64 results about "Metallic Lead" patented technology

A purification method for purification and impurity removal of metal rubidium and cesium performs purification and impurity removal treatment on metal rubidium and cesium through external introduction of elements, and specifically comprises the following process steps and conditions: (1) firstly, putting metal lead particles into a porous and liftable stainless steel mesh; secondly, transferring a penicillin bottle in which the primary metal rubidium / cesium liquid is sealed in a vacuum manner into a glove box protected by argon, opening a penicillin bottle cap to transfer the primary metal rubidium / cesium liquid into a reaction tank, and then putting the reaction tank and a stainless steel mesh into a well type resistance vacuum furnace together to finish charging operation; and (2) heating the reaction tank after the charging operation by using a resistance heater, raising the temperature of the furnace to 50-320 DEG C, keeping the temperature for 2-10 hours, and then carrying out solid-liquid separation to obtain the high-purity metal rubidium / cesium, so that Li / Na impurities can be effectively removed, a high-purity metal rubidium / cesium product is prepared, and the production cost is reduced. And the method has the advantages of short process flow, low energy consumption, low reaction temperature, simplicity and convenience in equipment operation, lower manufacturing cost, variable specification, investment saving, environmental pollution reduction, raw material cost reduction and the like.

The invention discloses a method for separating valuable metal in a waste photovoltaic welding strip through reduction smelting-vacuum gasification-vulcanization, and belongs to the technical field of resource recycling. The method comprises the steps that the waste photovoltaic welding strip is placed in a reducing atmosphere and heated for reduction smelting, so that carbon impurities on the surface of the waste photovoltaic welding strip are removed, tin, lead, silver and copper oxides on the surface are reduced, and a copper-tin-lead-silver alloy is obtained; then, heating the decarbonized and deoxidized photovoltaic welding strip under a vacuum condition, and carrying out vacuum gasification separation to obtain condensed metal lead and a copper-tin-silver alloy; and finally, sulfur is added into the copper-tin-silver alloy for vacuum vulcanization-separation, and volatile matter stannous sulfide and residual copper-silver alloy are obtained. According to the method, valuable metals in the waste photovoltaic solder strip can be efficiently separated, and the method has the advantages of being green and economical.

The invention relates to a method for preparing high-purity bismuth by removing impurity lead in refined bismuth through oxidation slagging, and belongs to the technical field of non-ferrous metals. Melting and oxidizing: melting a lead-containing refined bismuth raw material at 300-400 DEG C, adding bismuth oxide into the molten bismuth, and fully stirring to enable the bismuth oxide and lead to generate oxidation reaction to generate lead oxide; slagging reaction: adding boric anhydride (B2O3) into the melt, and enabling the boric anhydride (B2O3) to react with the generated lead oxide to generate lead borate slag; slag salvaging and lead removal: stirring for 30-60 minutes at the temperature of 300-400 DEG C in a heat preservation manner, so that the slagging reaction is fully carried out, generated lead borate slag with lower density floats to the surface of a melt, and a lead-containing slag phase is removed in a mechanical or manual slag salvaging manner; and after the slag salvaging process is finished, cooling the bismuth melt under a protective atmosphere until the bismuth melt is solidified to obtain a lead-removed high-purity bismuth product. According to the method, bismuth oxide and boric anhydride are introduced, metal lead is converted into lead borate slag easy to float, efficient and deep separation of lead and bismuth melt is achieved through the density difference, and the lead content can be reduced to 1 ppm or below.

