76 results about "Zinc electrowinning" patented technology

The utility model discloses an electrolytic zinc sheet receiving and stacking device, and belongs to the technical field of electrolytic zinc sheet stacking. The stacking machine comprises a conveying belt device, a conveying wheel device, a push rod device and a stacking box device. The conveying belt device is installed on the front side of the conveying wheel device, and the push rod device and the stacking box device are installed on the left side and the right side of the conveying wheel device. According to the utility model, the conveyor belt device is arranged at a zinc sheet stripping outlet, and the zinc sheet with an inclined direction can be blocked by the limiting baffle plate to adjust the posture after being conveyed to the conveying wheels by the conveyor belt, and then is pushed to the forklift plate in the stacking box by the push rod to be flattened. The stripped zinc sheets can be tidily stacked on the forklift plate after being subjected to the operation, the problems that the zinc sheets are bent, folded, irregularly arranged and the like in the stacking process are solved, the production efficiency is effectively improved, and the efficiency of the whole production process of the zinc sheets is guaranteed.

The utility model relates to a recyclable cathode plate cross beam for electrolytic zinc, which belongs to the field of cross beams and comprises a cross beam body, a positioning component is mounted on the cross beam body, a plug-in component is mounted on the cross beam body, and the positioning component comprises two hanging lugs clamped with the top of the cross beam body. And the bottoms of the two hanging lugs are each fixedly provided with two clamping concave blocks, the top of the cross beam body is provided with a clamping rod, and the interior of the cross beam body is fixedly provided with two conductive blocks. According to the recyclable cathode plate cross beam for electrolytic zinc, by installing the positioning assemblies, when the hanging lugs and the cross beam are welded, the hanging lugs can be preliminarily limited and installed, rapid welding of the hanging lugs and the cross beam body is facilitated, the welding efficiency and quality are improved, by installing the inserting assemblies, the hanging lugs can be conveniently fixed, and the practicability is high. The connecting strength between the hanging lugs and the cross beam is greatly improved, the cross beam is not prone to fracture along a welding seam in the using process, and the service life of the cross beam is prolonged.

The invention discloses a method for producing cuprous oxide by utilizing low-grade purified copper slag in a zinc hydrometallurgy process, and belongs to the technical field of purified copper slag. The invention relates to a method for producing cuprous oxide by utilizing low-grade purified copper slag in a zinc hydrometallurgy process. The method mainly comprises the following steps: acid leaching and impurity removal; the pre-leached filter residues are mixed with dilute sulphuric acid, air is introduced to serve as an oxidizing agent for oxidation leaching, after leaching, the pH is adjusted to 4.0-5.0 through CaCO3, and copper-containing leaching liquid is obtained through filtering; adding dextrose monohydrate into the copper-containing leachate, and adjusting the pH value by using NaOH; according to the method, through the closed-loop process of acid presoaking impurity removal, air oxidation leaching, glucose reduction and cuprous oxide Cl <-> removal, conversion from harmless treatment to resource high-value utilization of the low-grade copper slag is achieved, air is used for replacing KMnO4, MnO2 and other chemical oxidants, the cost is reduced, no harmful by-product exists, the green metallurgy requirement is met, and the method is suitable for industrial production. The prepared cuprous oxide is directly used for removing Cl <-> from a supernatant in electrolytic zinc, and the double contradiction of copper slag dilution and high cost of a Cl <-> removing agent in the industry is solved.

The utility model discloses a diaphragm system for electrolytic iron, electrolytic zinc or electrodeposited nickel, which belongs to the technical field of electrolytic equipment and comprises a cathode frame and an anode frame which are arranged in parallel, the anode frame is detachably mounted on the cathode frame, a diaphragm bag is sleeved outside the anode frame, a first through groove is arranged on the anode frame, and the diaphragm bag covers the through groove; first connecting blocks are arranged at the two ends of the lower end of the cathode frame, and when the anode frame is installed on the cathode frame, the lower end of the anode frame makes contact with the upper ends of the first connecting blocks. The anode frame is detachably mounted on the cathode frame, so that the anode frame needing to be replaced can be conveniently and quickly taken out from the cathode frame, and the diaphragm system can be quickly disassembled, assembled, maintained and cleaned; the first connecting block is in contact with the lower end of the anode frame, and anolyte flows out of the anode frame through the first through groove; the cathode frame disclosed by the utility model is simple in structure and low in production cost; and the production and use of electrolytic iron, electrolytic zinc or electrodeposited nickel can be met.

