of a solution in the reaction kettle is monitored in real time through a color matching algorithm; when it is monitored that the color of the solution in the reaction kettle is changed into the specified color, the turbidity value of the solution in the reaction kettle is monitored according to the proportional relation between the turbidity and the electric signal, and the adding speed of the acid solution and the stirring speed of stirring equipment are adjusted; when it is monitored that the turbidity value of the solution in the reaction kettle reaches a first specified threshold value and the temperature of the solution in the reaction kettle is reduced to a second specified threshold value, the cleaning time of the crystallized material is determined according to the weight of the crystallized material in the reaction kettle; and monitoring the moisture content value of the crystallized material by using a near infrared measurement method. By implementing the embodiment of the invention, the production efficiency of the copper sulfate pentahydrate can be improved.

The invention discloses a woven suede fabric and a preparation process thereof, and relates to the technical field of fabrics. According to the preparation method, the base cloth is subjected to dipping treatment by using the dipping liquid, so that the woven suede fabric with excellent flame retardance is prepared. A modified metal organic framework material is added into an impregnation liquid, the metal organic framework material has excellent thermal stability, 2-methylimidazole and zinc nitrate are used as raw materials, hexachlorocyclotriphosphazene with a good flame-retardant effect is packaged into the metal organic framework material, and the flame-retardant performance of the material is improved. The flame-retardant effect of the metal organic framework material is further enhanced, so that the flame-retardant property of the woven suede fabric is improved. The metal organic framework material is treated by using phytic acid, then copper sulfate pentahydrate is added, more metal ions can be chelated through the chelating performance of phytic acid on the metal ions, the catalytic carbonization effect is achieved, and therefore the flame retardant property of the woven suede fabric is improved.

The invention provides a multi-nutrient balanced lick brick for grazing down producing goats as well as a preparation method and application thereof, and belongs to the technical field of animal feed development. The multi-nutrient balanced lick brick is prepared from the following raw materials in parts by weight: 20 to 100 parts of copper sulfate pentahydrate, 35 to 165 parts of zinc sulfate monohydrate, 0.1 to 1 part of sodium selenite, 54.5 to 270 parts of anhydrous ferrous sulfate, 10 to 40 parts of manganese sulfate monohydrate, 15 to 65 parts of 1 percent cobalt chloride, 0.2 to 2 parts of potassium iodide, 40 to 200 parts of DL-alpha-tocopheryl acetate, 0.2 to 2 parts of vitamin A acetate, 40 to 200 parts of calcium carbonate and 20 to 100 parts of adhesive. And 8855-9765 parts of sodium chloride. The proportion of various nutritional ingredients is reasonably adjusted, the requirements of the grazing cashmere goats for microelements and vitamins can be comprehensively met, then the cashmere density is increased, and the cashmere yield is increased. Meanwhile, the fineness of cashmere can be reduced, and the quality of cashmere is improved.

The invention belongs to the technical field of copper foils, and particularly relates to a production process of a copper foil and the copper foils, and the production process of the copper foils comprises the following steps: reacting a copper raw material with sulfuric acid to generate a copper sulfate solution; the copper sulfate solution is electrolyzed, and crude foil is obtained; the raw foil is subjected to surface treatment, the surface treatment comprises a roughening process, in the roughening process, a roughening solution comprises an additive C and an additive D, the additive C comprises one or a mixed solution of two or more of sodium tungstate, sodium molybdate, ammonium molybdate, tin sulfate and titanium sulfate, and the concentration of the additive C is 10-60 ppm; the additive D comprises high-molecular organic matters such as hydroxyethyl cellulose and ethylene glycol, and the concentration of the additive D is 30-50 ppm; and carrying out target temperature treatment on the crude foil subjected to the surface treatment to obtain the copper foil. Through the copper foil production process in the scheme, the peeling strength attenuation rate of the copper foil after high-temperature treatment can be reduced.