The invention relates to the technical field of photovoltaics, in particular to a method for recovering metal lead in a perovskite component, which comprises the following steps: crushing the perovskite component to be recovered into a size of 2-3cm, soaking in a recovery solution, fully stirring and filtering to obtain a first filtrate; standing the first filtrate, and separating to obtain a second filtrate; adding alkali liquor into the second filtrate until lead ions in the second filtrate are completely precipitated, and filtering to obtain lead hydroxide precipitate and third filtrate; adding a silver nitrate solution into the third filtrate, and filtering to obtain a silver halide precipitate; and washing the obtained lead hydroxide precipitate with deionized water to be neutral, completely dissolving the lead hydroxide precipitate with an acid solution to obtain a high-purity lead-containing solution, carrying out halogen replacement with potassium iodide to obtain a lead iodide precipitate, filtering and drying the lead iodide precipitate, and reusing the lead iodide precipitate for preparing a perovskite solution. According to the method, the use of a large amount of organic solvent is reduced, the method is more environment-friendly, the health of workers is not harmed, the recycled lead iodide is reused for preparing the perovskite solution, and the method has higher economic value.

The invention relates to a method for recycling lead by treating lead plaster of a waste lead-acid storage battery, and belongs to the technical field of lead secondary resource recycling. The method comprises the following steps: (1) slurrying lead paste with water to obtain slurry; adding sodium carbonate and sodium sulfite into the slurry, heating and then carrying out reduction-conversion reaction under a certain temperature condition to obtain a reaction mixture containing a lead-containing solid and a liquid phase; (2) carrying out solid-liquid separation on the reaction mixture obtained in the step (1) under the condition that the temperature is not lower than 40 DEG C to obtain a lead-containing solid; (3) drying the lead-containing solid obtained in the step (2) to obtain a dried lead-containing material; and (4) the dried lead-containing material obtained in the step (3) is subjected to high-temperature reduction smelting, and metal lead is obtained. According to the method, a wet process and a pyrogenic process are adopted, the used raw materials such as sodium carbonate, sodium sulfite and pea coal are cheap and easy to obtain, the whole technological process is short, operation is easy, the lead recovery rate is high, and industrial large-scale application and popularization are facilitated.

The application belongs to the technical field of ion batteries, and particularly relates to a lead-carbon composite material and a preparation method and application thereof. The preparation method comprises the following steps: grinding and tabletting a lead source and a carbon source, and roasting the tabletted tablet to obtain the lead-carbon composite material; the lead source comprises at least one of lead citrate, lead acetate, lead chloride and lead oxalate; and the carbon source comprises at least one of polyvinylpyrrolidone, carboxymethyl cellulose, glucose and sucrose. The lead-carbon composite material has a three-dimensional porous structure formed by metal lead particles embedded in a carbon skeleton, and the carbon skeleton can effectively alleviate the volume expansion generated in the alloying process of metal lead and metal sodium in the charging and discharging process, so as to improve the conductivity and electrochemical performance of the material.

The invention discloses a lead-zinc slag recycling device and method, and relates to the technical field of slag recycling. The device comprises a pretreatment system for crushing and screening lead-zinc slag; the physical sorting unit is used for sorting the lead-zinc slag; the chemical leaching unit is used for leaching the lead-zinc slag to obtain a lead-zinc leaching solution; the metal extraction unit is used for performing metal extraction on the leachate to obtain metal lead and zinc and waste slag liquid; the waste treatment unit is used for detecting and treating harmful substances in the waste slag liquid; and the intelligent control unit is used for carrying out optimization analysis on the recovery process by utilizing artificial intelligence and automatically adjusting an optimal recovery processing scheme. Advanced physical separation, chemical leaching, metallurgical refining and waste treatment technologies are comprehensively applied, and efficient automatic control means are matched, so that the recovery efficiency of lead-zinc slag treatment is remarkably improved, the more efficient recovery treatment effect is achieved, resource waste is reduced, environmental pollution is reduced, and the environment-friendly and green production targets are achieved.

Provided herein is a composition comprising one or more of alpha lead oxide, beta lead oxide, metallic lead, Pb2O3, and Pb3O4, the composition comprising particles comprising sub-particles, the sub-particles having an average maximum size of from 10 to 300 nm. Also described herein are methods of making such compositions.

