723 results about "Battery recycling" patented technology

The invention discloses a method for separating, purifying and regenerating waste battery negative electrode powder, which belongs to the field of battery recycling and regenerating, and mainly comprises the following process steps of: ball-milling and screening waste battery negative electrode pieces into certain granularity, soaking the waste battery negative electrode pieces in alkali liquor and an impurity removal agent, and stirring for reaction and separation to obtain a negative electrode powder wet material and a copper ion solution; carrying out drying demagnetization and infrared irradiation treatment on the wet negative electrode powder to obtain regenerated negative electrode powder; and the copper ion solution is subjected to extraction, back extraction and reduction to obtain crude copper, and the crude copper is subjected to vacuum distillation to obtain an electronic-grade copper product. Wherein the impurity removal agent comprises an oxidizing agent, the oxidizing agent oxidizes elemental copper and forms soluble substances under the action of alkali liquor, and the excellent separation effect is achieved. The negative electrode powder treatment comprises infrared irradiation treatment, decomposition of an adhesive can be achieved through the dual effects of heat irradiation and heat conduction, the volume heating effect is formed through scattering, surface crusting is effectively avoided, the adhesive can be efficiently removed, and the quality and the recycling efficiency of the regenerated negative electrode powder are guaranteed.

The invention relates to the technical field of new energy battery recycling, and discloses a new energy battery recycling device which comprises a disassembling table, supporting tables are fixed to the two sides of the disassembling table, multi-axis mechanical arms are fixed to the tops of the supporting tables, and a laser cutting head and a vacuum adsorber are fixed to the tail ends of the two multi-axis mechanical arms correspondingly. The new energy battery recycling device comprises a disassembling table, adjusting grooves are formed in the inner walls of the two sides of the disassembling table, first air cylinders are slidably connected to the interiors of the adjusting grooves, and second air cylinders are fixed to the bottoms of the first air cylinders. The first air cylinder drives the linkage frame and the ejector rod to move in the vertical direction of the new energy battery, in the moving process, the ejector rod is clamped into a cutting gap of the new energy battery, and then through continuous movement of the ejector rod, the effect of uncovering shells on the two sides of the soft package lithium battery is achieved; and the convenience of disassembling the shell of the soft package lithium battery by the vacuum adsorber is further improved.

The invention belongs to the technical field of resource recycling of waste lithium batteries, and particularly relates to a method for extracting lithium by stripping and coupling organic matter degradation of waste lithium batteries, which comprises the following steps: S1, obtaining a waste lithium iron phosphate positive plate and an organic pollutant aqueous solution; s2, soaking the waste lithium iron phosphate positive plate in an organic acid solution, and stripping to obtain an aluminum foil and a lithium iron phosphate material; s3, adding the lithium iron phosphate material, a complexing agent and an oxidation auxiliary agent into the organic pollutant aqueous solution to obtain a first reaction system, and carrying out a first reaction; after the reaction of the second reaction system is balanced, carrying out solid-liquid separation to obtain filtrate and filter residues, adding a lithium salt precipitator into the filtrate, and filtering to obtain lithium salt and recovering the lithium salt; according to the method, the battery recovery process and the wastewater treatment process are ingeniously coupled, the components of the waste battery material are used as the catalyst, organic pollutants in the environment are degraded, and cooperative treatment of waste and upgrading and recovery of resources are achieved.

The utility model provides a waste battery recovery device. The waste battery recovery device comprises a pretreatment device, a melting device, a first impurity removal device, a non-lithium active metal element extraction device, a second impurity removal device and a second metal element extraction device. According to the waste battery recycling device, the recycling process can be simplified, the recycling yield is increased, the recycling cost is reduced, and the requirement for the device is low.