The invention provides a preparation method of a porous copper foil with a regular polygonal hole array, which comprises the following steps of: grinding and polishing a titanium plate until the titanium plate is matte, punching holes with the regular polygonal hole array in the titanium plate by laser, finely trimming vertex angles of the regular polygonal holes by laser, and polishing and grinding the titanium plate to obtain the porous copper foil with the regular polygonal hole array. The method comprises the following steps: preparing a titanium plate, cleaning with pure water and alcohol to obtain a clean titanium plate, preparing a copper sulfate electrolyte, adding a proper amount of a brightener, a wetting agent and a high resistance agent into the electrolyte, mixing, pouring the mixed solution into an electrolytic bath, putting the clean titanium plate and a carbon plate into the electrolytic bath, and carrying out electrolytic foil generation by taking the titanium plate as a cathode and the carbon plate as an anode; and after foil generation is finished, the copper foil is stripped from the surface of the titanium plate, and the porous copper foil with the regular polygon holes is obtained. According to the method, the holes of the titanium plate are the regular polygon holes, and the vertex angles of the regular polygon holes are finely trimmed, so that the copper foil of the electrolytic raw foil is not easy to adhere to the titanium plate during stripping, and the production yield of the copper foil is further improved.

The invention discloses a preparation method of a 3-micron ultrathin lithium battery copper foil. The preparation method comprises the following steps: preparing a copper sulfate electrolyte; a wetting agent, a brightening agent and a high resistance agent are added into the copper sulfate electrolyte, the high resistance agent is at least one of thiazolidinethione, polyethyleneimine, 2-mercaptobenzimidazole and ethylene thiourea, and a mixed additive is formed; polishing and grinding a cathode roller by adopting a flying wing wheel, and carrying out electrolytic treatment on the mixed additive through the polished and ground cathode roller to obtain a first-stage copper foil; and the first-stage copper foil is placed in a nitrogen furnace to be subjected to annealing treatment, and the 3-micron ultrathin lithium battery copper foil is obtained. The invention aims to solve the technical problems that in the prior art, edge tearing, foil breaking, warping, dark appearance oxidation and the like are prone to occurring in the production process of the ultrathin copper foil, the tensile strength and the ductility are difficult to consider at the same time, and stable mass production of the 3-micron copper foil is still difficult.

The invention relates to a floating type copper-loaded sodium alginate hydrogel ball as well as a preparation method and application thereof, and belongs to the technical field of water ecological restoration. The technical problem to be solved by the invention is to provide the preparation method of the floating type copper-loaded sodium alginate hydrogel ball. The method comprises the following steps: preparing a solution A and a solution B, wherein the solution A is prepared from sodium alginate, citrate, an acidic pH regulator, hydrogen peroxide and water; the solution B consists of copper sulfate pentahydrate, citrate, a pH regulator and water; dropwise adding the solution A into the solution B to obtain hydrogel balls; and filtering and washing. The hydrogel ball can float on the water surface and release copper ions in a low dosage for a long time, blue-green algae on the water surface are continuously killed, the influence on the water body is small, and the risk of water body pollution caused by excessive copper ion release can be greatly reduced; the algicide feeding device can effectively reduce the feeding frequency of the algicide, also reduces the labor cost caused by long-period feeding of the algicide, can float on the water surface, is easy to recycle, and does not cause secondary pollution to the water body.

The invention relates to the technical field of fertilizers, and discloses a rice sheath blight disease prevention fertilizer, which comprises a fertilizer, medium trace elements, an adhesion functional carrier, a functional additive, and a microbial agent or a bactericide, the fertilizer comprises a nitrogen-phosphorus-potassium compound fertilizer, an original fertilizer, calcium superphosphate and ammonium sulfate, wherein the original fertilizer comprises decomposed livestock and poultry manure, crop straw compost, bean cakes and rape seed cakes; the medium trace elements comprise boric acid, copper sulfate and borax; the microbial agent comprises a bacillus subtilis microbial agent and a trichoderma harzianum microbial agent; the bactericide comprises validamycin wettable powder, a thifluzamide suspending agent and a tebuconazole emulsion in water. Through the components of the fertilizer, the occurrence rate of rice sheath blight disease can be remarkably reduced, the yield and quality of rice can be improved, the microbial agent can increase the number and activity of beneficial microorganisms in soil, the soil structure and fertility are improved, and the yield and quality of rice are improved. A good soil condition is created for rice growth, so that the rice has a better resistance effect.

