140results about "Copper sulfates" patented technology

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 an efficient and energy-saving purification method for a copper electrolyte. The purification method comprises the following steps: performing MVR (Mechanical Vapor Recompression) concentration; cooling and crystallizing; filtering and separating; electrodeposition copper and impurity removal by a circulation method; freezing and crystallizing; performing centrifugal separation; according to the method, in the MVR concentration process, a high-energy-efficiency steam compressor is used for compressing secondary steam generated by evaporation of the copper electrolyte, the enthalpy of the secondary steam is improved, and the secondary steam with improved heat energy is pumped into a plate heat exchanger to exchange heat with the copper electrolyte, so that the existing heat energy of the secondary steam is recycled; therefore, the consumption of external steam can be reduced to realize evaporation and concentration of the copper electrolyte to produce crude copper sulfate; in the circulation method electrodeposition copper removal and impurity removal process, the crystallization mother liquor is supplemented into the impurity removal circulation liquid, so that copper ions can be kept in an efficient impurity removal concentration range, and the removal efficiency of impurities such as arsenic is improved; a refrigerator is adopted to cool the electrolyte after electrodeposition copper removal and impurity removal, and then a centrifugal machine is adopted to realize solid-liquid separation of nickel sulfate crystals.

In one aspect, a preparation method of iron phosphate includes: mixing pyrite cinder and an sulfite evenly in water to obtain a first mixed system; adding phosphoric acid and a buffer to the first mixed system to perform a leaching reaction; performing a first solid-liquid separation on a slurry obtained from the leaching reaction to obtain a first filtrate and a first residue; introducing air into the first filtrate and then performing a first stirring reaction on the first filtrate; performing a second solid-liquid separation on a slurry obtained from the first stirring reaction to obtain a second filtrate and a second residue; and calcining the second residue to obtain iron phosphate.

The invention belongs to the technical field of waste battery recovery, and particularly relates to a short-process method for recovering battery-grade lithium carbonate and valuable metals from waste ternary lithium battery black powder. According to the method, a lithium closed-loop technical system of blank roasting, cyclic leaching, synergistic impurity removal, lithium phosphate aluminum removal, directional extraction and split-flow extraction of lithium, nickel and magnesium and seed crystal induction parallel flow lithium precipitation is constructed, a roasting aid, a reducing agent and an aluminum removal agent do not need to be added in the whole process, and the redundant processes of traditional lithium carbonate purification such as carbonization, resin purification and pyrolysis are omitted; the lithium liquid concentration cost is saved, no hazardous waste exists, green and clean production is achieved, and the quality of battery-grade products is guaranteed through collaborative impurity removal and directional extraction.

The invention discloses a method for preparing copper sulfate from PCB etching liquid, and belongs to the technical field of PCB etching liquid treatment.The method comprises the following steps that alkaline PCB etching waste liquid and acidic PCB etching waste liquid are mixed to obtain basic copper chloride precipitate; reacting the basic copper chloride precipitate with concentrated sulfuric acid to obtain a copper sulfate crude product; adding a hydrogen peroxide solution into the copper sulfate crude product solution, stirring and reacting for 0.5-2 hours, adding a precipitator to adjust the pH value to 3.5-4, and carrying out solid-liquid separation to obtain an impurity-removed solution; the impurity removal solution is introduced into an adsorption column filled with modified activated carbon, then evaporation concentration, cooling crystallization and reduced-pressure suction filtration are carried out, and copper sulfate is obtained.According to the method, the processes of acid-base neutralization, oxidation impurity removal, adsorption impurity removal and recrystallization are adopted, and the low-cost and efficient recovery and purification technology is achieved; and the recovery efficiency is improved to the maximum extent and the cost is controlled while the high purity of the product is ensured.

The invention discloses a device for preparing copper sulfate from waste etching liquid. The device comprises a box body, wherein a separation chamber, a reaction chamber and a concentration chamber are sequentially arranged inside the box body from bottom to top, the separation chamber and the reaction chamber being connected via a connecting pipe. A buffer tank and a plurality of filter tanks are fixed on the top of the box body and are connected via a connecting pipe to the top of the concentration chamber. The concentration chamber is provided with a heating pipe. A stirring assembly is provided on one side of the reaction chamber. An extraction assembly is provided on the top of the separation chamber. A concentrated sulfuric acid tank is provided on one side of the box body and is connected via a connecting pipe to the top of one side of the reaction chamber. A fan is provided on the other side of the box body and is connected to the top of one side of the separation chamber. An air outlet pipe is also provided and is connected to the tops of the concentration chamber and the separation chamber, respectively. The air outlet pipe is connected to a purifier. Several of the connecting pipes are provided with flow meters and solenoid valves.

