43results about "Copper sulfates" patented technology

The utility model discloses a cathode protection copper sulfate evaporator, which is characterized in that a plurality of anodes are arranged in the copper sulfate evaporator, the anodes are inserted in a copper sulfate solution in the copper sulfate evaporator, and the anodes, a cathode binding post and a reference electrode are all connected with a constant potential controller; the constant potential controller, the anode, the copper sulfate solution in the copper sulfate evaporator and the copper sulfate evaporator body form a current loop, the controller outputs direct current, and the protection potential of the equipment is changed by automatically controlling the magnitude of the output direct current until the potential of the equipment reaches the protection potential ranging from-0.1 V to-0.6 V; a cathode protection anti-corrosion technology is applied to the copper sulfate evaporator, uniform corrosion and pitting corrosion caused by high-temperature dilute sulphuric acid and high-concentration chloride ions of equipment materials in a copper sulfate solution are prevented, the corrosion speed is reduced, and the service life is prolonged.

The invention discloses a continuous crystallization method and system of copper sulfate pentahydrate and a copper sulfate pentahydrate crystal, and the method comprises the following steps: S1, tangentially adding a supersaturated solution of copper sulfate pentahydrate from the bottom of a cyclone fluidized bed crystallizer to form a rotationally rising flow field in the crystallizer; s2, adding a copper sulfate pentahydrate seed crystal to enable the seed crystal to be in a suspended and fluidized state and grow; s3, mixing the copper sulfate pentahydrate mother liquor with supplemented fresh feed liquid, treating to form a supersaturated solution of the copper sulfate pentahydrate again, and returning to the step S1 for circulation; s4, process parameters of continuous crystallization are controlled, and the ratio of the feeding flow Qm to the mother liquor circulation flow Qc is not larger than 3.56%; s5, maintaining the void ratio epsilon of the bed layer to be 0.7 or above by leading out a crystal product; according to the invention, stable and continuous operation can be realized, crystal breakage and secondary nucleation are reduced, and high-purity copper sulfate pentahydrate crystals with large particle size, uniform particle size distribution and regular morphology are obtained; the production efficiency is high and the energy consumption is low.

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

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.

This invention provides an automatic copper oxide powder addition device and method for FCBGA packaged substrate electroplating. The method includes: a vibration device vibrating the container to prevent copper oxide powder from clumping; and a monitoring device monitoring the measurement results of the weighing structure and the sensing results of the photosensitive sensor to control the transfer of copper oxide powder. This invention, by incorporating a vibration device in the container, prevents the copper oxide powder added during the FCBGA packaged substrate electroplating process from clumping before entering the dissolution tank, avoiding blockage caused by excessively low copper ion concentration or copper oxide powder precipitation on the product surface, thereby improving product yield. Simultaneously, the photosensitive sensor monitors the copper oxide powder level, preventing abnormal measurements by the weighing structure that could lead to excessive addition of copper oxide powder, thus improving the accuracy of the copper plating amount in the dissolution tank. Furthermore, the weighing structure, displacement structure, and filter circulation pump work together to move and clean the weighing structure after adding copper oxide powder, further improving the accuracy of the copper plating amount in the dissolution tank. Finally, the use of a protective cover prevents copper oxide powder from splashing out when entering the dissolution tank.

The utility model discloses a kind of copper supplementing structure of spray copper dissolving tank, including the copper supplementing pipeline connected with spray copper dissolving tank, the copper supplementing pipeline is connected with at least two liquid inlet pipelines, adjacent liquid inlet pipeline is connected in parallel by connecting pipeline, the liquid inlet pipeline is communicated with the sewage pump in corresponding low tank, first control valve is mounted on the liquid inlet pipeline, second control valve is mounted on the connecting pipeline, cancel the original multiple copper supplementing pumps, using the suction of sewage pump original sewage pump Low-concentration copper electrolyte is sucked into liquid inlet pipeline, and the free switching of multiple liquid inlet pipelines can be realized by setting multiple control valves, so that the supply of different amounts of low-concentration copper electrolyte is realized.