The invention discloses a synthesis process of vitamin C ethyl ether, and belongs to the technical field of vitamin C derivative synthesis. The process comprises the following steps: taking L-ascorbic acid as a raw material, adding acetone, anhydrous cupric sulfate and acetyl chloride, and reacting for 1-2 hours at 38-40 DEG C under the protection of nitrogen to obtain a vitamin C protector; adding alkali, water, an alkylating reagent and absolute ethyl alcohol into the reaction product, reacting for 3 hours at 75-78 DEG C under the protection of nitrogen, and performing reduced pressure distillation to obtain a vitamin C protector etherate; and finally, hydrolyzing by using cationic resin, removing a protecting group, and recrystallizing by using ethyl acetate to obtain the vitamin C ethyl ether. Through the synergistic catalysis of anhydrous cupric sulfate and acetyl chloride, the reaction time is remarkably shortened, and the product purity and yield are improved. Through detection, the product purity is more than 99.5%, the total yield can reach more than 80%, and an efficient and economical method is provided for industrial production of vitamin C ethyl ether.

The invention relates to the technical field of electrolytic copper foil processing, and particularly provides a method for reducing the rough surface roughness of an HVLP copper foil by using a composite additive, which comprises the following steps: step (1): enabling the composite additive to flow into a high-level tank through an additive flow pump, uniformly mixing the composite additive with a copper sulfate electrolyte, and enabling the mixture to flow into a crude foil machine; step (2), then adjusting process parameters of a crude foil machine, including current and line speed of a cathode roller; (3) foil generation and foil drawing are carried out; the composite additive comprises one or two of gelatin and collagen. One or more composite additives composed of gelatin, collagen, sodium dithiodipropane sulfonate, N, N-dimethyl-dithioformamide sodium propanesulfonate, 3-sulfydryl-1-sodium propane sulfonate, hydroxyethyl cellulose and polyethylene glycol are added into the raw foil electrolyte, so that the copper electrodeposition reaction potential can be effectively changed; and uniform and compact copper crystallization peaks are obtained, the rough surface roughness of the raw foil is reduced, and the uniformity of a plating layer is improved.

The invention discloses a Chinese wildrye hydroponic nutrient solution as well as a preparation method and application thereof, and belongs to the technical field of plant cultivation. Each liter of the nutrient solution comprises the following components: 80 to 120 mg of ammonium nitrate, 45 to 55 mg of sodium dihydrogen phosphate dihydrate, 80 to 90 mg of potassium sulfate, 110 to 115 mg of anhydrous calcium chloride, 400 to 410 mg of magnesium sulfate heptahydrate, 1.5 to 2.0 mg of manganese chloride tetrahydrate, 0.08 to 0.10 mg of ammonium molybdate tetrahydrate, 1.1 to 1.2 mg of boric acid, 0.02 to 0.05 mg of zinc sulfate heptahydrate, 0.02 to 0.05 mg of copper sulfate pentahydrate, 15 to 35 mg of ferrous sulfate heptahydrate and 20 to 50 mg of disodium ethylene diamine tetraacetate. The hydroponic nutrient solution provided by the invention meets the nutritional requirements of leymus chinensis, seedlings grow quickly and vigorously by utilizing the nutrient solution, the biomass and nutrient content of the overground part are remarkably increased, and the high-quality pasture characteristics of the leymus chinensis are ensured.

