37 results about "Zinc electrowinning" patented technology

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 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 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 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 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 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 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.

This invention discloses a method for improving the electrochemical performance of lead alloy anodes using rare earth elements. The method includes first melting a rare earth alloy in a vacuum furnace, adding lanthanum (La), cerium (Ce), and neodymium (Nd) while using electromagnetic stirring, controlling the temperature at 850℃~1030℃ for 0.5-1 h. Next, the rare earth alloy concentration is diluted ≤10 times, and dispersants and antioxidants are added. Mechanical stirring combined with electromagnetic stirring is used to ensure uniform elemental composition, controlling the temperature at 500℃~550℃ for 0.5 h to prepare a rare earth master alloy. Then, 5% of the rare earth master alloy, 1% of a lead-calcium alloy, and 1% of a lead-strontium alloy are sequentially added to the molten lead, along with an antioxidant. Mechanical stirring combined with electromagnetic stirring is used to ensure uniform microstructure and composition, controlling the temperature at 450℃~500℃ for 0.5 h to finally obtain a rare earth lead alloy. This method can be applied to the production of anode plates for zinc electrowinning.

The application discloses a high-purity zinc powder preparation process and relates to the technical field of metal powder preparation. The high-purity zinc powder preparation process comprises the following steps: S1, raw material pretreatment: selecting industrial electrolytic zinc ingots with a purity of greater than or equal to 99.95%, crushing the zinc ingots into zinc particles with a size of 10-50 mm, removing the surface oxide scale and oil stains, removing ferromagnetic impurities through magnetic separation, and obtaining pretreated zinc raw materials. When the high-purity zinc vapor is condensed, multiple condensation modules are arranged, the rotating column and the condensation modules are driven to rotate by a driving mechanism, and the rotating column and the condensation modules are rotated in turn. In this way, the zinc vapor in the multiple condensation modules can be sequentially condensed and powdered, the powder can be discharged during the rotating and replacing process, continuous condensation and powdering operation can be realized without interrupting the production process, the quality of the powder can be prevented from being affected when a large amount of steam is introduced at one time, the condensation efficiency and quality can be improved, and the preparation efficiency and quality of the high-purity zinc powder can be improved.

The invention discloses a carbon fiber loaded titanium-based positive electrode plate, a preparation method and a zinc electrodeposition method applying the carbon fiber loaded titanium-based positive electrode plate. The problem that energy consumption is high in the current zinc electrodeposition process is mainly solved. The device is characterized by comprising a substrate material which is made of a titanium plate or a titanium mesh or titanium alloy; pretreating a substrate material, and treating the substrate material in a high-temperature oxalic acid solution; preparing a catalytic active substance layer, wherein a catalytic active substance of the catalytic active substance layer is prepared from carbon fibers modified by one of monatomic iron, cobalt and nickel; the preparation method comprises the following steps: preparing slurry by taking a catalytic active substance as a main body, polyvinylidene fluoride as a binder and N-N-dimethylformamide as a solvent, mechanically smearing and covering the surface of a base material, and drying at high temperature. Feeding the electrolyte into an electrolytic bath, and separating a negative chamber from a positive chamber by a zinc ion selective transmission diaphragm; and adding a reaction auxiliary agent on the anode side for electrodeposition. The invention provides a carbon fiber loaded titanium-based positive electrode plate and a preparation method thereof. The carbon fiber loaded titanium-based positive electrode plate and the preparation method thereof have the main advantages that (1) the energy efficiency is improved and the energy consumption is reduced; (2) the catalytic activity and corrosion resistance of the anode are improved; and (3) the lead-zinc pollution is reduced, and the environment is protected.