The utility model provides an electrolytic zinc purification device capable of removing impurities. The electrolytic zinc purification device comprises a liquid storage tank; a partition plate is fixedly connected into the liquid storage tank, four sets of vertical rods are fixedly connected to the upper end of the partition plate, a top plate is fixedly connected to the upper ends of the vertical rods, a motor is arranged at the bottom of the top plate, the output end of the motor is fixedly connected with a rotating disc, the rotating disc is located at the upper end of the top plate, and a transverse plate is fixedly connected to the upper end of the rotating disc. The utility model provides an electrolytic zinc purification device capable of removing impurities, which is characterized in that soaked ion exchange resin is filled into a tubular column, then a zinc solution is poured into a front variable-diameter groove, the solution can be subjected to impurity removal through ion exchange of the ion exchange resin, and the zinc solution after impurity removal flows into a groove at the front end in a liquid storage groove; and then the solution is controlled to flow out through the electromagnetic valve, the zinc solution flows into the electrolytic bath to be electrolyzed, and impurities can be removed before the zinc solution is electrolyzed through the mechanism, so that the quality of electrolyzed zinc is prevented from being influenced by the impurities.

The invention discloses a method for determining sulfate radicals in an ammonia chloride process electrolytic zinc solution, and relates to the technical field of solution ion content determination, and the method comprises the following steps: adding a precipitator into a sample solution to generate a barium sulfate precipitate; adding a magnesium source and a chelating agent, titrating by using a standard chelating agent solution under the condition that the pH value is 9-11 and the end point is indicated by an indicator, and measuring the volume V2 of the consumed chelating agent; taking the same amount of sample solution, indicating the end point by using the indicator under the same pH value, titrating by using the standard chelating agent solution, and measuring the volume V3 of the consumed chelating agent; carrying out a blank experiment, and measuring the volume V1 of the consumed chelating agent; and calculating the content of sulfate radicals in the electrolytic zinc sample solution according to V1, V2, V3, the volume V of the sample solution and the concentration of the standard chelating agent solution. According to the method, the influence of a zinc matrix, calcium and magnesium is quantitatively eliminated, so that the determination result is highly matched with the actual content, and the color change of a titration end point is sharper by adding a magnesium source.

The invention relates to a method for inhibiting adhesion of crystals on the surface of a zinc electrodeposition circulating tank, and relates to the technical field of zinc electrodeposition smelting. According to the method for inhibiting the adhesion of the crystals on the surface of the zinc electrodeposition circulating tank, the PP film is adopted as a circulating liquid contact surface, so that the surface energy of the whole chute can be reduced, the contact angle can be increased, the wetting probability and adhesion binding force of the circulating liquid are reduced, and the adhesion of the crystals on the surface of the chute is effectively inhibited; harmful impurities are prevented from entering an electrolytic bath after glass fiber reinforced plastic adherends fall off, and the zinc electrodeposition efficiency and the zinc sheet quality level of follow-up production are guaranteed.

The utility model discloses a zinc sheet stacking device based on an automatic zinc stripping machine, and belongs to the technical field of electrolytic zinc sheet stacking devices. The device comprises a chute device, a transfer device and a stacking device, the chute top of the chute device is mounted at the discharge port of the receiving box, the transfer device is arranged at the chute bottom of the chute device, and the stacking device is arranged at the rear end of the transfer device. According to the automatic zinc stripping machine, zinc sheets are conveyed through the chute device by means of the gravity of the zinc sheets, a plurality of processes of zinc sheet stacking of an original automatic zinc stripping machine are omitted, complexity and failure rate in the zinc sheet stacking process are reduced, production efficiency and stability are improved, meanwhile, due to the fact that the roller conveying belt is arranged, production efficiency is improved, and production cost is reduced. And long-distance stable transportation of zinc sheets can be guaranteed, and meanwhile, the device can adapt to different site conditions.