The invention belongs to the field of secondary resource recycling, and discloses a method for preferentially extracting lithium from a waste lithium iron phosphate battery positive electrode material through salt leaching, the waste lithium iron phosphate battery positive electrode material is leached by adopting a soluble chloride and metal sulfate mixed solution, and a lithium-containing leaching solution and ferrophosphorus slag are obtained, the soluble chloride solution is selected from at least one of a potassium chloride solution, an ammonium chloride solution or a sodium chloride solution, and the metal sulfate comprises at least one of ferric sulfate, copper sulfate and high-valence manganese sulfate. According to the method, the valuable metal is recycled from the waste lithium iron phosphate battery powder by adopting a novel salt leaching process, the use of a large amount of acid and alkali reagents in a conventional wet process is avoided, the whole recycling process is green, environment-friendly and low in cost, and the lithium-extracted liquid is recycled after being blended, so that the input cost of a production reagent is reduced, and the efficient utilization of the reagent is realized; no waste water is generated, and cleaning and environment-friendly effects are achieved.

The invention relates to a method for composting by adopting hermetia illucens fecula. The method comprises the following steps: collecting hermetia illucens fecula and biological wastes; the method comprises the following steps of: mixing the raw materials, so that the carbon-nitrogen ratio in a mixture is (20-30): 1, spraying a microbial complex microbial inoculant, adding glucose, monopotassium phosphate, polysorbate, ferrous sulfate, manganese sulfate and copper sulfate, fully mixing, piling, covering with a heat-insulating film, and sealing to obtain a primary compost; collecting hollow bricks, laying a first hollow brick layer on the plane, enabling pores of the first hollow brick layer to be parallel to the horizontal plane, turning the primary compost to the first hollow bricks to form a first compost layer, flattening, laying a second hollow brick layer, sequentially carrying out the steps for a plurality of times until composting is completed, and covering the periphery of a compost body with a heat-insulating film to form the compost. And keeping for 10-30 days. The method can increase the abundance and strength of microbial metabolic pathways, increase the composting temperature, prolong the high-temperature time of the compost, accelerate the decomposition of the compost, and realize the harmlessness of the black soldier fly feces.

The invention relates to the technical field of biological prevention and treatment, and discloses a composition for preventing and treating rice sheath blight disease, which is prepared from the following raw materials in parts by weight: 80 to 90 parts of validamycin, 30 to 45 parts of traditional Chinese medicine extract paste, 10 to 20 parts of traditional Chinese medicine raw medicine, 15 to 19 parts of white carbon black, 10 to 17 parts of copper sulfate, 12 to 16 parts of chitosan, 9 to 15 parts of gibberellin, 5 to 9 parts of tebuconazole, 1 to 5 parts of compound sodium nitrophenolate, 2 to 4 parts of emulsifier and 1 to 3 parts of synergist. Gleditsia sinensis, sanguisorba officinalis, flos rhododendri mollis and sapindus mukorossi peel in the traditional Chinese medicine raw medicines are used for synergistically killing bacteria, enhancing the immunity of plants and delaying the decomposition of validamycin, and meanwhile, extracts of honeysuckle, dandelion, croton and artemisia annua in the traditional Chinese medicine extract are complementary with validamycin in the aspects of sterilization, virus resistance and plant resistance improvement; therefore, the effect of validamycin is more durable, the duration of single application is longer, and the manpower and material resource cost is saved.

The utility model discloses an electroplating bath improved structure based on ultrathin carrier copper foil production, which is characterized in that two anode plates are arranged in an electroplating bath, a submerged roller is arranged between the two anode plates, a conductive roller and an upper guide roller are respectively arranged at the upstream and the downstream of the electroplating bath, one side of the carrier copper foil close to the anode plates is a treatment surface, and the other side of the carrier copper foil is a non-treatment surface; the improved structure of the electroplating bath comprises an outlet spraying pipe which is arranged on one side, close to an upper guide roller, of the electroplating bath, and the outlet spraying pipe is used for spraying a copper sulfate solution on a treatment surface. The outlet spraying pipe continuously sprays a copper sulfate solution with the temperature consistent with that of the copper sulfate electrolyte on the treatment surface, so that the phenomenon that crystals are separated out on the surface of the carrier copper foil due to the fact that the temperature of the surface of the raw foil is too fast and the copper ion concentration in the copper sulfate electrolyte is relatively high can be effectively prevented; the surface of the ultrathin carrier copper foil does not have the defects of pits, pressure points and the like, the production yield is high, and the practicability is high.