The invention provides a collaborative recovery method for directionally converting SO2 into waste tire cord steel wires, and belongs to the technical field of solid waste recycling. According to the collaborative recovery method provided by the invention, the granular waste tire cord steel is roasted in an SO2 / O2 / N2 mixed atmosphere and an air atmosphere in sequence, and then the valuable metal components copper, zinc and iron in the waste tire cord steel wire are directionally converted into copper sulfate, zinc sulfate and iron oxide through further leaching and magnetic separation processes. According to the method, efficient recovery and resource utilization of valuable metal components of copper, zinc and iron in the waste tire cord steel wires are achieved, an innovative solution is provided for high-value utilization of the waste tire cord steel wires, and the method has good application prospects and social and ecological benefits.

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 relates to a method for recycling selenium and tellurium from copper anode slime copper separation liquid step by step, and aims to solve the technical problems that pyrogenic separation is needed after selenium and tellurium are extracted, and the treatment process flow is long. According to the technical scheme, the method comprises the following steps: (1) heating, concentrating, cooling and filtering the copper anode slime copper separation liquid; (2) detecting the content of selenium and tellurium; (3) carrying out sodium hydrogen sulfite reduction on filtrate I to extract selenium; (4) chlorinating filtrate II and then reducing to obtain crude tellurium; after the copper separation liquid is treated step by step, step-by-step recovery of selenium and tellurium in the copper separation liquid is achieved through a one-step method, the recovery process of selenium and tellurium is shortened, the recovery rate of selenium and tellurium in the copper anode slime is increased, and the economic benefits of smelting plants are improved.

The utility model relates to the technical field of crystallization tanks, in particular to an energy-saving rapid crystallization tank for producing copper sulfate pentahydrate, which comprises a tank body, a tank cover is fixedly mounted at the top ends of two sliding rods, a rotating rod is rotatably mounted on the lower surface of the tank cover, mounting blocks are fixedly sleeved on the rotating rod at equal intervals, mounting ports are symmetrically formed in the surfaces of the mounting blocks, and the mounting ports are fixedly connected with the tank cover. A rotating shaft is horizontally and rotatably mounted in the mounting opening, stirring rods are fixedly connected to the rotating shaft in a sleeving manner, and every two adjacent stirring rods are hinged through a hinge rod; the top end of the rotating rod is sleeved with a sliding block in a threaded mode, connecting rods are fixedly installed on the left side wall and the right side wall of the sliding block, and abutting rings are fixedly installed at the bottom ends of the two connecting rods. When the rotating rod drives the plurality of stirring rods to rotate, one ends of the plurality of stirring rods can also rotate up and down in a reciprocating manner, so that the stirring amplitude of the stirring rods is increased, the stirring is not only the rotation in a single direction any more, and the crystallization efficiency is improved.

The invention discloses a method for recovering metal from electronic waste or leach residue thereof, the electronic waste or leach residue comprising copper element and one or more lithium compounds, the method comprising: leaching the electronic waste or leach residue with a leaching solution comprising ammonium sulfate in the presence of an oxidizing agent, a leaching solution containing copper ions and lithium ions and solid residues are provided; and separating the leachate and the solid residue.

The copper sulfate recovery device comprises a stirring box, a pushing box is fixedly installed on the right side of the stirring box, a baffle is fixedly arranged on the left side of the stirring box, a reaction box is fixedly installed below the stirring box, and meanwhile the pushing box and the baffle are both located above the reaction box; the system further comprises; a double-head motor is fixedly installed in the stirring box through bolts, rotating rods are fixedly connected to the upper end and the lower end of the double-head motor, stirring fans are fixedly arranged on the outer sides of the upper portions of the rotating rods, and meanwhile the stirring fans are rotationally arranged in the stirring box; a spring is arranged in the pushing box, the left end of the spring is fixedly connected with a sliding rod, the sliding rod is arranged in the pushing box in a sliding mode, meanwhile, the left end of the sliding rod is fixedly connected with two sets of push rods, and the push rods penetrate through the stirring box. According to the copper sulfate recovery device and the recovery method thereof, copper in the wastewater is replaced by the iron powder, so that too high crystal impurities of subsequent copper sulfate are avoided, and the crystallization rate of the copper sulfate can be increased.