The present patent of invention belongs to the technical field of material analysis for determining chemical properties and it is characterized by comprising a kit for determining the level of hair damage, including a reagent to be used and a reference scale containing a defined damage scale. Furthermore, the present patent also provides a method for using the kit, comprising the following steps: (i) determining Einitial (indicating the color value in the CIELAB space) of the hair sample using a spectrophotometer, for example, before performing desired hair treatments such as bleaching, blow-drying, coloring, among others; (ii) submerging the sample, for example, after the desired treatments, in copper sulfate present in the kit for one to three minutes; (iii) determining, using the spectrophotometer, the Efinal of the sample after reaction with the reagent; (iv) calculating delta E (Einitial − Efinal); and (v) comparing the result with the reference damage scale that forms part of the kit and defines at least three levels of damage.

The present application relates to a kind of low copper-containing waste liquid low-temperature evaporation drying crystallization depth electrolytic copper method, belong to industrial waste liquid resource processing technical field.The method is aimed at circuit board industry brownification-copper mixed waste liquid, sequentially carries out pretreatment, gradient negative pressure evaporation concentration, crystallization drying purification, adaptability pulse electrolysis and full-process recycling post-processing.By evaporation concentration, no chemical reagent is achieved, and low organic residue crystal is obtained by crystallization purification, and depth electrolysis is carried out using customized pulse electrolysis parameters and additives.The present application replaces traditional chemical breakage, avoids secondary pollution, and realizes efficient recovery of copper resources.The purity of final electrolytic copper is ≥99.95%, the total recovery rate of copper is ≥96.8%, the energy consumption per ton of copper is significantly reduced, the production of hazardous waste containing copper is reduced by more than 95%, the condensate reuse rate is ≥80%, and excellent environmental and economic benefits are achieved.

The utility model relates to the technical field of copper electroplating waste liquid recovery, in particular to a copper electroplating waste liquid copper sulfate recovery device which comprises a copper sulfate electroplating bath, a temporary storage tank, a heat exchanger, a factory service end ice water machine, a separator, a crystal collecting tank and a volatilization air exhaust dryer. An outlet of the copper sulfate electroplating tank is communicated with an inlet of the temporary storage tank, an outlet of the temporary storage tank is connected with an inlet of the heat exchanger, the heat exchanger is communicated with the factory service end water chiller, cold water of the factory service end water chiller circulates in the heat exchanger, and a filter screen is arranged at the bottom of the heat exchanger and communicated with the dilute waste liquid collecting tank. The copper electroplating wastewater discharge is improved, copper sulfate is separated out and purified through low-temperature crystallization and collected, waste liquid reduction and resource recovery are achieved, the environmental protection effect is optimized, meanwhile, a novel copper sulfate pentahydrate on-line auxiliary recovery process is constructed, simple recovery equipment is additionally arranged on the basis of the original copper electroplating process, and the copper electroplating wastewater is recycled. A waste reduction target can be achieved by invested a small amount of money, and the environment-friendly wastewater treatment cost is greatly reduced.

The invention belongs to the technical field of rare metal hydrometallurgy, and particularly relates to a method for deeply removing tungsten and molybdenum in a copper sulfate solution. According to the method, a copper sulfate solution and a sulfur source are mixed for a tungsten-molybdenum precipitation reaction, precipitation residues and impurity removal liquid are obtained after solid-liquid separation, and the copper sulfate solution contains tungsten-molybdenum impurities; the impurity removal liquid is subjected to adsorption deep impurity removal through ion exchange resin, a pure copper sulfate solution is obtained, the concentration of tungsten trioxide in the pure copper sulfate solution is smaller than or equal to 10 mg / L, and the concentration of the molybdenum element is smaller than or equal to 10 mg / L. According to the method provided by the invention, deep removal of tungsten and molybdenum in the copper sulfate solution is realized, and the tungsten and molybdenum concentrations in the copper sulfate solution can be reduced to 10 mg / L or below; meanwhile, the method provided by the invention does not use dangerous chemical reagents, is environment-friendly, lays a foundation for subsequent preparation of high-purity copper products, and is more suitable for industrial application.