The invention discloses a high-temperature-resistant maintenance-free lead-acid storage battery for starting. The lead-acid storage battery comprises a positive plate, a negative plate, a partition plate, electrolyte and a storage battery tank, the positive plate comprises a positive grid filled with positive lead plaster; the negative plate comprises a negative plate grid filled with negative lead plaster; the negative electrode lead paste is prepared by curing lead powder, a condensation polymer of beta-naphthol sulfonic acid and formaldehyde, lignin, barium sulfate, acetylene black, short fibers, a sulfuric acid aqueous solution and deionized water according to a ratio. The condensation polymer of beta-naphthol sulfonic acid and formaldehyde added in the negative electrode lead paste has low solubility in an electrolyte and strong oxidation resistance, reduces the volume of lead sulfate crystals generated by discharge, increases the porosity of a negative electrode active substance, inhibits the formation of large-particle metal lead in the charging process, delays the shrinkage of the negative electrode active substance, and improves the charging efficiency. Meanwhile, the hydrogen evolution overpotential is improved, and the water loss of the storage battery is inhibited.

Disclosed in the present invention are a skeleton type inert lead-based rare-earth anode plate and a preparation method therefor. In the present invention, a die casting technique is used as a preparation technique. After lead metal is heated and melted, alloying elements are added to the resulting lead liquid; after alloying is completed, refining and slagging are performed, the temperature is maintained, and a copper bar is subjected to de-oiling, acid pickling, cleaning, drying and then tinning; then a metal net and the tinned copper bar are placed in a die-casting die, and the die is then closed; and a lead alloy liquid is pressed into the die by means of a high-pressure casting process, the copper bar and the metal net are coated with the lead alloy liquid, and after the lead alloy is solidified, a skeleton type lead-based rare-earth anode plate can be obtained. The anode plate prepared by the present invention has high plate surface strength, is not prone to deformation during use, has high production efficiency and long service life, and can effectively improve the production indexes of zinc electrodeposition.

The invention relates to a stannous fluoride-free tin-lead perovskite solar cell and a preparation method thereof, a surface passivator is introduced into a perovskite layer of the tin-lead perovskite solar cell, and the surface passivator is one or more of lead fluoride, lead bromide, lead chloride, lead oxalate and other metal lead salts. The surface passivation strategy is applied to the tin-lead perovskite solar cell, so that the dependence of the high-efficiency tin-lead perovskite solar cell on a stannous fluoride additive can be avoided, the perovskite deprotonation reaction caused by stannous fluoride is inhibited, and the photo-thermal stability of the tin-lead perovskite solar cell is further effectively improved.

The invention discloses a method for recycling lead from waste lead-acid storage battery lead plaster through electrolysis, and belongs to the technical field of solid waste treatment and recycling. The method for recycling lead through electrolysis of the waste lead-acid storage battery lead plaster comprises the following steps that the waste lead-acid storage battery lead plaster, an additional lead source containing metal lead and an acetate solution are mixed and leached, a lead acetate leaching solution is obtained, then the lead acetate leaching solution serves as an electrolyte for electrolysis, and a metal lead product is obtained. According to the method, the lead-containing electrolyte can be obtained through one-step leaching, and the electrolyte is neutral, so that the corrosion of strong acid and strong alkali is avoided. According to the technical method provided by the invention, the metal lead with high purity and low impurity content can be obtained. In the electrolysis step, the electrolysis energy consumption is not higher than 600 kwh / t lead, the current efficiency is higher than 97%, and the lead recovery rate reaches 99% or above.

The present invention relates to a method for respectively recovering silver, silicon and aluminum from discarded photovoltaic silicon cells, and belongs to the technical field of secondary resource recovery. The present invention mechanically crushes and grinds discarded photovoltaic silicon cells to obtain discarded photovoltaic silicon cell powder; uniformly mixes collector metal lead and discarded photovoltaic silicon cell powder to obtain a mixed material, heats the mixed material under an argon atmosphere, and performs lead capture of silver under stirring conditions, and solid-liquid separation to obtain a silver-containing lead liquid and a solid-phase silicon-aluminum mixture; the silver-containing lead liquid is heated under vacuum conditions, and vacuum distillation is performed to separate lead and silver to obtain metallic silver and metallic lead, and the metallic lead is returned as a collector; the solid-phase silicon-aluminum mixture is electrostatically separated to separate silicon and aluminum to obtain silicon and metallic aluminum. The present invention can realize the separate recovery of valuable metal silver, silicon and aluminum in discarded photovoltaic cells, and the lead used as a collector can be recycled, and has the characteristics of cleanliness, high efficiency, and short process.