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 relates to the industrial fields of metallurgy, electronics and the like, and provides an acid waste liquid and waste gas treatment method which comprises the following steps: step 1, injecting an acid waste liquid into a reaction container, sequentially adding lime powder and light calcium carbonate to carry out neutralization reaction, adjusting the pH value to 4-6.5, precipitating a copper-containing compound, and carrying out solid-liquid separation to obtain copper slag and filtrate; 2, concentrating and crystallizing the filtrate in the step 1 to prepare calcium chloride; reacting the copper slag with sulfuric acid to generate copper sulfate; and thirdly, the acid waste gas is introduced into an incinerator and incinerated at the temperature of 800-1000 DEG C, and incineration tail gas containing SO2 is generated. The copper recovery rate in the waste liquid is greater than or equal to 98%; the waste gas sulfur recovery rate is larger than or equal to 99.99%, the sulfuric acid yield is larger than or equal to 96%, waste liquid-waste gas-product closed-loop circulation is achieved, waste liquid is utilized by the incinerator for neutralizing waste heat, and energy consumption is reduced by 30%. The catalytic oxidation unit adopts a honeycomb Pt catalyst, the pressure loss of the system is reduced by 40%, and the operation stability is improved.

The invention provides a copper sulfate water-cooling crystallization tank, and relates to the technical field of water-cooling equipment, the copper sulfate water-cooling crystallization tank comprises a tank body, the tank body comprises a first conveying pipeline and a second conveying pipeline, the first conveying pipeline comprises a top platform and a water pipe, and the surface of the top platform is provided with a passing gap for the water pipe to pass through; a sealing device is arranged on the outer side of the passing notch and comprises a second sealing assembly located on the inner side and a first sealing assembly located on the outer side, the first sealing assembly and the second sealing assembly are both detachably connected with the top platform, and the second sealing assembly comprises a second cover plate and a sealing ring. A first cavity is formed in the first sealing assembly. A double-layer sealing structure can be formed on the inner water jacket and the outer side of the water jacket, a better protection effect can be achieved while maintenance is facilitated, liquid leakage is avoided, and continuous production is guaranteed.

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 discloses an intelligent charging process for dissolving copper in a lithium battery copper foil, and relates to the technical field of lithium battery copper foil processing. Performing coordinate calibration according to the position of a storage rack in the field operation area, each copper coil placement point on the storage rack, the position of a tank cover of the copper melting tank and the feeding point of each copper melting tank; the calibrated coordinates are imported into a remote control system; controlling the travelling crane lifting appliance to move to the position above the copper melting tank needing feeding through a remote control system, opening a tank cover, moving the tank cover to the position above the adjacent copper melting tank, and stacking the tank cover on the tank cover of the copper melting tank; a remote control system is used for controlling the traveling crane lifting appliance to move to the position above the corresponding copper coil of the storage frame, lifting the copper coil, then moving to the corresponding feeding point above the uncovered copper melting tank, and feeding the copper coil into the copper melting tank; and the remote control system is used for controlling the travelling crane lifting appliance to move to the position above the adjacent copper melting tank with the tank cover, lifting the tank cover, moving to the position above the original copper melting tank, covering the original copper melting tank with the tank cover, and sealing.

The invention discloses a 4.5 [mu] m ultra-thin lithium battery copper foil prepared with high current density and a preparation process thereof. The preparation process sequentially comprises the steps of dissolving copper to prepare a solution, preparing an additive and manufacturing a raw foil. The copper dissolving liquid preparation is realized through a soaking type microporous copper dissolving device; the additive is prepared by dissolving a leveling agent, a brightening agent, an inhibitor and a nonionic active agent in water and then uniformly mixing; in the step of manufacturing the raw foil, a prepared copper sulfate solution and an additive are mixed to obtain an electrolyte, the electrolyte is conveyed into a raw foil machine through a pipeline, electrolysis is carried out under the high current density of 6100-6500 A / m < 2 >, and the 4.5-micron ultra-thin lithium battery copper foil is obtained. By adopting the technical scheme provided by the invention, the technical problems of low copper dissolving efficiency and complex additive ratio of a 4.5-micron preparation process under high current density are solved.