The invention discloses a thiophanate-methyl production wastewater treatment method, and belongs to the technical field of pesticide wastewater treatment.The thiophanate-methyl production wastewater treatment method comprises the following steps that S1, copper sulfate pentahydrate is added into thiophanate-methyl production wastewater, then the mixture is introduced into a catalytic wet oxidation kettle for a reaction, and treatment liquid I is obtained; s2, adding a modified catalyst into the treating fluid I, and performing photocatalysis to obtain treating fluid II; and S3, carrying out three-stage membrane distillation treatment on the treatment liquid II to obtain a treatment liquid III, thereby completing the treatment. According to the method, the COD and ammonia nitrogen concentration in the production wastewater is remarkably reduced, and the COD and ammonia nitrogen removal rate is increased.

The invention relates to the technical field of stainless steel bands, and particularly discloses a wear-resistant duplex stainless steel band and a processing technology thereof. The method specifically comprises the following steps that S1, the surface of a duplex stainless steel band is electroplated with an iron-nickel-copper layer, and a stainless steel band A is obtained; the plating solution comprises the following components: 40-50 g / L of nickel sulfate hexahydrate, 20-30 g / L of ferric sulfate, 30-40 g / L of copper sulfate pentahydrate, 35-45 g / L of sodium citrate dehydrate, 25-30 g / L of sodium acetate and 20-25 g / L of sodium hypophosphite; s2, uniformly mixing organic silicon resin, hydrogen-containing silicone oil, ethanol, nano silicon carbide and a corrosion-resistant antibacterial agent to obtain a corrosion-resistant antibacterial coating; s3, the surface of the stainless steel band A is coated with the corrosion-resistant antibacterial coating, drying is conducted at the room temperature, and a stainless steel band B with a corrosion-resistant antibacterial coating on the surface is obtained; and coating gallium-containing zinc oxide sol on the surface of the stainless steel band B, and carrying out heat treatment to obtain the wear-resistant duplex stainless steel band with a gallium-containing zinc oxide layer on the surface.

The invention discloses an electro-coppering leveling agent and a preparation method thereof, an electroplating solution, an electroplating method and a product, and belongs to the technical field of electro-coppering. The leveling agent is obtained by reacting 1, 3, 5-tri (4-pyridyl) benzene with a compound containing halogen and hydroxyl at the same time, the electroplating liquid comprises copper sulfate, sulfuric acid, chloride ions, an accelerator, an inhibitor and the leveling agent, the current density during electroplating is 1-15 ASD, and the electroplating temperature is 18-45 DEG C. The copper electroplating leveling agent and the corresponding electroplating liquid provided by the invention can be used for electroplating copper columns and electroplating copper RDL, the electroplating liquid does not need to be replaced when copper columns and copper RDL products are produced and switched, and the performance of the electroplating liquid is excellent. The obtained copper cylinder is good in uniformity: WID% is less than 5%; the shape flatness TIR% of the copper column is less than 5%; the copper RDL is flat in outline, free of appearance defects and good in uniformity, and WID% is smaller than 5%.