The invention relates to the technical field of solar cells, in particular to a high-purity lead iodide synthesis method which comprises the following steps: S1, preparing a lead salt solution; s2, filtering to obtain a primary lead salt solution; s3, diluting the primary lead salt solution to 0.015-0.15 mol / L, carrying out activated carbon adsorption and ion exchange resin purification, carrying out reduced pressure evaporation, and washing to obtain a high-purity lead salt crystal; s4, dropwise adding the high-purity lead salt solution into the iodized salt solution for precipitation reaction, and filtering after aging; and S5, dispersing the precipitate in a first solvent, washing, and filtering to obtain the high-purity lead iodide. The invention relates to a high-purity lead iodide synthesis method, which comprises the following steps: applying a low-cost auxiliary solvent to a lead dissolution reaction, carrying out precipitation reaction on a lead salt solution, carrying out preliminary impurity removal treatment, carrying out resin adsorption and other combined processes, reducing the content of impurity elements in high-quality metal lead, and preparing high-purity lead iodide; the combined process is easy and convenient to operate, the used reagents are wide in source and low in cost, the final product is high in purity, operation conditions are mild, and the combined process is suitable for the requirement of large-scale process production.

The invention discloses a method for detecting lead plaster components of a waste lead-acid storage battery. The invention relates to the technical field of waste storage battery resourceful treatment and detection, the method comprises preparation and calibration of an EDTA standard solution, and continuous determination of the content of lead oxide, lead sulfate, metal lead and lead dioxide in lead plaster, through use of formic acid, ammonium carbonate and other reagents and combination of an ultrasonic-assisted extraction technology, the dissolution efficiency is significantly improved, and the content of lead oxide, lead sulfate, metal lead and lead dioxide in the lead plaster is determined. The reaction time is greatly shortened; the selective dissolution of the metal lead is realized by accurately controlling the low-temperature condition and the reaction time, and the interference of lead dioxide is effectively avoided; according to the method, by optimizing a reagent system and introducing ultrasonic-assisted extraction, the dosage of strong acid and the emission of toxic wastes are greatly reduced, the method is more environment-friendly while the result accuracy is ensured, and the method is clear in operation flow, good in reproducibility and suitable for rapid and reliable determination of the components of the lead paste in an industrial recovery scene.

The invention relates to the technical field of copper-based materials, in particular to a high-wear-resistance copper worm gear and a preparation method thereof. The worm gear is made of a copper worm gear base material through surface treatment. The copper worm wheel base material is obtained by mixing an electrolytic copper plate, metallic tin, metallic lead, nano graphite powder, molybdenum disulfide powder and iron powder and then conducting smelting, centrifugal casting and rolling strengthening. A three-time sulfurizing process is adopted for surface treatment, and a CrAlN bottom coating, a CrAlN middle coating and a CrAlN surface coating are deposited in combination with magnetron sputtering. The sulfide gradient transition layer is formed through multi-stage sulfurizing, the interface bonding force and stress distribution are optimized, and the gradient coating achieves high bonding strength and high wear resistance by regulating and controlling the Cr / Al atomic ratio layer by layer. The fatigue resistance, thermodynamic stability and impact wear resistance of the copper worm gear are remarkably improved, the copper worm gear is suitable for complex working conditions such as high load and dry friction, and technical support is provided for industrial application of the high-performance copper-based worm gear.