This invention provides a corrosion simulation method for aluminum cathode plates used in zinc electrowinning, comprising: step S1, preparing a simulation electrolyte, wherein the concentration of H2SO4 in the simulation electrolyte is 180 g / L to 300 g / L, and Cl... ‑ The concentration is 400 mg / L~1000 mg / L; Step S2, using an aluminum cathode plate as the cathode, and with a current of 400 A / m 2 ~750A / m 2 The working current is subjected to constant current polarization treatment for 1 to 8 hours, after which the current is disconnected and the plate is left to stand. Step S3 is repeated 6 to 10 times from step S2 until the aluminum cathode plate fails. This invention is based on a high-acid, high-chlorine simulated electrolyte system and controls the cathode reaction kinetics through constant current polarization; and simulates zinc deposition-stripping conditions through periodic energization-open circuit cycles, thereby achieving the technical effect of rapid, repeatable, and multi-dimensional evaluation of the corrosion resistance and service life of aluminum cathode plates.

The invention relates to the technical field of optical testing, in particular to a spectral determination method, system and equipment for chemical industrial wastewater. The method comprises the following steps: acquiring a spectral curve of electrolytic zinc wastewater; according to the shape of the spectrum curve in the wave crest section, the metal performance degree is obtained, and then a metal wave crest section is screened out; obtaining the zinc interference degree of the metal wave crest section according to the distribution condition of the spectral intensity in the metal wave crest section and the distance between the metal wave crest section and the wave crest section corresponding to the zinc element; and correcting the metal performance degree of the metal wave crest section according to the zinc interference degree to obtain the corrected metal performance degree, thereby obtaining the real concentration of each metal component in the electrolytic zinc wastewater. According to the invention, the interference of the spectral signal corresponding to the zinc element in the electrolytic zinc wastewater on the spectral signals corresponding to other metal elements is effectively reduced by acquiring the performance degree of the corrected metal, so that the real concentration of each metal component is accurately acquired, and whether the electrolytic zinc wastewater reaches the discharge standard is accurately judged.

The invention discloses a thallium removal method for a zinc hydrometallurgy system, which comprises the following steps: 1) in a neutral leaching supernatant purification process, adding potassium permanganate and ferrous sulfate in a first purification stage of a liquid purification process, and reacting for 1-2 hours; 2) adding zinc powder into the solution, adding activated carbon, and reacting for 1-2 hours; 3) adding lead acetate, and reacting for 1-2 hours; and 4) carrying out solid-liquid separation through a plate filter press, and removing purified residues. A combined thallium removal mode is adopted, so that the thallium content of the purified solution is low, the requirement of electrolytic zinc can be met, and electrolytic'plate burning 'caused by thallium is avoided; according to the thallium removal method for the zinc hydrometallurgy system, additional reaction time does not need to be increased, the thallium removal method can be synchronously carried out with the original neutral leaching supernatant liquid purification process, the production period is not prolonged, additional equipment investment is not increased, the cost is low, and the effect is good.

The utility model relates to the technical field of electrolytic zinc production, and discloses an anti-clogging waste liquid filtering device for electrolytic zinc production, which comprises a supporting seat and a filtering barrel, the top of the filtering barrel is fixedly connected with a sealing cover, the bottom of the filtering barrel is communicated with a discharging pipe, the bottom end of the discharging pipe is communicated with a filtering box, and the filtering box is connected with the supporting seat. Fixing blocks are fixedly connected to the periphery of the inner wall of the filter box, connecting rods are slidably connected to the inner walls of the multiple fixing blocks, springs are fixedly connected to the outer walls of the multiple connecting rods, filter plates are fixedly connected to the top ends of the multiple connecting rods, and an air cylinder is fixedly connected to the rear side of the filter box. According to the utility model, discharged wastewater is filtered through the filter plate, and when heavy metals attached to the surface of the filter plate reach a certain quantity, the push plate is driven by starting the air cylinder to scrape the heavy metals attached to the surface, so that the condition that the filter structure is blocked is avoided.

