9 results about "COPPER SULFATE CRYSTALS" patented technology

The application provides a method for preparing copper sulfate by using a nickel sulfate production device, and comprises the following steps: S1, raw material pretreatment; S2, leaching reaction; S3, solution purification; S4, evaporation and concentration; S5, crystallization; S6, filtration separation; and S7, drying. The application relies on the existing evaporation, precooling, filter pressing and crystallization equipment of the nickel sulfate, realizes the production of qualified copper sulfate without adding new core equipment through raw material adaptive treatment and process parameter adjustment, has the advantages of low cost, high adaptability, environmental protection and high efficiency, the purity of the product is greater than or equal to 20%, the equipment utilization rate is increased by more than 60%, and the method is suitable for joint production operation of non-ferrous metal smelting enterprises. In the crystallization step, the crystallizer is provided with a crystallization degree monitoring device, the cooling rate and the constant-temperature crystallization time can be adjusted in real time according to the supersaturation degree and other parameters of the solution, good conditions are provided for the growth of the copper sulfate crystals, the crystal particle size is uniform, the purity and quality of the product are improved, and the quality requirements of different customers for the copper sulfate product are met.

The application provides a process for recycling electrolytic copper to efficiently smelt and form copper balls, which comprises an electrolyte purification and arsenic removal process and an electrolytic copper smelting and forming copper ball process; the electrolyte purification and arsenic removal process comprises: evaporating and concentrating and cooling and crystallizing the arsenic-containing electrolyte to separate copper sulfate crystals and a crystallization mother liquor; introducing an oxidizing agent into the crystallization mother liquor to oxidize trivalent arsenic into pentavalent arsenic; adding an iron salt and a pH regulator into the oxidized solution to control the pH value to be 3.5-4.5, so that arsenic is precipitated in the form of ferric arsenate; solid-liquid separation is performed to obtain ferric arsenate slag and a post-arsenic-removal solution, and the ferric arsenate slag is discharged for disposal; the electrolytic copper smelting and forming copper ball process comprises: performing pickling, water washing and drying on cathode electrolytic copper obtained through electrolytic refining, and then pressing the cathode electrolytic copper into dense copper blocks; smelting the dense copper blocks under the protection of inert gas, performing degassing and deoxidizing refining after melting, pouring and forming the refined copper liquid, and sequentially performing air natural cooling and water mist cooling to room temperature after demolding.

The invention belongs to the field of circuit board copper reduction etching machine processing, and discloses a copper sulfate recovery device and method for a circuit board copper reduction etching machine, the recovery device comprises a precipitation tank, a cooling assembly, a liquid supply assembly and a scraping assembly, the precipitation tank is used for injecting micro-etching waste liquid; the cooling assembly comprises cooling plates and a refrigerator, and the cooling plates are arranged on the two opposite sides of the precipitation tank; the scraping assembly comprises a plurality of scraping plates, a transmission chain and a driver, and the transmission chain drives the scraping plates to move along the precipitation tank, so that the scraping plates scrape out the copper sulfate crystals from the discharge port; the detection assembly comprises a volumetric flowmeter and a temperature sensor, the volumetric flowmeter is arranged on the infusion tube, and the temperature sensor is arranged in the precipitation tank; the water pump is provided with a first controller; the first controller is in communication connection with the volume flow meter; the refrigerator is provided with a second controller, and the second controller is in communication connection with the temperature sensor and the first controller. According to the invention, the crystallization time can be shortened, the refrigeration energy consumption is reduced, and the maintenance cost is obviously reduced.

The invention relates to a method for preparing large-particle copper sulfate from circuit board copper-containing waste liquid through crystallization, which comprises the following steps: S1, adding an oxidizing agent into the waste liquid, adding alkali to adjust the pH value to 2-3.5, filtering, adding sulfuric acid, heating and boiling to obtain a primary purified solution; s2, performing multi-stage counter-current extraction on the solution obtained in the step S1 by using a copper extraction agent, and then performing reverse extraction by using concentrated sulfuric acid to obtain copper sulfate reverse extraction liquid; s3, taking part of the copper sulfate strip liquor obtained in the S2, and carrying out rapid cooling or spray granulation to obtain copper sulfate fine grains; s4, carrying out sectional controllable evaporative crystallization on the copper sulfate strip liquor obtained in S2 to obtain copper sulfate crystals; and S5, washing and drying the copper sulfate crystal to obtain a final product. The copper sulfate crystal obtained by the method for preparing the large-particle copper sulfate from the copper-containing waste liquid of the circuit board through crystallization is large in particle size, the average particle size can reach 0.5-2.0 mm, the particle size distribution is concentrated, the crystal form is complete, and the purity is high.