The utility model discloses a copper sulfate mother liquor purification device which comprises a support, a treatment device is arranged on the support, the treatment device comprises a treatment tank, a tank cover, a rotating shaft, a scraping plate, a scraping block and a material mixing plate, the treatment tank is installed on the support, the tank cover is installed at the top end of the treatment tank, the rotating shaft is arranged in the treatment tank, and the scraping plate is connected to the outer side of the bottom end of the rotating shaft. The scraping block is installed on the outer side of the material mixing plate, the material mixing plate is installed on the outer side of the rotating shaft, a heating device is installed on the outer side of the treatment tank, a separation device is arranged below the treatment tank and comprises a separation bin, a treatment bin, a conveying pipe, a conveying bin, a flow guide block and filtering holes, the treatment bin is arranged below the treatment tank, and the separation bin is installed in the treatment bin; the conveying pipe is connected to one side of the conveying bin, the conveying bin is arranged on one side of the treatment bin, the flow guide block is installed in the separation bin, and the filter holes are formed in one side of the separation bin.

The invention belongs to the technical field of smelting recovery, and particularly relates to a method for high-value utilization of tungsten and molybdenum in molybdenum removal slag. The method comprises the following steps: slurrying the molybdenum-removed slag, and carrying out oxygen pressure acid leaching to obtain a leachate and tungsten-molybdenum-enriched slag; evaporating and concentrating the leachate to obtain a copper sulfate product; dissolving the tungsten and molybdenum enriched slag with ammonia water to obtain a mixed solution of ammonium tungstate and ammonium molybdate; the method comprises the following steps: diluting a mixed solution of ammonium tungstate and ammonium molybdate, adjusting the pH value with acid, carrying out multistage countercurrent extraction to obtain an ammonium molybdate solution, and carrying out acid precipitation crystallization on the ammonium molybdate solution to prepare an ammonium molybdate product; the obtained extraction saturated organic phase is subjected to multi-stage reverse extraction with an ammonium bicarbonate aqueous solution, and molybdenum reverse extraction liquid and the remaining extraction organic phase are obtained; and carrying out reverse extraction on the residual extracted organic phase to obtain an ammonium tungstate solution, and preparing an ammonium paratungstate product. By means of the method, copper, tungsten and molybdenum in the molybdenum removal slag can be separated, and copper sulfate, ammonium molybdate and ammonium paratungstate products are obtained; toxic and harmful gases are not generated, and the method is safe, environment-friendly and more suitable for industrial application.

The application discloses a method for removing arsenic from a copper sulfate solution, which comprises an oxidation and arsenic removal step, and specifically comprises the following steps: adding an arsenic-containing copper sulfate solution to be treated into an oxidizing agent to obtain material a through stirring reaction; adding an arsenic removal agent into the material a, adding a pH regulator to adjust the pH value of the solution to 3.5-4.5 to perform an arsenic removal reaction, and performing solid-liquid separation after the reaction to obtain arsenate precipitate and copper sulfate solution after arsenic removal; and the arsenic removal agent is iron sulfate. The application can guarantee product quality, optimize the process, reduce copper loss, protect stable operation of equipment, reduce comprehensive cost, eliminate arsenic pollution and compliance risks, and promote green and high-quality development of the copper smelting and deep processing industry.

This application pertains to methods of recovering metals from metal sulfides that involve contacting the metal sulfide with an acidic sulfate solution containing ferric sulfate and a reagent that has a thiocarbonyl functional group, wherein the concentration of reagent in the acidic sulfate solution is sufficient to increase the rate of metal extraction relative to an acidic sulfate solution that does not contain the reagent, to produce a pregnant solution containing the metal ions.

The invention belongs to the field of hydrometallurgy, and particularly relates to a method for removing impurities calcium, lead and zinc in copper sulfate, which comprises the following steps: (1) preparing a composite seed crystal; and (2) copper sulfate solution treatment. According to the scheme, the zirconium phosphate is loaded with the anhydrous calcium sulfate to prepare the composite seed crystal, the calcium sulfate component can induce calcium sulfate to separate out and precipitate in a high-temperature copper sulfate solution, the zirconium phosphate component has good adsorption and ion exchange effects on calcium, lead and zinc ions, and calcium, lead and zinc impurities in copper sulfate can be effectively removed through cooperation of the calcium sulfate component and the zirconium phosphate component.