The invention belongs to the technical field of waste battery recovery and regeneration, and particularly relates to a method for recovering valuable metal from a waste lithium battery positive electrode material. The method comprises the following steps: carrying out sulfuration roasting on waste positive electrode powder, selectively extracting lithium in a water leaching manner, and precipitating lithium to obtain lithium carbonate; separating and purifying the nickel, the cobalt and the manganese through microwave acid leaching, precipitation impurity removal and step-by-step extraction to obtain extract liquor of the nickel, the cobalt and the manganese, and performing reverse extraction on the extract liquor to obtain battery-grade cobalt sulfate, battery-grade nickel sulfate and battery-grade manganese sulfate. According to the method, lithium is extracted firstly, the influence of the lithium element on subsequent nickel-cobalt-manganese extraction is reduced, meanwhile, the recovery rate of lithium is increased through the water leaching method, and the recovery cost is reduced. According to the method, precipitation and impurity removal are performed before nickel-cobalt-manganese extraction, so that the content of impurities in a sulfate solution is reduced, and the recovery rate of nickel, cobalt and manganese is greatly improved.

The invention provides a waste battery recovery method and device, the method uses a low-melting-point molten salt with reducibility as a reactant to strip Li, Co, Ni, Mn and other elements in a waste battery from an oxygen element, chlorine salt which is easier to carry out subsequent replacement reaction is generated, the Li, Co, Ni, Mn and other elements in the waste battery can be extracted step by step through the replacement reaction, and the recovery rate of the waste battery is improved. And the recovery process is simplified. The waste battery recycling method has the advantages of being low in cost, high in recycling yield, low in requirement for recycling equipment and the like.

The invention discloses a method for regenerating and preparing high-voltage lithium cobalt oxide by using an invalid lithium cobalt oxide material, and belongs to the technical field of battery recovery. The method comprises the following steps: S1, carrying out ball milling and mixing on failed lithium cobalt oxide powder and a sodium source, and then carrying out solid-phase sintering to obtain a P2 type sodium cobalt oxide and lithium cobalt oxide material; s2, the P2 type sodium cobaltate and lithium cobaltate material is placed in a lithium-containing solution for a hydrothermal reaction, a regenerated O2-O3 cotype lithium cobaltate material is obtained, the regenerated O2-O3 cotype lithium cobaltate material has the advantages of being good in cycling stability, high in rate capability, high in low-temperature performance and the like under the high voltage of 4.6 V, and the performance of the regenerated O2-O3 cotype lithium cobaltate material is superior to that of a commercial lithium cobaltate material.

The invention belongs to the field of waste battery recovery processing, and particularly relates to a waste battery pack deep intelligent discharging system, which comprises a control unit, which is electrically connected with a waste battery pack through a discharging loop and is used for discharging the waste battery pack; a fire extinguishing medium is accommodated in the fire extinguishing pool; the bearing mechanism is arranged at the feeding opening of the fire extinguishing pool and used for bearing the waste battery pack in the discharging process; the driving mechanism is connected with the bearing mechanism and used for driving the bearing mechanism to execute opening and closing actions; and the temperature monitoring unit is used for monitoring the temperature of the waste battery pack in real time. The deep intelligent discharging system for the waste battery pack can safely, intelligently and quickly discharge the waste battery pack, does not pollute the environment, and is relatively low in discharging cost, reasonable in structure, safe and reliable.

The invention discloses a method for separating and recycling phosphorus, iron and lithium in battery black powder, and relates to the technical field of battery recycling. The method comprises the following steps: carrying out acid leaching on battery black powder to obtain a battery black powder leaching solution and filter residues; an oxidizing agent is added into the battery black powder leaching solution, the pH of the solution is adjusted to 1.8-2.5, solid-liquid separation is conducted after the reaction is completed, and iron phosphate sediment and a lithium-containing solution are obtained; adjusting the pH value of the lithium-containing solution to 10-12, and carrying out solid-liquid separation after the reaction is completed to obtain a metal precipitate and a lithium sulfate solution; dissolving the iron phosphate precipitate in a sulfuric acid solution, adding a reducing agent to reduce ferric iron into ferrous iron, separating out ferrous sulfate by adopting an alcohol precipitation method or an ammonium sulfate crystallization method, and performing solid-liquid separation after the reaction is completed to obtain ferrous sulfate precipitate or ammonium ferrous sulfate crystals and mother liquor; and evaporating and concentrating the mother liquor, and extracting to obtain a phosphoric acid solution. According to the method, the three elements of phosphorus, iron and lithium in the battery black powder can be recycled, and the environmental problem caused by stacking of the lithium extraction slag can be avoided.

