38 results about "Metallic Lead" patented technology

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 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 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 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.

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.

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.

The invention discloses a method for recovering metal lead from nickel soot, and belongs to the technical field of hydrometallurgy. According to the method, a chlorine salt ore pulp electrolysis system is adopted, leaching and electro-deposition of lead are synchronously achieved in a diaphragm electrolytic cell, and metal lead is directly obtained from a cathode. The method comprises the following specific steps: washing, drying and grinding a nickel soot raw material, and then adding the nickel soot raw material into an electrolytic cell anode chamber separated by an acid and alkali resistant filter cloth diaphragm; the anode chamber and the cathode chamber are filled with electrolyte with the same composition, and the electrolyte comprises NaCl, HCl, PbCl2 and a dispersing agent; a ruthenium-plated titanium plate is used as an anode, a stainless steel plate is used as a cathode, and electrolysis is carried out under a constant current condition. According to the method, leaching and electrodeposition are integrated, the technological process is short, energy consumption is low, environment friendliness is achieved, lead in the nickel soot can be efficiently recycled, the recycling rate can reach 90% or above, and remarkable economic and environment-friendly benefits are achieved.

The invention discloses a preparation method and device of electrolytic magnesium, and belongs to the technical field of metal smelting. According to the method, a nickel ferrite-based eutectic ceramic inert anode and liquid metal lead or / and tin alloy are adopted as a cathode, and an industrial MgO raw material is electrolyzed in a MgF2-CaF2-LiF molten electrolyte at the temperature of 800-900 DEG C; after the magnesium-lead-tin alloy is generated through electrolysis, the high density of the metal lead-tin alloy is used for achieving effective isolation of the vacuum chamber and the electrolytic bath, and then the metal pure magnesium is obtained through online vacuum distillation separation by means of the vapor pressure difference of the metal lead-tin alloy and magnesium. According to the method, zero carbon emission in the electrolysis process can be achieved, and the used nickel ferrite-based eutectic ceramic anode can greatly improve the electrolysis current efficiency and the corrosion resistance; by adopting the lead-tin cathode liquid electrode, the production cost can be reduced; and the mode of separating the metal magnesium through online distillation can reduce the distillation energy consumption, and has remarkable environmental protection benefits and economic benefits.

The invention belongs to the technical field of treatment of cyanidation tailings, and particularly relates to a comprehensive utilization method of cyanidation tailings in a dangerous waste smelting process. The comprehensive utilization method comprises the following steps: carrying out high-temperature drying on the cyanidation tailings, mixing the dried cyanidation tailings and copper-containing dangerous waste materials, drying the obtained mixture, then pressing bricks, and drying the pressed bricks again, the dried bricks, coke and a flux are mixed and then smelted, gold, silver and copper in the bricks are reduced to obtain matte cast ingots, obtained molten slag is subjected to water quenching, obtained water-quenched slag and metal lead and metal zinc steam obtained through reduction in the smelting process are oxidized through hot air, and lead oxide and zinc oxide are obtained. By means of the comprehensive utilization method, full utilization of the copper-containing dangerous waste materials and the cyanidation tailings can be achieved, gold, silver, copper, lead and zinc in the waste materials can be efficiently recycled, and environmental pollution caused by mass discharge and stockpiling of the gold cyanidation tailings and the copper-containing dangerous waste materials is solved.

The invention discloses a method for preparing an organic amine lead halide film through a metal lead complexing technology, which comprises the following steps of: generating a lead iodide solution with high coordination uniformity in situ in a polar aprotic solvent or a mixed solvent thereof by using metal lead and an iodine simple substance, and depositing a lead iodide film on a conductive glass substrate coated with a charge transport layer, organic amine halide is deposited through a vapor deposition method, and dual control of heterogeneous reaction diffusion kinetics and equilibrium reaction thermodynamics is combined; the ABX3 type perovskite thin film with high quality and high uniformity is successfully prepared, and characterization analysis is carried out through characterization means such as X-ray diffraction spectrogram analysis, a scanning electron microscope and a current density-voltage (J-V) curve under simulated sunlight. According to the technical scheme, the synthesis cost of the organic amine lead halide film is reduced, the stability of the perovskite film is improved, and the photoelectric conversion efficiency of a solar cell prepared from the perovskite film reaches 22.65%.