The present application relates to the technical field of optical testing, in particular to a spectrum determination method, system and equipment for chemical production wastewater. The method obtains a spectrum curve of electrolytic zinc wastewater; according to the shape of the spectrum curve in the wave peak segment, the metal appearance degree is obtained and the metal wave peak segment is screened out; according to the distribution of the spectrum intensity in the metal wave peak segment and the distance between the metal wave peak segment and the zinc element corresponding wave peak segment, the zinc interference degree of the metal wave peak segment is obtained; according to the zinc interference degree, the metal appearance degree of the metal wave peak segment is corrected to obtain the corrected metal appearance degree, and the real concentration of each metal component in the electrolytic zinc wastewater is obtained. By obtaining the corrected metal appearance degree, the present application effectively reduces the interference of the spectrum signal corresponding to the zinc element in the electrolytic zinc wastewater on the spectrum signal corresponding to other metal elements, and then accurately obtains the real concentration of each metal component and accurately judges whether the electrolytic zinc wastewater meets the discharge standard.

The utility model discloses a novel wet electrolytic zinc anode plate insulation clamping edge strip, which relates to the technical field of wet metallurgy, and comprises two side edge strips, a plurality of connecting strips are fixedly connected between the two side edge strips, a plurality of mounting lugs are fixedly connected on the opposite sides of the two side edge strips, reinforcing strips are fixedly connected between the inner sides of the mounting lugs and the side edges, and the connecting strips are fixedly connected with the reinforcing strips. Two of the plurality of mounting lugs are respectively fixed at the lower ends of the outer sides of the two side strips; the two side edge strips are hollowed out, the interiors of the mounting lugs are hollowed out, the problem that the liquidity of liquid on the side wall of an electrolytic cell is poor can be solved, the strength of the anode insulation clamping edge strip can be structurally enhanced by arranging the connecting strips and the reinforcing strips, and the mounting lugs are additionally arranged at the lower ends of the clamping edge strips, so that when a cathode is inclined or upwarped, the anode insulation clamping edge strip can be prevented from being damaged, and the service life of the anode insulation clamping edge strip is prolonged. And the bottom cathode plate and the anode plate can still be in a mutually isolated state.

The invention discloses a high-purity zinc powder preparation process, and relates to the technical field of metal powder preparation. The high-purity zinc powder preparation technology comprises the following steps that S1, raw material pretreatment is conducted, specifically, industrial electrolytic zinc ingots with the purity larger than or equal to 99.95% are selected, zinc particles with the purity larger than or equal to 99.95% are crushed into 10-50 mm, ferromagnetic impurities are removed through magnetic separation after surface oxide skin removal and oil stain cleaning are conducted, and pretreated zinc raw materials are obtained; according to the high-purity zinc powder preparation process, when high-purity zinc steam is condensed, a plurality of condensation modules are arranged, a rotating column and the condensation modules can be driven by a driving mechanism to rotate and alternate, and the process is repeated, so that the zinc steam can be sequentially supplied into the condensation modules for condensation powder preparation, and powder can be discharged in the rotation and alternate process; according to the method, continuous condensation powder making operation is achieved, the production process does not need to be interrupted, the situation that the powder making quality is affected when a large amount of steam is introduced at a time can be avoided, and therefore the condensation efficiency and quality can be improved, and the high-purity zinc powder preparation efficiency and quality are improved.

The utility model discloses a novel insulating table device between wet electrolytic zinc tanks, which relates to the technical field of wet zinc smelting and comprises an insulating table and two cathode and anode plate insulating support tables, each cathode and anode plate insulating support table comprises a plurality of cathode supports and a plurality of anode supports, inclined planes are arranged on the upper surfaces of the anode supports on the front side, and the inclined planes are arranged on the upper surfaces of the anode supports on the rear side. The bottom of the insulating table is movably connected with a liquid receiving disc, and a plurality of drain holes are formed in the bottom of the liquid receiving disc; according to the utility model, the cathode support, the anode support and the anode plate cross beam are arranged in a concave-convex staggered manner, and the placement surface at one side of the conductive head has an inclination angle, so that the conductive head can be horizontally placed on the surface of a copper bar between grooves after the cathode and anode plates are mounted in the grooves, local and line contact phenomena are avoided, and the short circuit phenomenon of adjacent conductive heads is avoided; and by arranging the groove and the liquid receiving disc, the electrolyte flows to the drainage hole through the liquid guide groove and the liquid receiving disc to be discharged, so that crystals cannot be formed on the outer wall of the electrolytic cell, and the electric leakage condition is avoided.