The utility model relates to a hoisting device for a zinc plate, and relates to the technical field of electrolytic zinc. A zinc plate lifting device comprises a lifting frame and lifting hooks, and the lifting hooks are arranged at the bottoms of the two sides of the lifting frame in an array mode. Through the arrangement of the first gasket, the first sleeve and the second gasket, after the lifting hook is installed on the lifting beam, the first sleeve can separate the inner wall of the first through hole from the lifting hook, the first gasket can separate the lower side wall of the lifting beam from a first nut on the lifting hook, and the second gasket can separate the upper side wall of the lifting beam from a second nut on the lifting hook, so that the lifting hook is convenient to disassemble and assemble. The metal part between the lifting beam and the lifting hook is not in direct contact, the first gasket, the first sleeve and the second gasket which are made of nylon materials effectively block current circulation, current loss is avoided, and safety of operators and normal operation of equipment are effectively guaranteed.

The invention discloses an ultrasonic electrodeposition coupling system and method for improving zinc electrodeposition quality, and belongs to the technical field of hydrometallurgy, the system comprises an ultrasonic electrodeposition cell, an ultrasonic generation system, a solution circulation system and a heating temperature control system; a plurality of cathode plates and anode plates are alternately arranged in the ultrasonic electrodeposition cell at intervals; the ultrasonic generation system comprises an ultrasonic generator, and the ultrasonic generator is electrically connected with the ultrasonic probe and the ultrasonic vibrator through cables; the solution circulating system comprises a solution circulating tank, a peristaltic pump, a liquid inlet pipe and a liquid discharge pipe, and the peristaltic pump conveys an electrodeposition liquid in the solution circulating tank into the ultrasonic electrodeposition tank through the liquid inlet pipe for an electrodeposition reaction; the heating temperature control system comprises a heating resistor, a thermocouple, a heating resistor power supply electrically connected with the heating resistor, and a rectification power supply electrically connected with the electrode system. Through the synergistic effect of the composite additive and the ultrasonic technology, the negative influence of impurities on zinc deposition is effectively inhibited, and the current efficiency and the zinc product quality are remarkably improved.

The application discloses a method and system for determining the content of calcium and magnesium in a zinc solution electrolyzed by a chlorine-ammonia method, and the method comprises the following steps: in a solution with PH equal to 10, taking sodium potassium tartrate and triethanolamine as masking agents, taking acid chrome blue K-naphthol green B as an indicator, titrating with EDTA until the solution is pure blue, and determining the total content of calcium and magnesium; in a strong alkaline solution with PH equal to or greater than 12, taking triethanolamine as a masking agent, taking a calcium indicator as an indicator, titrating with EDTA until the solution is pure blue, and determining the content of calcium. The method can accurately determine the content of calcium and magnesium in the zinc solution electrolyzed by the chlorine-ammonia method, is used for guiding the formula of a production raw material, and can timely remove calcium and magnesium in the solution, so that the production is not seriously affected.

The present invention relates to a cathode plate for electrolytic zinc, belonging to the technical field of zinc electrowinning. The cathode plate for electrolytic zinc of the present invention comprises a conductive beam and an aluminum cathode plate fixedly arranged at the lower end of the conductive beam, wherein a titanium-based / amorphous metal oxide layer is in-situ coated above the liquid level line of the aluminum cathode plate, and a titanium-based / composite ceramic layer is in-situ coated along the vertical direction on both sides of the aluminum cathode plate, the conductive beam comprises a conductive aluminum beam and an aluminum-clad copper composite conductive head fixedly arranged at both ends of the conductive aluminum beam; the amorphous metal oxide layer is Ta-Zr-CaO x The oxide layer comprises a titanium-based / composite ceramic layer composed of a porous nano-TiO2 intermediate layer and a nano-ZrO2-SiO2-Al2O3-B4C composite outer layer. Compared to conventional 1070 aluminum cathode plates, the cathode plate for electrolytic zinc of the present invention has a cathode lifespan that is doubled in electrolytic zinc solutions containing high levels of chlorine and fluoride ions, without changing the electrolytic cell structure. The aluminum cathode plate has a low interface corrosion rate at the liquid level, eliminates the need for side strips, reduces cell voltage by over 10%, and improves current efficiency by over 2%.