The present invention relates to a closed-loop method for recovering valuable metals in waste photovoltaic modules, and belongs to the technical field of waste photovoltaic module recycling. The present invention places waste photovoltaic welding strips in an inert atmosphere, heats to a temperature of 400-500°C and keeps the temperature, melts the tin-lead solder on the surface of the waste photovoltaic welding strips, and captures the silver on the surface of the tin-lead solder to form a silver-containing tin-lead melt A, while the internal copper does not melt to maintain a solid phase, and solid-liquid separation is performed to obtain a silver-containing tin-lead melt A and solid-phase copper; waste photovoltaic silicon cell powder is added to the silver-containing tin-lead melt A, heated and stirred in an inert atmosphere to capture silver by tin-lead to form a silver-containing tin-lead melt B, and solid-liquid separation is performed to obtain a silver-containing tin-lead melt B and solid-phase silicon and aluminum; metal zinc is added to the silver-containing tin-lead melt B for elution, and solid-liquid separation is performed to obtain a silver-zinc alloy and a tin-lead melt; the silver-zinc melt and the tin-lead melt are respectively subjected to vacuum distillation separation to obtain residual metallic silver, residual metallic tin, condensed product metallic zinc, and condensed product metallic lead.

The invention relates to a method for recycling valuable metals in lead-containing solid wastes and wet-process zinc smelting waste residues, belongs to the technical field of comprehensive recycling of metallurgy, industrial solid wastes and secondary resources, and cooperatively treats the lead-containing solid wastes and the waste residues produced in the smelting process. Through co-treatment with industrial lead-containing solid waste, valuable metals such as Cu, Pb, Zn and Ag in the jarosite slag and the lead-silver slag can be efficiently extracted and recycled, and the environmental risk caused by long-term stockpiling of the jarosite slag and the lead-silver slag is avoided; after the lead-containing solid waste and the zinc smelting slag are co-processed, the direct recovery rates of the metal lead and the zinc are 95% or above and 90% or above respectively, 85% or above of metal silver is enriched in a lead bullion phase, and the curing rate of the sulfur element is 95% or above; the slag mainly comprises CaO-FeO-SiO2 ternary slag, and can be directly used for producing building materials after water quenching; elemental sulfur in the material is cured in a sulfonium phase, so that the problem of SO2 flue gas pollution in the smelting process is avoided.

The invention discloses a method for recycling metal lead in waste lead plaster by utilizing a deep-eutectic solvent ore pulp electrolysis technology, which comprises the following specific steps: preparing a choline chloride-malonic acid deep-eutectic solvent, and adding a lead chloride solution with the concentration of 5-15g / L into the choline chloride-malonic acid deep-eutectic solvent to obtain deep-eutectic solvent ore pulp; the deep-eutectic solvent ore pulp is equally divided into two parts, the two parts are placed in a cathode chamber and an anode chamber of an electrolytic bath respectively, waste lead paste is placed in the anode chamber of the electrolytic bath and stirred, then a power source is connected, electrolysis is conducted with constant current, and finally lead powder is obtained at a cathode. Compared with a traditional acidic or alkaline ore pulp electrolysis technology, the eutectic ore pulp electrolysis system has rich hydrogen bond donors and acceptors, high-valence PbO2 in the waste lead plaster can be efficiently reduced, the high-valence PbO2, divalent PbSO4 and PbO form a complex to be dissolved into a solution, and the recovery effect is obvious.

This invention provides a metal-doped electrode and a method for the electrochemical oxidation of phenol to prepare p-benzoquinone. The metal-doped electrode comprises a conductive substrate material and lead, manganese, and ruthenium metals attached to the surface of the conductive substrate material, wherein the mass ratio of lead, manganese, and ruthenium is 60-95%:2-25%:2-15%. The method for the electrochemical oxidation of phenol to prepare p-benzoquinone uses the metal-doped electrode of this invention as the anode and a lead electrode as the cathode in a two-chamber electrolytic cell containing a diaphragm, and electrolyzes phenol to prepare p-benzoquinone under acidic conditions. The electrode of this invention is corrosion-resistant under acidic conditions and has a long service life. Current density >4000 A / m 2 By controlling the current density, the selectivity of benzoquinone is >90%. The electrode materials used are inexpensive and readily available, the electrochemical process is simple, and the process is safe and reliable, showing great promise for industrialization.