The invention relates to the technical field of wastewater treatment, and discloses a treatment process of sulfur-free and iron-free copper-containing wastewater and application of the treatment process in copper sulfate recovery, the process comprises the following steps: (1) physically filtering the copper-containing wastewater, adjusting the pH value to be less than 4, carrying out oxidation pretreatment, and feeding the copper-containing wastewater into an ion exchange system; and (2) after adsorption, introducing the wastewater into an adsorber containing adsorption particles, applying a magnetic field, carrying out solid-liquid separation, detecting that Cu < 2 + > in the liquid is less than 0.5 mg / L, adjusting the pH value to be neutral, and then discharging. Compared with a traditional copper-containing wastewater treatment process, a polypeptide magnetic adsorption step is added behind an ion exchange system, when Cu < 2 + > in the ion exchange system is about 50 mg / L, Cu < 2 + > is transferred into an adsorber for magnetic adsorption, and the wastewater treatment period can be greatly shortened. In the recovery process of the copper sulfate, the concentration of Cu < 2 + > in the copper-containing wastewater desorption solution is high, and the concentration of impurity ions is low, so that the subsequent recovery and purification process of the copper sulfate is simplified, and the cost is reduced.

The utility model discloses a copper sulfate crystal recovery device. Belongs to the technical field of copper sulfate recovery. According to the technical key points, the device comprises a box body, a box cover is arranged on the box body, and a material conveying pipe which is connected with external crystallization equipment and is communicated with the box cover is arranged above the box body; two filter screens used for draining water are symmetrically and obliquely arranged in the middle of the interior of the box body, and a spiral discharging assembly is arranged between the oblique lower ends of the two filter screens; an umbrella-shaped material guide plate matched with the two filter screens is arranged at the near end part of the opening end of the box body below the material conveying pipe; a liquid pumping pipe for recycling liquid is arranged at the bottom of the box body; the utility model aims to provide a copper sulfate crystal recovery device which is simple in structure and capable of automatically discharging. The method is used for copper sulfate crystal recovery.

The utility model relates to the technical field of waste liquid treatment, and particularly discloses a comprehensive treatment system for copper-containing waste liquid, which comprises an acidic copper-containing waste liquid tank, an alkaline copper-containing waste liquid tank, a synthetic reaction tank, a filter press, a copper recovery system, a neutralization tank, an intermediate tank, an ion exchange device, a heat exchange device, a second evaporator and a crystallization device, the acidic copper-containing waste liquid tank and the alkaline copper-containing waste liquid tank are both connected with the synthetic reaction tank, the output end of the synthetic reaction tank is connected with the filter press, and the residue output end of the filter press is connected with the copper recovery system, so that residues containing basic copper chloride are conveyed to the copper recovery system. The copper recovery system is used for recovering copper elements in basic copper chloride; the filtrate output end of the filter press, the neutralization tank, the intermediate tank, the ion exchange device, the heat exchange device, the second evaporator and the crystallization device are connected in sequence. According to the device, copper resources can be recycled, solid ammonium salt can be prepared, and the reutilization rate of the resources is improved.

The present invention discloses an electronic grade copper sulfate and a purification method and application thereof. The copper sulfate purification method of the present invention comprises the following steps: S1, impurity removal: adding a precipitant to an oxidized copper sulfate crude solution, adjusting the pH value to 3.5-4, and obtaining a copper sulfate impurity removal liquid after solid-liquid separation; the precipitant comprises at least one of ammonia water, ammonium bicarbonate, ammonium carbonate, copper hydroxide or basic copper carbonate; S2, oil removal: removing oil from the copper sulfate impurity removal liquid by adsorption to obtain a copper sulfate purified liquid; S3, recrystallization: evaporating and concentrating the copper sulfate purified liquid, cooling and crystallizing, controlling the crystal yield to be ≤60%, and obtaining purified copper sulfate. The present invention adopts a specific precipitant and adjusts to a specific precipitation pH value, and then combines adsorption oil removal and recrystallization to control a specific crystal yield, so that the copper sulfate finally obtained has high purity, and the total content of metal impurities and TOC content are both low.