The utility model relates to the technical field of electrolysis auxiliary equipment, in particular to a zinc stripping frame for electrolyzing zinc, which comprises a frame body and an auxiliary mechanism, the frame body comprises cross beams and longitudinal beams, a plurality of J-shaped lifting hooks are arranged at the lower ends of the longitudinal beams, a plurality of reinforcing beams are arranged between the longitudinal beams, the auxiliary mechanism comprises a clamping assembly and a driving assembly, the clamping assembly comprises a first rotating rod and a second rotating rod, the first rotating rod and the second rotating rod are rotationally installed on the reinforcing beams, and clamping plates are arranged at the lower ends of the first rotating rod and the second rotating rod; a sliding sleeve is arranged at the upper end; the driving assembly comprises lifting rods, second hydraulic telescopic rods and lifting plates, the second hydraulic telescopic rods are arranged on the cross beam, the lifting plates are arranged on the second hydraulic telescopic rods, and the lifting rods are arranged between the lifting plates and are in sliding connection with the sliding sleeves; the driving assembly drives the first rotating rod and the second rotating rod to rotate, so that the clamping plates at the lower ends of the first rotating rod and the second rotating rod get close to each other to clamp the electrolytic cathode plate, and the electrolytic cathode plate does not shake any more during transferring and zinc stripping.

The invention discloses preparation and application of a foam inhibitor in a zinc electrolysis process. The inhibitor is composed of a fluoroalkyl compound, gelatin, an emulsifier and deionized water according to a specific weight percentage. The preparation method comprises the following steps: firstly, swelling the gelatin in cold water, and then heating and dissolving to prepare a stock solution; performing high-speed shearing and mixing on a fluoroalkyl compound and an emulsifier to form an oil phase; and then adding the oil phase into the gelatin solution, carrying out high-pressure homogenization treatment, and finally diluting and aging to obtain a finished product. When the product is applied to a zinc electrolysis process, a stable and compact foam covering layer can be formed on the surface of an electrolyte, the surface tension is remarkably reduced, bubbles are slowly broken, the generation of sulfuric acid mist is inhibited from the source, the acid mist inhibition efficiency reaches 80% or above, meanwhile, steam consumption is reduced, the cathode zinc deposition quality is improved, and high efficiency, environmental protection and economic benefits are achieved.

The utility model discloses a transmission unit sealing structure used in a zinc electrolysis process, and aims to improve the sealing performance, reduce the energy consumption and enhance the production stability. The structure comprises a sealing sleeve composed of two half cylinders, an elastic sealing ring and a floating pressing ring which are arranged in the sealing sleeve, and a temperature sensor. By optimizing the sealing design and the cooling medium, liquid leakage and heat loss are effectively reduced, the service life of equipment is prolonged, and real-time monitoring and adjustment of the temperature are achieved. Compared with the prior art, the sealing device has the remarkable advantages in the aspects of improving the sealing effect, reducing the energy consumption and improving the production efficiency and environmental protection benefits, is suitable for the zinc hydrometallurgy industry and has wide application prospects.