This invention discloses a method for recovering lead from waste ash dishes, belonging to the field of resource utilization. The method includes: (1) pretreatment and reduction smelting: the waste ash dishes are crushed and mixed with reducing agent and flux for high-temperature reduction smelting to obtain crude lead alloy and slag; (2) vacuum distillation separation: the crude lead alloy is heated under vacuum to volatilize and condense the lead to obtain metallic lead, and the residue is a precious metal enrichment. This invention adopts a combination process of "reduction smelting enrichment + vacuum distillation separation", which uses physical gas phase separation to replace traditional chemical oxidation separation, avoiding lead oxidation loss and lead-containing flue gas generation. It has the advantages of short process, high recovery rate and environmental friendliness, and is applicable to various sources such as waste ash dishes for fire assay analysis or waste ash dishes for precious lead ash blowing refining.

The present application relates to a kind of methods for recycling valuable metals in lead-containing solid waste and wet zinc smelting slag, belong to metallurgy, industrial solid waste and secondary resource comprehensive recycling technical field, and lead-containing solid waste and the waste slag produced in smelting process are handled collaboratively.By collaborative disposal with industrial lead-containing solid waste, valuable metals such as Cu, Pb, Zn, Ag in iron pyrite residue and lead-silver slag can be efficiently extracted and recycled, avoiding environmental risks caused by long-term storage of the two residues;After collaborative disposal of lead-containing solid waste and zinc smelting slag, the direct recovery rate of lead and zinc is more than 95% and 90% respectively, more than 85% of the silver metal is enriched in the crude lead phase, and the sulfur solidification rate is more than 95%;The slag is mainly CaO-FeO-SiO2 ternary slag, which can be directly used for producing building materials after water quenching;Elemental sulfur in the material is solidified in the matte phase, thereby avoiding SO2 flue gas pollution problems in the smelting process.

The application discloses a preparation method of low-lead cassava powder and belongs to the technical field of food processing. The method comprises the following steps: (1) screening a cassava variety with low lead accumulation; (2) planting the cassava in soil to which a composite soil modifier is applied, cultivating until maturity, and harvesting tubers; (3) uniformly homogenizing the cassava tubers by mixing and crushing, adjusting the pH to 3-9, adding curcumin-chitosan adsorption material, and then treating the adsorbed homogenate with ultrasonic waves with a combination power of 5-20 w / mL to adsorb free-state metal lead, and then removing the curcumin-chitosan adsorption material by filtration, centrifugation, and drying the precipitate to obtain the low-lead cassava powder. The application realizes the reduction and control of heavy metal lead in cassava by using a cassava variety with low lead accumulation and a soil modifier, and the lead content in the cassava powder is reduced by using ultrasonic waves combined with adsorption material in the cassava processing process. The application intervenes in the whole process from planting to processing, and provides a systematic solution for the control and removal of heavy metals in cassava.

The present application relates to the field of nonferrous metallurgy, and particularly relates to a liquid slag electrically enhanced reduction mother-son furnace and a method for reducing lead, zinc and iron, the mother-son furnace comprising a mother furnace and a son furnace, the son furnace being in communication with the bottom of the mother furnace to form a slag inlet channel; the mother furnace is divided into three furnace bodies, a first charging port for adding coke particles, a second charging port for adding lime and / or silicon dioxide and at least one group of electrodes A are arranged above each furnace body; a flue gas outlet and a slag outlet are arranged at the end of the mother furnace away from the son furnace; a protruding platform is arranged at the inner bottom of the mother furnace, and the platform divides the mother furnace into a lead collection area on the left and an iron collection area on the right. The present application adopts a liquid slag electrically enhanced direct reduction mother-son furnace for lead, zinc and iron polymetal, at least one group of electrodes A is arranged above each furnace body, the heating temperature of the electrodes A of different furnace bodies is different, energy saving and high efficiency are achieved, and metal zinc and metal iron can be obtained at the same time of outputting metal lead products, so that the iron in the liquid slag is realized as a high-value resource.

The present invention discloses a two-dimensional material-coated lead composite material, a preparation method thereof, a lead paste, an electrode, and a lead-acid battery. The preparation method comprises: a mixing step of mixing a MXene material with one or more of metallic lead, a metallic lead alloy, and a lead compound to obtain a mixture or composite; and a heating step of mixing a component A with the mixture or composite and then heating the mixture or composite, wherein the component A is a simple substance of element A, a hydride of element A, or a compound capable of reacting to generate a simple substance of element A or a hydride of element A, so that the MXene material and element A react to form a MAX phase structure. The two-dimensional material-coated lead composite material obtained by the present invention has a coating structure with a dense core and a fluffy, sealed shell. This effectively mitigates the integrity of the core-shell structure during the significant volume changes of the active material during the electrode material preparation process and the charge-discharge process, thereby ensuring the stability of the electrode material.