The cathode plate comprises a conductive beam, an aluminum plate and two titanium plates, the lower end of the conductive beam is fixedly connected with the upper end of the aluminum plate, the upper portion of the side wall of the aluminum plate is connected with the two titanium plates through a plurality of screws, the top of the conductive beam is fixedly connected with two lifting lugs, one end of the conductive beam is fixedly connected with a conductive head, and the other end of the conductive beam is fixedly connected with the aluminum plate. The end, away from the conductive head, of the conductive beam is sleeved with an insulation sleeve. The cathode plate is easy and convenient to manufacture, the titanium plate can be repeatedly used and can also be directly applied to an existing cathode plate made of a pure aluminum material, and the problems that the cathode plate made of the pure titanium material is high in cost, poor in electric conductivity and firm in adhesion of separated zinc are solved. The two titanium plates are located above and below the liquid level line of the aluminum plate, the corrosion resistance and the knocking resistance of the cathode plate are improved through the liquid level upper part, zinc is conveniently separated out to be opened in the titanium plates through the liquid level lower part, the labor intensity of workers is reduced, mechanical zinc stripping is facilitated, the service life of the cathode plate can be prolonged, the production cost is saved, and the economic benefits are improved.

The application discloses a silent precise pre-stripping device for electrolytic zinc and electrolytic copper and relates to the technical field of metallurgy. The device comprises a rack, a pre-stripping device and an electrode plate. The pre-stripping device is arranged on the rack and comprises a guide plate, an inner swing arm, a cutter head and a driving device. A guide groove is arranged on the sidewall of the guide plate. A connecting shaft is arranged on the inner swing arm and is matched with the guide groove. The inner swing arm is arranged on the guide plate through the matching of the connecting shaft and the guide groove. The cutter head is arranged on the lower end of the inner swing arm and faces the electrode plate. The driving device is connected with the inner swing arm and can drive the inner swing arm to move along the guide groove. The cutter head can move along with the inner swing arm and tightly contact the surface of the electrode plate to strip the edges of the zinc sheet or the copper sheet on the surface of the electrode plate. The device has the beneficial effect that the edges of the zinc sheet or the copper sheet on the surface of the electrode plate can be stripped, and the edges of the zinc sheet or the copper sheet are convenient for the subsequent mechanical hand to grasp.

The utility model discloses a copper bar conveying device, belongs to the technical field of anode plate processing for wet electrolytic zinc, and solves the problems in the prior art that the labor intensity of manual carrying is high, the safety is insufficient, the placing position of a copper bar cannot be corrected, automatic production is not facilitated, and the working environment is poor. Comprising a conveying rack, two sets of conveying chains are arranged on the conveying rack, the front ends of the two sets of conveying chains are feeding ends, driven chain wheels at the rear ends of the two sets of conveying chains are connected through a synchronous rotating shaft, one driven chain wheel is connected with a driving chain wheel through a transmission chain, and the driving chain wheel is connected with a conveying motor; parallel return jacking air cylinders are arranged on the left side and the right side of the front portion of the conveying rack respectively, and a copper bar centering mechanism is arranged in the middle of the conveying rack and between the two sets of conveying chains. The copper bar conveying device is reasonable in design, compact in structure, low in labor intensity, good in safety, high in conveying efficiency, capable of correcting the placing position of a copper bar and capable of drying the surface of the pickled copper bar and improving the working environment.

The utility model discloses cathode plate polishing and glue spraying equipment, belongs to the technical field of cathode plate processing for wet electrolytic zinc, and solves the problems of low precision of polishing the surface of a cathode aluminum plate, poor uniformity of a glue brushing surface, low processing efficiency and high labor intensity in the conventional manual operation mode. Comprising a polishing and glue spraying rack on which an aluminum plate placing frame is arranged, an aluminum plate end jacking mechanism is arranged on the front side of the aluminum plate placing frame, and aluminum plate centering mechanisms are arranged on the left side and the right side of the aluminum plate placing frame; an aluminum plate containing frame is arranged on the base, an aluminum plate pressing mechanism is arranged above the aluminum plate containing frame, a polishing and glue spraying Y-direction moving cross beam is arranged above the aluminum plate pressing mechanism, a polishing and glue spraying X-direction moving base is arranged on the polishing and glue spraying Y-direction moving cross beam, and a polishing and glue spraying device is arranged on the polishing and glue spraying X-direction moving base. The device is reasonable in design, compact in structure, low in labor intensity, high in machining efficiency and high in practicability, can improve the grinding precision and ensure the uniformity of a gluing surface, saves cost, and is beneficial to construction of an automatic production line of products.