The invention relates to the field of plasma spraying or zinc electrolysis, in particular to an anode alloy plate for electrolysis. By doping RuO2 into the PbO2 coating, the oxygen evolution potential of the PbO2 coating can be remarkably reduced, and the catalytic activity of the PbO2 coating is further improved. Researches show that along with the increase of the content of RuO2, the catalytic activity of the catalytic anti-corrosion coating is continuously improved, but the corrosion rate of the catalytic anti-corrosion coating is also improved due to excessive RuO2, so that the service life of the anode plate is not prolonged, and therefore, the proportion of RuO2 in the catalytic anti-corrosion coating needs to be controlled to be 5.2-12.1 wt%. In addition, NiCrAlY containing rare earth elements is selected as a bonding layer between the substrate and the catalytic anti-corrosion coating, the bonding strength of the substrate and the catalytic anti-corrosion coating can be remarkably improved, and the service life of the anode alloy plate is prolonged.

The application discloses a method for preparing zinc sulfate electrolyte from zinc-containing electric furnace dust, and belongs to the field of hydrometallurgy. The method uses zinc-containing electric furnace dust as raw material, and performs pre-roasting-acid leaching treatment by adding roasting aid ferrous sulfide (FeS). The steps are as follows: the zinc-containing electric furnace dust is uniformly mixed with FeS according to a certain mass ratio, and then roasted at a certain temperature for a certain time; the roasted product is added into appropriate dilute sulfuric acid for leaching, and then separated into solid and liquid through magnetic stirring and suction filtration to obtain zinc sulfate solution and iron-containing leaching residue. The generated zinc sulfate solution can be used as electrolyte for electrolytic zinc, and can be directly sent to an electrolytic zinc plant for electrodeposition to prepare metal zinc; the iron-containing leaching residue can be returned to an iron smelting plant for iron smelting process. The application ingeniously uses FeS to pre-sulfate Zn in the form of ZnO and ZnFe2O4 in the zinc-containing electric furnace dust into zinc sulfate, and then completely converts it into zinc sulfate through dilute sulfuric acid leaching, so that zinc in the zinc-containing electric furnace dust is simply and efficiently extracted. The leaching rate of zinc is as high as 95.33%, and the leaching rate of iron is only 0.17%, so that most of the iron remains in the leaching residue, and the iron removal step before zinc electrodeposition can be avoided. The application can realize zinc extraction and iron separation from the zinc-containing electric furnace dust through the pre-roasting-acid leaching process, realize resource recycling of zinc and iron, realize full utilization and resource utilization of the zinc-containing electric furnace dust, and is a new method for efficiently disposing the zinc-containing electric furnace dust.

The application discloses a kind of wet metallurgy zinc electrodeposition cathode plate anticorrosion method, it is related to cathode plate anticorrosion technical field.The present application includes the following steps: first using abrasive equipment to the two sides and liquid level of cathode plate are automatically roughened and treated;Subsequently using surface cleaning agent to the surface of cathode plate is cleaned and treated;Then using diluent, ZL263 (A+B) colloidal is coated to cathode plate twice;After that, high molecular anticorrosion material is applied on the colloidal;Subsequently using fixed horizontal tool to cathode plate is fixed and shaped.The present application can make that high molecular anticorrosion material and cathode plate adhere more stably by using abrasive equipment to the two sides and liquid level of cathode plate are automatically roughened and treated, by fixed horizontal tool, the cathode plate to which high molecular anticorrosion material is applied can be fixed and shaped, so that high molecular anticorrosion material and cathode plate are more closely attached, and the anticorrosion performance is improved.

The application discloses modified kaolinite, a preparation method thereof and application of the modified kaolinite in fluoride removal. The modified kaolinite is obtained by mixing and calcining kaolinite after carboxyl treatment. The modified kaolinite can be added into a strong-acid fluorine-containing sulfate solution for adsorption, and the modified kaolinite can preferentially act on fluoride in the solution and weakly act on sulfate ions, so that selective removal of the fluoride is realized. The modified kaolinite is suitable for removal of the fluoride in a strong-acid sulfate system such as electrolytic zinc, and has the characteristics of simple process and strong adaptability.