The invention provides an electrocoppering plating solution for filling X-shaped holes of a printed circuit. The electrocoppering plating solution comprises copper sulfate pentahydrate, sulfuric acid and sodium chloride, and an additive system comprises a first type of additive, a second type of additive and a third type of additive; the first type of additive is one or more of polyethylene glycol, polypropylene glycol, ethylene oxide and propylene oxide segmented copolymer, and the second type of additive is one or more of sodium dithiodipropane sulfonate, 3-mercapto-1-sodium propane sulfonate, phenyl sodium dithiodipropane sulfonate and 2-mercaptobenzimidazole. The third type of additive is one or more of 1-methyl-4-nitroimidazole, azathiopurine, 6-mercaptopurine and 2-thioxanthine, when the compound is applied to X-type hole filling, the high-quality filling effect is achieved, meanwhile, the average thickness increase of surface copper is controlled to be smaller than 13 microns, the recession degree is controlled to be smaller than 4 microns, the thickness of the surface copper is controlled to be smaller than 10 microns, and the surface copper is controlled to be smaller than 10 microns. Wherein the control capability of the surface copper thickness is in a leading position in similar inventions and existing production technologies.

The invention relates to the technical field of photocatalysis, and provides a preparation method of a copper-cuprous oxide-copper bismuthate ternary complex, which comprises the following steps: adding sodium bismuthate dihydrate, copper sulfate and sodium sulfite into a hydrothermal reaction kettle containing distilled water to obtain a solid-liquid mixture; and the solid-liquid mixture generates the copper-cuprous oxide-copper bismuthate ternary compound under a hydrothermal condition through a synergistic effect of a heterogeneous interface in-situ oxidation-reduction reaction of sodium bismuthate and a sodium sulfite solution and a homogeneous oxidation-reduction reaction of a copper sulfate solution and the sodium sulfite solution. The preparation method has the advantages that the elemental copper-cuprous oxide-copper bismuthate ternary compound is prepared by a one-pot method through cooperation of the out-phase interface in-situ oxidation-reduction reaction and the homogeneous oxidation-reduction reaction, and the preparation method is simple in preparation step, convenient to operate and easy to quantitatively control.

The invention discloses a flotation process for pressurizing and stirring sulphide ore, and relates to the technical field of sulphide ore flotation. Crushing and ore grinding; blending ore pulp; carrying out secondary ore grinding to obtain flotation ore pulp; wherein ore pulp is pumped into the grinding cylinder, an extrusion part is installed in the grinding cylinder, and the extrusion part extrudes the ore pulp to crush internal particles; the grinding component enters the bottom later; adding an activating agent, wherein the activating agent comprises copper sulfate and sodium hydrosulfide; copper flotation, zinc flotation and sulfur flotation are conducted in sequence, the areas are separated at intervals through separation nets, and lifting separation is conducted through a lifting mechanism on the top; scavenging and tailing treatment are conducted on the cleaned tailings, wherein after the scavenged tailings are subjected to thickening treatment, overflow water directly returns to the ground ore in the first step to be used; and tailings are subjected to follow-up treatment, so that the technical problems that more types of particles are easily adsorbed during diameter mixing flotation, and the high-quality product rate of each concentrate is low are solved.

The invention discloses a multi-grain-boundary Cu-based catalyst for electrocatalytic reduction of low-concentration CO and a preparation method, and belongs to the field of catalyst preparation, and the preparation method comprises the following steps: (1) dissolving a certain amount of concentrated sulfuric acid, anhydrous cupric sulfate, sodium chloride, gelatin and the like in water at a certain temperature in sequence to prepare an electroplating solution; and (2) placing the electroplating solution in an electrolytic bath, and electrically depositing a certain amount of Cu on the gas diffusion layer under the conditions of certain temperature, voltage and current density by taking the foamy copper as an anode and the gas diffusion layer as a cathode to prepare the catalyst. The gas diffusion layer loaded multi-grain-boundary Cu-based catalyst provided by the invention can be used for efficiently electrocatalytically reducing low-concentration CO (5% CO / N2) under the conditions of normal temperature and normal pressure, reduction products are mainly ethanol, acetic acid and the like, and the total Faraday efficiency of CORR reaches 15.9% when the voltage is-0.83 V (vs.RHE).