The utility model discloses a double -position electrolytic zinc production device relates to electrolytic zinc production and processing field, and its technical key points are: including operation platform, be provided with two parallel feeding assembly and unloading assembly on the operation platform, the left side of feeding assembly is equipped with the discharging device, is equipped with the carrying manipulator between the discharging device and unloading assembly, is equipped with the variable -pitch subassembly between the discharging device and feeding assembly, the utility model further promotes the production efficiency of device.

The invention relates to an electrolytic zinc load participation demand response capacity declaration method, equipment and a medium, and belongs to the technical field of intelligent power grids and power demand responding.The method comprises the following steps that production equipment including a crusher, a ball mill, a stirrer and an electrolytic bath is determined, and a power regulation and control cost model and constraint conditions of all the equipment are constructed; and calculating the demand response declaration capacity and the response capacity income of each device. And based on the power regulation and control cost and the response capacity income, constructing a load expected net income optimization model. And solving the model to obtain a capacity declaration value of the electrolytic zinc load participating in the demand response. According to the method, the energy management cost and the market response income of the production equipment are comprehensively considered, and the method aims at helping the electrolytic zinc enterprises to maximize the economic benefits and improving the demand response participation efficiency at the same time.

The utility model discloses a positioning and polishing platform, belongs to the technical field of processing of anode plates for wet electrolytic zinc, and solves the problems that the labor intensity is high, the operation efficiency is low, the applicability of an existing operation platform to the boundary dimension of a cross beam at different processing stages is poor, and a correction mechanism is lacked in the prior art. Comprising a platform bearing supporting frame with the upper portion provided with a cross beam containing platform, cross beam positioning clamping blocks are arranged at the two ends of the upper side of the cross beam containing platform respectively, cross beam clamping mechanisms are arranged on the rear sides of the cross beam positioning clamping blocks, and two sets of symmetrically-arranged lifting lug positioning clamping mechanisms are arranged between the cross beam positioning clamping blocks at the two ends; a discharging sliding groove is formed between the two lifting lug positioning and clamping mechanisms and in the front side of the middle of the cross beam containing platform, and a side positioning check block is arranged at one end of the cross beam containing platform. The device is reasonable in design, compact in structure, accurate in cross beam positioning, stable in clamping and fixing, capable of correcting the position of a cross beam lifting lug, convenient to operate, low in labor intensity, high in working efficiency and high in applicability.

The application belongs to the technical field of electrolytic zinc production equipment, and particularly relates to an electrolytic zinc stripping device and method. In the prior art, two surfaces cannot be stripped at one time, and the stripped zinc sheet is in a fragmentary shape. The present application provides the following scheme, which comprises a workbench, the top of the workbench is fixedly connected with a top plate through a supporting plate, a rectangular through hole is arranged in the workbench, a supporting plate is slidably arranged in the rectangular through hole, and the bottom of the workbench is fixedly connected with a placing rack. In the application, while the zinc sheet on the top and bottom of the cathode plate is stripped by the stripping blade, the guide block cooperates with the guide rod, the supporting plate cooperates with the wedge-shaped block, the knocking ball and the knocking block knock the top and bottom metal pins of the cathode plate, the zinc sheet cathode plate is loosened, the first high-pressure spray gun and the second high-pressure spray gun generate high-pressure water flow on the cathode plate, a gap is generated between the zinc sheet and the cathode plate, and the stripping blade can strip the zinc sheet from the cathode plate along the gap in the later stage.

The utility model provides an electrolytic bath diverter hoisting tool which comprises two hoisting beams, one ends of the two hoisting beams are hinged, the ends of the hoisting beams are provided with hoisting lugs, and hoisting rings are arranged on the hoisting beams on the back surfaces of the hoisting lugs; an opening and closing angle limiting device is arranged between the hoisting beams and is used for controlling the opening and closing angles of the hoisting beams, so that the stability of the hoisting process is ensured. The lifting device is simple in structure, safe, stable, uniform in stress, capable of effectively improving lifting safety, accuracy and adaptability of the shunt and reducing construction risks, and suitable for installation and maintenance of the shunt in the industries of electrolytic aluminum, electrolytic copper, electrolytic zinc and the like.