The invention discloses a method for separating and recycling phosphorus, iron and lithium in battery black powder, and relates to the technical field of battery recycling. The method comprises the following steps: mixing and leaching battery black powder and sulfuric acid, and filtering to obtain a leaching solution; the pH of the leachate is controlled, ferrous sulfate in the solution is separated out through alcohol substances or ammonium sulfate, and ferrous sulfate precipitates or ammonium ferrous sulfate crystals and mother liquor are obtained after filtration; evaporating and concentrating the mother liquor, adding an impurity removing agent into the mother liquor, and extracting to obtain a phosphoric acid solution and a lithium-containing solution; after phosphoric acid is supplemented into the lithium-containing solution, the pH is adjusted to be 8-10, and battery-grade lithium phosphate precipitates are obtained. According to the method, iron in the leachate is separated out firstly, and the subsequent impurity removal difficulty is greatly reduced, so that recycling of three elements including phosphorus, iron and lithium in the battery black powder is facilitated, and the environmental problem caused by stacking of lithium extraction residues can be avoided.

The invention relates to the technical field of battery recovery, and particularly discloses a recovery method of waste lithium iron phosphate and a lithium ion secondary battery. The recovery method of the waste lithium iron phosphate comprises the following steps: leaching acid liquor, and carrying out solid-liquid separation to obtain acid leaching liquor and a regenerated negative electrode material; cooling and crystallizing, and carrying out solid-liquid separation to obtain first iron-removed slag and first iron-removed liquid; oxidizing, adjusting pH, removing iron, and carrying out solid-liquid separation to obtain second iron-removed slag and second iron-removed liquid; adjusting the pH to precipitate lithium phosphate, and carrying out solid-liquid separation to obtain first lithium phosphate slag and lithium precipitation mother liquor; adding a lithium source into the lithium precipitation mother solution, and carrying out solid-liquid separation after reaction to obtain second lithium phosphate slag and a phosphorus removal solution; and evaporating and concentrating the dephosphorized solution to obtain a by-product salt. By implementing the invention, the recovery of each useful component can be realized.

The invention discloses an intelligent evaluation, disassembly and recovery device for retired batteries, and relates to the technical field of battery disassembly and recovery, the intelligent evaluation, disassembly and recovery device comprises a disassembly table, a shell top disassembly assembly is slidably arranged at the top of the disassembly table, a shell disassembly assembly is arranged in the disassembly table, and the shell top disassembly assembly comprises a movable frame connected with the top of the disassembly table in an embedded manner; the shell disassembling assembly comprises two sets of first servo motors installed in the disassembling table, and the output ends of first electric push rods are connected with a first guide rail and a second guide rail correspondingly. By arranging the shell disassembling assembly, after the battery shell top is disassembled, the battery shell is cut from the bottom of the battery, so that a peripheral frame body of the battery shell is conveniently disassembled and recycled, the purpose of classified recycling of the battery shell and internal elements of the battery is achieved, meanwhile, a battery module in the battery shell is conveniently leaked out, and the battery shell is convenient to use. Subsequent detection, disassembly and recovery of the battery module are facilitated, and the recovery effect and the recovery utilization rate of the retired battery are improved.