The invention discloses a recovery method of lead-zinc smelting dangerous waste slag, and relates to the technical field of resource recovery. According to the method, the hazardous waste residues and the graphene-carbon black composite wave-absorbing agent are mixed for microwave activation, the porosity of the residues is remarkably improved, then the high-lead residues are obtained through the two-stage reaction of gradient oxygen control desulfurization, the high-lead residues are subjected to side-blowing reduction, antimony-sulfur coordination separation is achieved, an upper copper matte phase and a lower lead-antimony sulfide melt are obtained, and the high-lead residues are subjected to side-blowing reduction. And distilling and desulfurizing the lower-layer lead-antimony sulfide melt to obtain metal lead and antimony-sulfur concentrate. According to the recovery process provided by the invention, the separation efficiency of copper, lead and antimony can be remarkably improved, and efficient selective separation of copper, lead and antimony is realized.

The present invention proposes a stepwise resource recovery method for germanium, lead, zinc and iron in hard zinc slag, and belongs to the technical field of valuable element extraction in lead and zinc smelting waste. The method of the present invention includes 8 steps of reduction smelting, fuming volatilization, acid production, leaching, reduction precipitation of germanium, two-stage pyrolysis, chlorination distillation and rectification. The reduction smelting can recover the lead in the hard zinc slag in the form of metallic lead, the fuming volatilization can enrich zinc and germanium in the form of smoke dust, the iron is enriched in the water-quenched slag, the zinc and germanium are leached into the solution, and then tannin is used to precipitate germanium, which can enrich all the germanium in the tannin germanium slag, the tannin germanium is pyrolyzed to obtain different products, the washing of the pyrolysis product is subjected to chlorination distillation to obtain crude germanium tetrachloride, and the crude germanium tetrachloride is rectified to obtain refined GeCl 4 In the present invention, the lead direct recovery rate can reach 98%, the zinc direct recovery rate can reach 96.92%, the iron resource utilization rate can reach 99%, and the germanium direct recovery rate can reach 95.04%.

The invention discloses a stable remediation method for lead element in mining area soil, and relates to the technical field of heavy metal contaminated soil remediation, and the technical scheme is as follows: the method comprises the following steps: preparing heavy metal lead contaminated soil, adding a nonmetallic mineral material consisting of medical stone, montmorillonite and potassium phosphate into the heavy metal lead contaminated soil, and uniformly mixing; wherein the addition amount of the non-metallic mineral material is 0.5%-3% of the mass of the heavy metal lead polluted soil based on the heavy metal lead polluted soil, the ratio of the medical stone to the montmorillonite to the potassium phosphate is 1: 1: x, the value of x is 0.5 and 2, and the addition amount of the non-metallic mineral material accounts for 1%-8% of the total mass of the soil. According to the method, modified nonmetallic mineral materials, namely medical stone and montmorillonite, are applied, lead is precipitated by potassium phosphate, and then heavy metal lead in the soil is converted into a stable residue-state compound under the action of the medical stone and the montmorillonite, so that stable remediation of the lead element in the mining area soil is realized.

The invention discloses a preparation method of a composite carbon material, the composite carbon material prepared by the preparation method and application of the composite carbon material. And mixing a mixed binder containing an organic binder, a metal simple substance, an additive and a solvent with the active carbon material, and drying to obtain the composite carbon material. According to the principle of similar compatibility, the organic ligand and the binder can form a sufficient mixture, and the metal elementary substance and the binder are sufficiently combined through the pi bond, so that the cohesiveness is improved. The presence of the binder can be made into a modified carbon material containing a hydrophobic layer. The hydrophobic layer is helpful for preventing active sites of the carbon material from being contacted with hydrogen ions, so that the hydrogen evolution overpotential of the carbon material is improved. Besides, the metal elementary substance can form crystal sites of the metal lead, the charging and discharging process of the lead-acid battery is a conversion process between the metal lead and lead sulfate, more crystal sites of the metal lead can refine the grain size of the metal lead as a charging product, and the purpose of refining the grains of the lead sulfate as a discharging product can be indirectly achieved. Finally, the cycle life of the lead-carbon battery is prolonged.