The invention discloses an electrolyzed water sterilization and disinfection device, and relates to the technical field of electrolyzed water, the electrolyzed water sterilization and disinfection device comprises an electrolysis shell, an electrode plate and a photocatalysis part, the electrolysis shell comprises a transparent cover embedded and fixed on the outer surface of the electrolysis shell, two brackets are symmetrically and fixedly connected to an inner cavity of the electrolysis shell, and rotating rods are rotatably connected to inner cavities of the brackets; by means of the synergistic effect of active oxygen species and zinc ions generated in the electrolysis process of the electrode plates, the sterilization effect is remarkably improved, the zinc ions have the long-acting antibacterial capacity, the active oxygen species can rapidly kill bacteria and viruses, a photocatalyst generates electrons and holes under visible light irradiation, and the photocatalytic activity of the photocatalyst is improved. The electrons and the holes can react with water and oxygen to generate active oxygen species with strong oxidizing property to decompose organic pollutants and kill bacteria, and efficient sterilization and purification effects are achieved by integrating three technologies of electrolysis, zinc ion release and photocatalysis.

The invention discloses a method for determining an organic additive in an ammonia chloride method electrolytic zinc solution, and relates to the technical field of ammonia chloride method electrolytic zinc solution determination, and the method comprises the following steps: preparing an organic additive standard solution A with a concentration of a; the method comprises the following steps: diluting a to-be-detected sample of an ammonia chloride process electrolytic zinc solution with water to n times of volume to obtain a diluted sample; respectively measuring the permanganate indexes of the standard solution A and the diluted sample by adopting a potassium permanganate oxidation-sodium oxalate reduction titration method; calculating a conversion coefficient; and calculating the concentration of the organic additive in the to-be-detected sample according to a formula. According to the method, the unknown additive can be measured, and the measurement precision and reliability are improved, so that accurate data support is provided for the production process.

This invention discloses a method for preparing a low-silver-doped lead-silver alloy anode material. The method includes first smelting a lead-silver master alloy, adding melted silver to molten lead, and using electromagnetic and mechanical stirring to ensure uniform alloy composition. During casting and solidification, ultrasonic external field strengthening technology is employed to produce the lead-silver master alloy. Then, the lead-silver master alloy and rare earth modifier are added to the molten lead, along with a dispersant and antioxidant. The metal smelting temperature is controlled between 380℃ and 520℃, and the smelting time is 0.5 h. Electromagnetic and mechanical stirring techniques are used to ensure uniform alloy composition distribution. After casting and solidification, a blank for producing lead-silver alloy anode plates is finally obtained. This method is applied to the production of anode plates for zinc electrowinning.

The invention discloses a method for repairing an oxide film on the surface of an aluminum cathode plate and improving unsmooth stripping of cathode zinc, which comprises the following steps: cleaning the surface of the aluminum cathode plate with unsmooth stripping of cathode zinc, and polishing and brushing the plate by a steel wire roller plate brushing machine; spraying and washing the two surfaces of the polar plate for 1-2 minutes by using an aqueous solution containing hydrogen peroxide with the volume percent of 20-30% or potassium permanganate with the mass percent of 10-20 g / L; taking out the polar plate, placing the polar plate on a polar plate rack, and aging for more than 10 hours under the conditions of normal temperature and normal pressure, or blowing with oxygen-enriched air for about 0.5-1 hour, so as to obtain a surface oxide film with the thickness of about 5 microns; and then the spring is used for electrolytic zinc production, so that the problem of cathode zinc stripping incapability is solved.