The invention relates to the technical field of electroplating waste liquid treatment, in particular to a resourceful treatment method for electroplating waste liquid. The trace metal impurities in the waste liquid are adsorbed in situ by the phosphonic acid chelating resin in a strong acid system and are converted into the heterogeneous catalyst, and the continuous / pulse combined feeding strategy of potassium hydrogen peroxymonosulfate is matched, so that deep mineralization of stubborn organic matters and accurate separation of impurities such as iron and nickel are realized; and high-purity copper sulfate pentahydrate crystals are prepared through copper type resin buffering and a specific crystallization process on the premise of not introducing exogenous impurities. The method is free of secondary pollution, realizes high-valued total recovery of ultra-pure resources in the electroplating waste liquid, has remarkable economic and environmental benefits, and is suitable for resource treatment of the PCB and semiconductor electroplating waste liquid.

The invention belongs to the technical field of chemical production control, and provides a dynamic deviation compensation control method and system applied to solution feeding, and the method comprises the steps: obtaining the copper ion concentration in a copper-containing etching waste liquid, and obtaining a real-time measurement value in a reaction kettle; based on the copper ion concentration and the real-time measurement value, comprehensive disturbance characteristics are extracted through a multivariable frequency domain analysis method, the correlation degree between the comprehensive disturbance characteristics and all modes in a preset disturbance mode library is calculated, and a dominant disturbance mode and mode confidence are determined; deducing and generating a multi-parameter prediction baseline trajectory according to the dominant disturbance mode; selecting a corresponding optimization strategy from a preset optimization strategy library according to the dominant disturbance mode and the corresponding mode confidence, and generating an optimization target based on the optimization strategy and the multi-parameter prediction baseline trajectory; according to the method, the problems of unstable production and product quality caused by dynamic disturbance in the traditional copper sulfate pentahydrate production process are effectively solved.

The invention belongs to the technical field of waste lithium battery resource recovery, and particularly relates to a method for preparing iron-doped basic copper sulfate by recovering copper from waste lithium batteries and iron-doped basic copper sulfate, the method for preparing iron-doped basic copper sulfate by recovering copper from waste lithium batteries comprises the following steps: S1, adding a waste lithium battery negative electrode material into an acid solution, and stirring uniformly; after reaction, filtering to obtain a copper salt solution; s2, adding a trivalent iron salt into the copper salt solution to obtain a first solution; s3, adjusting the pH value of the first solution to 7-8 to obtain a second solution; s4, the second solution is subjected to a hydrothermal reaction, filtering, washing and drying are performed after the reaction, and iron-doped basic copper sulfate is obtained; according to the method, the iron-doped basic copper sulfate with adsorption and degradation functions on water pollution is synthesized by recovering copper from the waste lithium battery negative electrode material, so that the waste lithium battery negative electrode material is recovered and utilized, and organic matter pollution of the water is effectively removed.

The invention relates to a method for preparing copper sulfate pentahydrate based on PCB (printed circuit board) acidic copper-containing waste liquid and alkaline etching liquid, which comprises the following steps: S1, sequentially adding an oxidant and activated carbon into the acidic copper-containing waste liquid, then adding the alkaline etching liquid, and filtering to obtain a primary purified copper solution; s2, the primary purified copper solution and alkaline etching liquid are added into a reaction kettle at the same time for reaction, and then heat preservation and curing are conducted to obtain alkaline copper slurry; s3, carrying out solid-liquid separation on the alkaline copper slurry, and stirring and cleaning; s4, concentrated sulfuric acid is added into the cleaned alkaline copper slurry for acidification, and after alkaline copper is dissolved, a copper sulfate seed crystal is added for reaction to obtain a copper sulfate mixed solution; and S5, pumping the copper sulfate mixed solution into a cooling crystallization kettle for cooling crystallization, and carrying out centrifugal separation to obtain copper sulfate pentahydrate crystals. According to the method disclosed by the invention, the acidic copper-containing waste liquid and the alkaline etching liquid are subjected to cooperative treatment and are converted into high-purity copper sulfate pentahydrate through a process of pretreatment, synthesis, cleaning, acidification and crystallization, so that efficient conversion from complex hazardous wastes to high-value products is realized.