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 invention discloses a micropore copper dissolving and liquid preparing device for producing ultra-thin lithium battery copper foil, which comprises a copper dissolving tank tower body, a dirty liquid tank, a copper supplementing pump, a copper supplementing pump, a copper supplementing pump, a copper supplementing pump, a copper supplementing pump, a copper supplementing pump, a copper supplementing pump, a copper supplementing pump, a copper supplementing pump, a copper supplementing pump, a copper supplementing pump, a copper supplementing pump and a copper supplementing pump, wherein the top inlet of the dirty liquid tank is connected with a liquid returning opening of a foil generating machine; the top liquid returning opening is connected with the copper dissolving tank tower body; the water return port is connected with the liquid outlet in the bottom of the copper dissolving tank tower body through the circulating pump, and the water outlet is connected with the liquid inlet of the copper dissolving tank tower body; the sieve plate is horizontally arranged at the bottom of the inner wall of the copper dissolving tank tower body; the liquid inlet pipe is arranged in the copper dissolving tank tower body, an annular pipe is arranged at the outlet end of the liquid inlet pipe, the annular pipe is arranged at the bottom of the copper dissolving tank tower body and located on the lower portion of the sieve plate, liquid outlet holes are evenly distributed in the pipe wall of the annular pipe, and the inlet end of the annular pipe is connected with a liquid inlet of the copper dissolving tank tower body; the air inlet pipe is arranged in the copper dissolving tank tower body, the inlet end of the air inlet pipe is connected with an external air supply system, and the outlet end is arranged at the bottom of the copper dissolving tank tower body.

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 present invention provides a method for producing iron phosphate and a method for producing lithium iron phosphate. The method for producing iron phosphate includes the steps of: uniformly mixing sulfate slag and sulfite with water to obtain a first mixture; adding phosphoric acid and a buffer to the first mixture to perform a leaching reaction; performing a first solid-liquid separation on the slurry obtained after the leaching reaction to obtain a first filtrate and a first filter cake; introducing air into the first filtrate to perform a first stirring reaction; performing a second solid-liquid separation on the slurry obtained after the first stirring reaction to obtain a second filtrate and a second filter cake; and calcining the second filter cake, the pressure of the leaching reaction is 0.25-0.5 MPa, the time is 1-2 hours, the pH of the reaction system of the leaching reaction is 1.5-3, and the buffer includes sodium dihydrogen phosphate and / or disodium hydrogen phosphate. The method for producing iron phosphate utilizes an iron source in sulfate slag, which can reduce the production cost of iron phosphate and is simple and easy to operate.

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.

To provide an industrially viable and cost-efficient process for large-scale preparation of copper fungicidal compounds selected from copper oxide, copper oxychloride, copper acetate, copper carbonate, copper hydroxide, copper naphthenate, copper oleate, copper silicate and tribasic copper sulfate.SOLUTION: A fungicidal formulation comprises: at least one copper fungicide having a D50 particle size of 3-20 micrometers; and at least one agrochemically acceptable excipient.SELECTED DRAWING: None

The invention discloses a preparation method and application of high-purity copper sulfate, and the preparation method comprises the following steps: reacting ammonia water with a copper chloride solution to obtain basic copper chloride; adding sulfuric acid into the basic copper chloride for dissolving, and removing impurities to obtain an acidic impurity-removed solution; reacting the acidic impurity removal liquid with the alkaline impurity removal liquid to obtain basic cupric carbonate and / or copper oxide; and adding sulfuric acid into the basic cupric carbonate and / or copper oxide for reaction, and cooling and crystallizing to obtain the high-purity copper sulfate. According to the preparation method of the high-purity copper sulfate, metal, nonmetal and other impurities in the raw materials can be removed, the impurity removal effect on trace impurities is obvious, new impurities are not introduced in the preparation process, the process is simple, industrial production can be achieved, and the obtained high-quality copper sulfate can be applied to the electroplating liquid and has good application prospects. Especially in the fields of electroplating of precision elements sensitive to impurities and semiconductors.