The application discloses a pore-forming agent, which comprises a core material and a skin layer coated on the surface of the core material, wherein the core material is a copper sulfate crystal hydrate, and the skin layer is a non-polar substance with a melting point of less than or equal to 120 DEG C. The application further discloses a preparation method of the pore-forming agent and an application of the pore-forming agent in a breathable film. The application further discloses an antibacterial breathable film, which comprises resin and the pore-forming agent. The application further discloses a preparation method of the antibacterial breathable film, which comprises the following steps: mixing and granulating the resin and the pore-forming agent, casting a film, stretching, and shaping to obtain the antibacterial breathable film, wherein microwave heating is performed simultaneously with the stretching. The pore-forming agent is obtained by selecting the copper sulfate crystal hydrate as the core material and coating the core material with the skin layer, and the pore-forming agent, in combination with the microwave heating, can make the antibacterial breathable film have uniform pores and has a sterilization effect; and the preparation method of the pore-forming agent and the breathable film is simple and suitable for industrial production.

The present application relates to a kind of copper in waste paint residue resource recovery method, belong to solid waste resource processing technical field.The method is as follows: waste paint residue is broken and ground;In inorganic salt culture medium, biological leaching bacterial strain is obtained by shaking table culture biological leaching liquor;When biological leaching liquor pH drops to 0.6-1.4, according to 2% to 10% solid-liquid ratio, paint residue powder is input, and shaking table culture is carried out until the dissolution concentration of copper ion no longer increases, and biological leaching ends.Biological leaching liquor is extracted in the extractant formed by LIX984 and sulfonated kerosene DT100, and the oil phase and water phase enriched in copper are separated;The oil phase is back-extracted with sulfuric acid solution, and the water phase and oil phase enriched in copper are separated;Water phase is evaporated and cooled to crystallize and obtain copper sulfate crystal.This method recycles copper ions in waste paint residue, with the characteristics of high recovery rate, simple process, energy saving and environmental protection.

The invention relates to the technical field of copper electrolysis production, in particular to a method for crystallizing and separating out copper ions in copper electrolysis waste liquid, and aims to solve the problems that the copper ion crystallization recovery rate is low and the concentration process is time-consuming and labor-consuming in the purification and copper removal process of the copper electrolysis waste liquid at present. The method for removing the copper element comprises the following steps: placing the waste copper electrolyte in an electrolyte head tank, adding the solution and concentrated sulfuric acid into a copper removal tank according to a certain volume ratio, enabling the concentration of the sulfuric acid in the mixed solution to reach 400-700g / L, enabling copper ions to reach supersaturation in the solution, and separating out copper sulfate crystals when the temperature is reduced to 15-30 DEG C, the high-acid solution returns to an electrolysis system to supplement the consumption of sulfuric acid in the electrolyte, meanwhile, valuable metals are recycled to the maximum extent, corollary equipment such as a copper removal tank and a pipeline required by normal production is adopted in the whole process, the operation is simple and convenient, the maintenance is easy, the solution after copper removal can be continuously used, and the production cost is reduced. And the production cost is effectively reduced.

The utility model discloses a high-concentration copper bath solution recovery system which comprises a bath solution exchange tank used for pre-cooling bath solution in the bath solution exchange tank; the cooling crystallization tank is connected with the tank liquid exchange tank through a pipeline, and the cooling crystallization tank is used for generating copper sulfate crystals; the separation conveyor is connected with the cooling crystallization tank through a pipeline, and the separation conveyor is used for outwards conveying copper sulfate crystals generated in the cooling crystallization tank; and the collecting barrel is connected with the separation conveyor, and the collecting barrel is used for collecting the copper sulfate crystals. By arranging the tank liquid exchange tank, the cooling crystallization tank, the separation conveyor and the copper sulfate collecting barrel, the recovery efficiency of copper sulfate crystals can be effectively improved, meanwhile, the recovery rate of production feed liquid can be effectively improved, and the device is more energy-saving and environment-friendly.

The application is suitable for the technical field of wastewater treatment and resource recovery, and provides a resource treatment method for electroplating waste liquid, which is aimed at the waste liquid containing copper sulfate and sulfuric acid generated in the copper electroplating process, copper sulfate is generated by adding copper oxide, copper hydroxide or copper carbonate and the like into the waste liquid to react with free sulfuric acid in the waste liquid; then, the saturated copper sulfate solution after reaction is controlled in speed and cooled to crystallize, and high-purity copper sulfate crystals are separated; the crystallization mother liquor can be recycled to the reaction step to further improve the recovery rate, and finally, the tail liquid enriched with impurities is subjected to pH adjustment and ion exchange resin adsorption treatment to realize standard discharge. The application can efficiently convert sulfuric acid and copper ions in the waste liquid into electronic-grade copper sulfate products which can be directly reused in the electroplating process, realizes high-value recovery of resources, and reduces disposal cost and environmental pressure.