The invention discloses a recovery method of a lithium iron phosphate positive electrode material, and belongs to the technical field of waste lithium ion battery recovery. The invention relates to a lithium iron phosphate positive electrode material recovery method, which comprises: S1, calcining a lithium iron phosphate positive electrode plate obtained through disassembly, carrying out ultrasonic treatment, and finally screening and washing to obtain waste lithium iron phosphate; and S2, adding the modified carbon nanotube, a carbon source and Li2CO3 into the waste lithium iron phosphate, then adding a dispersing agent, carrying out ball milling and drying, and calcining the obtained mixture in an inert atmosphere to obtain the lithium iron phosphate positive electrode material. The modified carbon nanotubes are added into the raw materials, and the modified carbon nanotubes can be uniformly dispersed in the raw materials to form a uniform three-dimensional conductive network, so that the electrochemical performance of the material is improved. And the recovery method of the lithium iron phosphate positive electrode material provided by the invention has simple steps and is beneficial to large-scale popularization.

The application discloses a kind of broken devices for waste battery recycling, specifically relates to waste battery recycling broken device technical field, including four support legs one of left side and right side and two support legs two in middle part, two support legs two upper end are fixedly installed with bearing assembly in common, left side and right side four support legs one upper end are fixedly installed with distribution component in common, cutting assembly is fixedly installed on the outer surface upper portion of bearing assembly.The broken device for waste battery recycling of the application, by setting bearing assembly, the electrolyte inside the waste battery after cutting can be uniformly collected and treated, and there will be residual electrolyte in the waste battery after cutting, at this time, the waste battery after cutting can be stirred by bearing assembly, so that the waste battery after cutting is turned over, the residual electrolyte in it is poured out, to avoid the situation of residual.

A battery recycling system according to the present disclosure includes: a primary crushing device configured to crush a case of a discharged secondary battery to expose an electrode material; an electrolytic solution recovery device configured to heat the secondary battery whose electrode material has been exposed under a reduced-pressure environment to recover an electrolytic solution contained in the electrode material; a secondary crushing device configured to further crush the secondary battery whose electrolytic solution has been recovered; a sorting device configured to sort crushed objects of the secondary battery; and an adjustment device configured to adjust an atmosphere in each of the devices to an N2 atmosphere, and further includes: a plurality of first sensors configured to detect oxygen concentrations in the respective devices; a second sensor; and a control device that causes the second sensor to selectively detect the oxygen concentration in each of the devices.

The application discloses a kind of based on heat radiation resourceful treatment waste lithium battery method, it is related to waste battery recycling technical field, steps are as follows: the waste lithium battery of recycling is pyrolyzed so that electrolyte is evaporated, and after waste lithium battery cooling, disassembly is carried out, copper shell, aluminum shell, positive electrode material and negative electrode material are obtained;Positive electrode material, negative electrode material are crushed, screening, and copper, iron, aluminum material obtained, and the remaining material is separated three times, first separation obtains graphite, second separation obtains iron carbonate, third separation obtains lithium carbonate and sodium chloride.The application can make waste lithium iron phosphate battery not need to discharge when processing, all materials in waste lithium battery are resource utilization, and the processing process is safe.

The invention discloses an intelligent repairing method and device for electrode powder and a storage medium, and belongs to the technical field of battery recycling. The intelligent repairing method of the electrode powder comprises the following steps: S1, collecting microscopic state data of positive electrode powder of a retired battery; s2, the microscopic state data are input into a defect diagnosis model, a defect quantitative diagnosis report of the positive electrode powder is obtained, and the defect quantitative diagnosis report comprises defect types and severity degree information; and S3, the defect quantitative diagnosis report is input into a repair decision model, at least one set of topological repair scheme for the positive electrode powder is obtained, and the topological repair scheme comprises repair process parameters. In addition, the invention further provides an electrode powder repairing device and a storage medium. The repair method provided by the invention can be used for accurately and efficiently treating the retired battery electrode powder.