The utility model discloses copper sulfate concentrating and recycling equipment which comprises a fixing frame, a processing assembly is arranged on the fixing frame, the processing assembly comprises a cylinder body, an exhaust pipe, a feeding pipe, a shielding cover and a shell, the cylinder body is arranged on the fixing frame, the exhaust pipe is connected to the feeding pipe, the feeding pipe is arranged at the top of the cylinder body, and the shielding cover is arranged on the top of the cylinder body. The shielding cover is arranged on the feeding pipe, the shell is arranged on the outer side of the barrel, an adjusting assembly is arranged on the exhaust pipe and comprises a connecting pipe, a control pipe and an adjusting pipe, the connecting pipe is connected to one end of the exhaust pipe, the control pipe is rotationally connected to the connecting pipe, the adjusting pipe is rotationally connected to the control pipe, and the adjusting pipe is rotationally connected to the control pipe. And one end of the adjusting pipe is connected with the other end of the exhaust pipe, so that the technical problem that the recovery effect is possibly not ideal when the existing equipment is used for recovering copper sulfate and faces copper sulfate waste liquid with different concentrations and different types in the prior art is solved.

The invention discloses a silver removal method for preparing electrolyte for high-purity copper, and relates to the technical field of non-ferrous metal hydrometallurgy. The method specifically comprises the following steps that electrolyte for preparing high-purity copper in an electrolysis device is extracted in the electrolysis process, a silver removal agent is added into the electrolyte for preparing the high-purity copper, then stirring reaction is conducted, and the reacted electrolyte for the high-purity copper is obtained; and precisely filtering the reacted electrolyte for the high-purity copper, wherein the obtained filtrate is the electrolyte for preparing the high-purity copper after silver removal. According to the technology, the technical problem that the Ag content in the cathode high-purity copper obtained through electrolysis or electrodeposition exceeds 5N and above high-purity copper is solved, the technology has the advantages of being deep and environmentally friendly, equipment is simple, and the process is short.

The utility model belongs to the technical field of copper-containing waste liquid treatment, and discloses a copper-containing oxide treatment system which comprises a slurrying device, a stirring and slurrying device, a stirring and slurrying device, a stirring and slurrying device and a stirring and slurrying device, and is characterized in that the slurrying device comprises a slurrying tank inside which is used for accommodating copper-containing oxides and stirring and slurrying the copper-containing oxides to form slurry; the conversion device comprises a first reaction tank, a second reaction tank and a sulfuric acid storage tank, slurry discharged by the pulping tank can be conveyed into the first reaction tank and the second reaction tank respectively, sulfuric acid in the sulfuric acid storage tank can be conveyed into the first reaction tank and the second reaction tank respectively, and the slurry and the sulfuric acid can react to generate a dissolving solution; the separating device comprises a centrifugal machine, the first reaction tank and the second reaction tank are respectively connected with the centrifugal machine, the dissolving solution discharged by the first reaction tank and the second reaction tank can be conveyed to the centrifugal machine, and the centrifugal machine is configured to centrifugate the dissolving solution to obtain copper sulfate pentahydrate crystals and centrifugal filtrate. According to the utility model, the value of the copper-containing waste liquid can be further maximized.

The application discloses a method for efficiently extracting and stripping to recover copper in a high-acid high-iron solution, which comprises the following steps: firstly, mixing a high-acid high-iron copper-containing solution with a synergistic extractant, an acid-resistant stabilizer and a diluent to perform an extraction reaction; then, adding a sulfuric acid-oxalic acid mixed solution into an organic phase to perform stripping, and generating copper oxalate precipitate through complex reaction of oxalic acid and copper ions; finally, adding sulfuric acid into the copper oxalate precipitate and heating, separating copper sulfate crystals and oxalic acid solution after evaporation and crystallization, and returning the oxalic acid to the stripping system. The application adopts a composite synergistic extraction-acid-resistant stabilizer system, enhances selective adsorption of copper ions through the synergistic extractant, and avoids damage of high-concentration acid to the extractant by adding the acid-resistant stabilizer; a sulfuric acid-oxalic acid combined stripping precipitation system is adopted, copper in the oil phase is resolved through low-concentration sulfuric acid, the stripping rate is improved by driving the positive movement of the chemical equilibrium of the resolution process through complex precipitation of copper ions by oxalic acid; and the oxalic acid and the synergistic extractant are recycled, so that the process cost is effectively reduced.