An inorganic material in a form of open-porosity particles, each of the particles comprising a lead vanadate or phosphovanadate of formula Pb3-xXx(VO4)2-2y(PO4)2y, wherein x=0 or x>0 but ≤0.33; y=0 or y>0 but <1; X=Ba2+, Ca2+, Sr2+ or Cd2+; and metallic lead or a lead salt. A method for preparing the material, a method for capturing iodine present in a gaseous effluent as well as a method for conditioning iodine present in a gaseous effluent in a form of an iodoapatite.

The invention relates to the technical field of lead-carbon batteries, and particularly discloses a novel polar plate manufacturing process for improving the performance of a lead-carbon battery. Comprising the following steps that S1, a metal lead ingot is subjected to melting and spray powdering, and lead powder is obtained; s2, carrying out ball milling treatment on the carbon material to obtain nano carbon powder; s3, lead powder and nano carbon powder are mixed to obtain mixed slurry; s4, dilute sulphuric acid is added into the mixed slurry, stirring continues, and lead paste is obtained; s5, the lead alloy plate grid is coated with the lead paste; s6, curing the coated plate grid; s7, drying the cured polar plate at the bottom; and S8, carrying out surface treatment on the dried polar plate. The manufacturing process of the novel polar plate with the lead-carbon battery performance can be applied to the fields of new energy automobile start-stop systems, distributed energy storage power stations, communication base station standby power supplies and low-speed electric vehicles, and has the advantages of high utilization rate of polar plate active substances, high battery rate performance, prolonged cycle life and controllable production cost.

The application discloses a preparation method of a composite carbon material, the composite carbon material prepared by the method and application of the composite carbon material. A mixed binder containing an organic binder, a metal element, an additive and a solvent is mixed with an activated carbon material, and then dried to obtain the composite carbon material. According to the principle of similarity and compatibility, the organic ligand can form a sufficient mixture with the binder, and the pi bond can make the metal element sufficiently combined with the binder, thereby improving the adhesion. The presence of the binder can make a modified carbon material containing a hydrophobic layer. The hydrophobic layer can help to hinder the contact between active sites of the carbon material and hydrogen ions, thereby improving the hydrogen evolution overpotential of the carbon material. In addition, the metal element can form crystallization sites of metal lead, the charging and discharging process of a lead-acid battery is a conversion process between the metal lead and lead sulfate, more crystallization sites of the metal lead can refine the grain size of the charged product metal lead, and can indirectly refine the grain size of the discharged product lead sulfate, thereby prolonging the cycle life of the lead-carbon battery.

The application relates to the technical field of alloy materials, in particular to a preparation method of a lithium-lead alloy Li 17 Pb 83 for nuclear industry. The preparation method comprises the following steps: preparing metal lead and granular metal lithium, the average particle size of the granular metal lithium is 3-10 mm; the metal lead is placed in an oxide crucible of a vacuum induction furnace, and the granular metal lithium is placed in a secondary feeding hopper; after vacuum treatment of the vacuum induction furnace, inert gas is filled; the metal lead is heated and melted, then the granular metal lithium is added into the lead melt at a rate of 5-15 g / min; and then smelting is carried out at 285-335 DEG C for 10-30 min, and then casting is formed. Through the above process, the lithium-lead alloy Li 17 Pb 83 prepared by the application has uniform components, and secondary smelting is not needed, and the alloy ingot has good melting point and component consistency.

An ammonium complex system-based method for separating and purifying lead, zinc, cadmium, and copper, comprising the following steps: a zinc-containing raw material is leached using a leach solution to produce a leached solution; a filtrate and a filter residue are produced by filtration; the filtrate is mixed with metal lead to displace copper, undergoes a solid-liquid separation to produce a first separated liquid, is mixed with metal cadmium to displace lead, undergoes a solid-liquid separation to produce a second separated liquid, is mixed with metal zinc to displace cadmium, and undergoes a solid-liquid separation to produce a third separated liquid; and, the third separated liquid is electrolyzed to produce metal zinc, and an electrolytic solution is returned to the leaching step.