The present application belongs to the technical field of waste battery recycling, and particularly relates to a method for preparing battery-grade iron phosphate and lithium carbonate from waste positive electrode materials. The method comprises the following steps: (1) acid leaching; (2) copper removal by extraction; (3) aluminum removal by ammonium sulfate; (4) adjusting the iron-phosphorus ratio, oxidation, and iron phosphate synthesis; (5) aging, phosphoric acid washing, and pure water washing; (6) iron phosphate drying and calcination to prepare battery-grade iron phosphate; (7) impurity removal and ammonia removal by lime; (8) lithium extraction by evaporation and concentration, lithium precipitation by sodium carbonate, and washing; (9) carbonization, calcium and magnesium removal by resin, pyrolysis, and drying to prepare battery-grade lithium carbonate. The method can realize comprehensive recovery of valuable elements such as iron, phosphorus, lithium, aluminum, and copper in waste lithium iron phosphate positive electrode materials, can realize ammonia water recycling, and can realize zero wastewater discharge through evaporation and concentration and solution recycling. The method has a high valuable metal recovery rate, and the comprehensive recovery rates of lithium and iron are both greater than 95%.

The application belongs to the technical field of battery recycling, and discloses a flotation depressant, a preparation method and application thereof. The flotation depressant comprises catechol, an oxidizing agent and a weak acid buffer solution, and the pH value of the flotation depressant is 4-6.5. The catechol and the oxidizing agent are dissolved in the weak acid buffer solution to prepare the flotation depressant, the flotation depressant can selectively inhibit the flotation of the positive electrode material, and thus the positive electrode material and the negative electrode material are separated through reverse flotation. The flotation depressant is used for flotation to obtain the positive electrode material rich in cobalt, and the grade and the recovery rate of the positive electrode material are as high as 90% and 83% respectively. The preparation method of the flotation depressant is simple, the cost is low, the flotation depressant is friendly to the environment, and the flotation depressant has a good application prospect in industrial battery recycling.

The application discloses a rotary furnace for source dust reduction in waste lithium battery recycling, and belongs to the technical field of lithium battery recycling. The rotary furnace for source dust reduction in waste lithium battery recycling comprises a feeding bin, a furnace body, a furnace pipe, an exhaust hopper, a screw conveyor and a cylinder body. The furnace pipe is arranged in the furnace body, the cylinder body is installed in the furnace pipe, and the cylinder body is open at the top. The conveying mechanism of the screw conveyor is installed in the cylinder body. The feeding bin is fixed above the cylinder body. The exhaust hopper is fixed on the furnace pipe and communicates with the inside of the furnace pipe. The exhaust hopper is located at the feeding end of the furnace body. The rotary furnace can simply and efficiently reduce dust in hot gas and realize black powder recycling.

The application belongs to the technical field of battery recycling, and particularly relates to a method for recycling lithium ion battery waste. The method for recycling lithium ion battery waste provided by the application comprises the processes of reduction leaching, iron powder copper removal, iron phosphate precipitation, iron and aluminum removal, calcium and magnesium removal, P204 manganese extraction, P507 nickel and cobalt extraction, and resin adsorption lithium extraction in sequence. The method can process various complex battery waste, and the elements such as nickel, cobalt, manganese, phosphorus, iron, copper and lithium in the waste can be recycled, and the economic benefit is high. The various residues and condensate produced in the process are treated, the nickel, cobalt and lithium can be deeply recycled, the economic benefit is improved, and zero emission is truly realized.

The application relates to the technical field of lithium iron phosphate battery recycling, in particular to a method for recycling waste lithium iron phosphate battery materials. Specifically, after the waste lithium iron phosphate battery is discharged, the battery is disassembled and separated under an inert atmosphere, and the battery is separately collected; the battery is mechanically pulverized after high-temperature calcination, and lithium iron phosphate coarse powder, copper powder and aluminum powder are obtained through vibration screening; the lithium iron phosphate coarse powder is added into an acid solution for leaching, the acid leaching solution is adsorbed and impurity-removed through metal impurity adsorption resin, and then lithium carbonate, ammonium dihydrogen phosphate and ferrous oxalate are added; after uniform stirring, drying, ball milling and roasting, lithium iron phosphate powder is obtained. The metal impurity adsorption resin has good complexing and stabilizing effects on various metal ions, so that the high purity of the lithium iron phosphate is ensured, and comprehensive resource utilization of the waste lithium iron phosphate battery is realized.