The present application relates to heap leaching a base metal-containing material. A two stage heap leach method for leaching a base metal from a base metal-containing material. The method transfers at least a part of a pregnant leach solution from a 1st stage leach in a 1st heap, or a leach solution produced after processing the pregnant leach solution, to a 2nd stage leach in a 2nd heap. The method controls conditions in the 1st and 2nd leach stages to allow the method to operate effectively, particularly but not exclusively in cold climates, such as cold climates where there are large temperature variations during a day and across seasons.

This invention belongs to the field of metal ion separation technology, specifically disclosing a method for separating mixed sulfates. In the mixed sulfate separation method provided by this invention, the mixed sulfate is Ni-containing... 2+ Co 2+ Cu 2+ Or Li + K + Na + The specific steps of this invention for obtaining mixed sulfate solutions include: adding a salt phase building agent to the mixed sulfate solution and adjusting the pH to 4-5.5 to obtain a salt phase; mixing the salt phase with an oil phase and a polymer phase to generate a three-phase coexistence system; allowing the phases to separate by standing, and then adjusting the pH to 6-7.5 and allowing it to stand again to obtain a Cu- or Na-rich polymer phase, a Co- or K-rich oil phase, and a Ni- or Li-rich salt phase. This invention utilizes a combination of "multiple driving forces synergistic enhancement, cation-directed selection, and segmented acidity control" to achieve efficient and simultaneous separation of multiple metal ions in sulfate solutions containing nickel, cobalt, copper, lithium, sodium, or potassium.

The utility model relates to a kind of processing device for removing chlorine ion in copper sulfate solution in circulation, the processing device includes the first reaction kettle, first solid-liquid separation device, first evaporator, crystallization device and first centrifugal device connected in order along material conveying direction;The processing device also includes the second reaction kettle, second solid-liquid separation device, second evaporator and second centrifugal device connected in order along material conveying direction;The first solid-liquid separation device solid-phase outlet of first solid-liquid separation device is connected with second reaction kettle, and the first solid-liquid separation device liquid-phase outlet of first solid-liquid separation device is connected with first evaporator;Second solid-liquid separation device liquid-phase outlet of second solid-liquid separation device is connected with second evaporator;Processing device further includes drying device connected with the second solid-liquid separation device second solid-liquid separation device solid-phase outlet. That is, the utility model not only can remove chlorine ion in copper sulfate solution, but also can recycle copper compound.

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.

The utility model discloses a kind of electrolytic copper foil process's timing quantitative configuration additive device, storage unit, the lower side of the storage unit is connected with conveying pipe, electric valve is installed between the conveying pipe and the discharge port of storage unit lower side, power unit is installed on the conveying pipe for providing flow power to the additive entering into conveying pipe, still include control unit, the control unit and electric valve and power unit are electrically connected, the control unit includes microprocessor and timer, by setting control unit, timer and electric valve can be accurately controlled the amount of additive entering into conveying pipe, degree of automation is high.

To provide methods of recovering metals from an ore containing metal sulfides.SOLUTION: The methods involve contacting the metal sulfides with an acidic sulfate solution containing ferric sulfate and a reagent that has a thiocarbonyl functional group, where the concentration of reagent in the acidic sulfate solution is sufficient to increase the rate of metal ion extraction relative to an acidic sulfate solution that does not contain the reagent, to produce a pregnant solution containing the metal ions.SELECTED DRAWING: Figure 1

A process and method for producing a crystallized metal sulfate. The crystallized metal sulfate may be battery-grade. The method may comprise receiving a metal ion-containing stream and crystalizing a metal sulfate from the stream. The process may comprise receiving a stream from a metal processing plant, and crystalizing a metal sulfate from the stream. The process may be a metal electrowinning process comprising crystalizing a metal ion-containing stream to form a crystallized metal sulfate in a mother liquor. The process or method may comprise returning the mother liquor upstream or to the metal electrowinning process.