The invention relates to the technical field of electrolytic zinc production and industrial cooling, and discloses a device for rapidly and conveniently cleaning a high-temperature solution before electrolysis of electrolytic zinc and efficiently dissipating heat and cooling the high-temperature solution before electrolysis of the electrolytic zinc, the device comprises a tower body, a spraying device, an air blowing system and a composite internal part, and the bottom of the tower body is fixedly installed on the ground through a ground anchor; the height of the tower body is two meters higher than that of a traditional cooling tower. The height of the tower body is increased by two meters compared with that of a traditional cooling tower, and the gas-liquid contact space is increased; the spraying device adopts a fine hole spray head integrated design, a high-temperature solution before electrolysis is atomized into tiny liquid drops, the tiny liquid drops are in countercurrent full contact with cold air blown by an air blowing system (the air volume is 4.0 * 10 < 4 > m < 3 > / h and the air pressure is 242Pa), the liquid before 65-DEG C high-temperature electrolysis can be cooled to 35 DEG C in a short time, the cooling water volume reaches 26m < 3 > / h, and the continuous treatment requirement of annual production of 15,000 tons of electrolytic zinc is met; the air blowing system and the spraying device are in linkage operation, the air volume is accurately matched with the spraying volume, the heat dissipation efficiency is improved by 40% compared with a traditional device, and the cooling time is greatly shortened.

The invention discloses an automatic control system and method for efficient cobalt removal in zinc hydrometallurgy, and belongs to the technical field of hydrometallurgy. The system comprises an embedded online detection module, a process decision server and a distributed execution mechanism group, and the embedded online detection module is deployed on an outlet pipeline of a purification reaction tank and comprises a multispectral analysis unit and an electrochemical sensing unit; the process decision server receives the detection data flow through the industrial Ethernet, and operates a dynamic optimization model based on machine learning; the distributed execution mechanism set comprises a zinc powder constant feeder, a solution circulating pump and a temperature adjusting device and is connected with the DCS through an OPC protocol. According to the method, the zinc powder consumption can be remarkably reduced, the electrolytic zinc quality is improved, and the method is suitable for full-process automatic accurate removal of cobalt in a large-scale zinc hydrometallurgy production scene.

The present invention discloses a device for recycling and processing used cathode plates in zinc electrolysis. The device comprises a base and a conveyor. The conveyor is mounted on both sides of the base, and the conveyor further comprises a left conveyor belt and a right conveyor belt. The base is also provided with a cutting device, a cleaning device, a shaping device, and a slot milling device. The device can cut and remove corroded portions of the used cathode plates using a semi-automatic work platform, and then re-slot the conductive crossbeam after cleaning, and finally weld the two together. This device integrates the five processes of shearing, cleaning, shaping, slot milling, and welding the used cathode plates onto a single work platform, enabling convenient and rapid recycling of the used cathode plates, reducing the labor required in subsequent electrolysis processes, and shortening the processing time of the used cathode plates.

The invention discloses a method for determining chloride ions in an ammonia chloride process electrolytic zinc solution, and relates to the technical field of determination methods, and the method comprises the following steps: preparing a subacid sample solution; adding a quantitative silver nitrate standard solution; heating to a slight boiling state for 1-2 minutes, and cooling to room temperature; adding an indicator; titrating excessive silver nitrate with the ammonium thiocyanate standard solution, determining a titration end point according to the change of the indicator, and recording the consumption volume of the ammonium thiocyanate standard solution; carrying out a blank experiment, and recording the consumption volume of the ammonium thiocyanate standard solution; and calculating the concentration of chloride ions in the chlorine-containing solution according to a titration result. According to the method, a quantitative silver nitrate standard solution is added into a subacid sample solution, chloride ions become silver chloride precipitates, an indicator is added, and excessive silver nitrate is titrated with an ammonium thiocyanate standard solution, so that the concentration of the chloride ions in the electrolytic zinc solution can be accurately and quickly measured, the detection speed is increased, and the detection accuracy is improved. And errors caused in the dilution process of the spectrophotometric method are reduced.

The invention belongs to the technical field of electrochemical anode preparation, and particularly relates to a preparation method and application of a high-energy-efficiency titanium-based lead dioxide anode, and the preparation method comprises the following steps: pretreating a titanium plate, preparing a tin-antimony solution, coating and sintering the titanium plate to prepare a tin-antimony oxide intermediate layer, and electrodepositing and plating lead to obtain the high-energy-efficiency titanium-based lead dioxide anode. According to the method, the electrochemical performance and catalytic activity of the titanium-based lead dioxide anode can be improved, and the zinc electrodeposition power consumption of the titanium-based lead dioxide anode is reduced when the method is applied to the field of zinc electrodeposition.