A composition is provided comprising one or more of alpha lead oxide, beta lead oxide, metallic lead. Pb2O3 and Pb3O4, the composition comprising particles comprising sub-particles, the sub-particles having a mean greatest dimension of from 10 to 300 nm. Methods of making such a composition are also described.

The invention belongs to the technical field of nonferrous metallurgy, and provides a compound additive for lead electrodeposition of a methanesulfonic acid system and a method for preparing metal lead. The compound additive comprises beta-naphthol, sodium lignin sulfonate and bone glue in a mass ratio of (0.25-1): (0.25-1): (1-2.5), the method for preparing the metal lead comprises the following steps: mixing methanesulfonic acid, lead methanesulfonate and a compound additive to obtain a mixed electrolyte; and the cathode and the anode are connected with direct current, and the mixed electrolyte is subjected to electroreduction deposition to obtain metal lead. The compound additive is used in the lead electrodeposition process of the methanesulfonic acid system, can inhibit the growth of cathode dendrites, burrs or scales of the methanesulfonic acid system, obtains a flat and compact cathode lead product, and overcomes the problems of limited morphology regulation effect, large usage amount, high reagent cost and the like when a single additive acts.

The invention discloses a method for co-producing metal lead and manganese dioxide through same-tank solid-phase electrolysis, and relates to the technical field of solid-phase electrolysis. According to the method, the lead-containing solid waste serves as a solid-phase cathode, a manganese-containing precursor serves as a solid-phase anode, in the same electrolytic bath, a sodium sulfate aqueous solution with the initial pH being 6-8 and the concentration being 10-400 g / L serves as electrolyte, electrolysis is conducted at the temperature of 20-95 DEG C, the anode current density is controlled to be 10-1000 A / m < 2 >, and the cathode current density is two times that of the anode current density; after electrolysis, stripping a product to obtain metal lead meeting YS / T 71-2013 lead bullion Pb96.0 C standard requirements and a manganese dioxide energy storage material with high additional value, high specific capacitance and controllable morphology; adjusting the pH value of the electrolyte to 6-8, and then recycling to ensure continuous production. Compared with traditional hydrometallurgy, the total energy consumption of co-production of metal lead and manganese dioxide per ton is reduced by 70.3%, and the production efficiency is remarkably improved.

The invention aims to solve the problem of anode material during electrolysis of oxysalt aqueous solution. The anode in the technology does not need metal titanium, iridium, tantalum, platinum, tin, antimony or oxides thereof, but directly uses relatively cheap metal lead. The main purposes of reducing the cost of the related electrolysis process, increasing the safety current during electrolysis and improving the efficiency during electrolysis are achieved. The technology has great significance in the application of industrial acid production, alkali production, hydrogen production, oxygen production and hydrogen peroxide production.

The invention belongs to the technical field of anti-radiation articles, and particularly relates to a light lead-based alloy and a preparation method and application thereof.The light lead-based alloy comprises, by weight, 2.5%-2.7% of tin, 0.015%-0.017% of silver, 0.55%-0.6% of cerium-aluminum alloy, 0.7%-1.0% of copper and the balance lead, and the copper is a sheet copper material. The metal lead is used as an alloy main body, the basic anti-radiation characteristic is reserved, the density of auxiliary material elements is smaller than that of Pb, the alloy density is smaller, the finished product is lighter, meanwhile, the anti-radiation performance is better than that of pure lead, under the combination of the two aspects, the anti-radiation performance is guaranteed, meanwhile, the weight of the needed alloy is reduced by 30% or above, and the load burden of workers is effectively relieved; the wearing comfort and the working efficiency are greatly improved.