The utility model discloses a positive and negative electrode material separation device, which belongs to the technical field of battery recovery, and is characterized by comprising a frame body, hanging brackets are welded at four corners of the top of the frame body, a screening hopper is hung on each of the hanging brackets through an elastic mechanism, and two vibrating motors which are distributed oppositely are fixedly connected to the outer wall of the bottom of the screening hopper. The inner wall of the bottom of the screening hopper is fixedly connected with a plurality of blocking strips distributed at equal intervals, an electromagnet is arranged between every two adjacent blocking strips, and the two sides of the frame body are provided with a first downward pressing assembly and a second downward pressing assembly which are used for conducting downward pressing and inclining on the screening hopper in different directions correspondingly. According to the utility model, the downward pressing assembly I and the downward pressing assembly II are respectively started, so that the screening hopper is respectively inclined towards two ends, so that a battery material which is magnetically sucked and screened and cathode copper foil fragments which are magnetically sucked by an electromagnet are respectively discharged into the collecting mechanism, and vibration and magnetic suction are matched, so that the cathode copper foil fragments are accurately classified.

A method of recovering a nickel, cobalt, and manganese salts includes removing impurities from an acidic aqueous leach solution including cobalt, manganese, and nickel salts to produce a purified aqueous solution including the metal salts and remaining impurity salts. The method includes extracting the purified aqueous solution in a first liquid-liquid extraction step using a first organic extractant to produce a first aqueous raffinate solution including the cobalt, manganese, and nickel salts and a first loaded organic solution including one or more of the remaining impurity salts from the purified aqueous solution. The method further includes extracting the cobalt, manganese, and nickel salts from the first aqueous raffinate solution in a second liquid-liquid extraction step using a second organic extractant to produce a second loaded organic solution including the cobalt, manganese and nickel salts and a second aqueous raffinate solution comprising one or more of the remaining impurity salts.

The invention discloses a new energy automobile power storage battery recycling and transferring mechanism, and relates to the technical field of battery recycling and transferring. Comprising a transfer piece, the transfer piece is provided with a spacing adjusting piece, and the spacing adjusting piece is slidably provided with two live detection pieces; the live detection piece is used for detecting the discharge degree, and the spacing adjustment piece is used for adapting to the electrode distance of the battery; a wind power isolation piece is mounted on the transfer piece; the wind power separator is used for cleaning interpolar moisture by wind power; a handheld safety piece is mounted on the transfer piece; an electricity storage stop piece is mounted in the transfer piece; the problems that according to an existing new energy automobile power storage battery recycling and transferring mechanism, it is not convenient to ensure electricity storage detection, and short-circuit detonation is likely to happen when batteries are directly recycled in a disordered mode are solved. And the live detection piece can be used for detecting the residual electric quantity, so that the safety of the structure during battery recovery can be improved, and direct and disordered battery recovery can be prevented.

The application provides a battery needle discharge device and a battery recycling system, and relates to the technical field of battery recycling. The battery needle discharge device comprises a water tank assembly, the water tank assembly comprises a water tank and a conveying piece, the top of the water tank is provided with a feeding port and a discharging port, the water tank is used for containing a liquid discharge medium suitable for soaking batteries, and the conveying piece is at least partially located in the water tank. The conveying piece is located in the water tank and is arranged to extend from the feeding port to the discharging port of the water tank, and is used for receiving the batteries fed from the feeding port and conveying the batteries to the discharging port. The application is beneficial to the discharge of the electrolyte in the battery and accelerates the discharge; and the transfer docking time of the discharge process and the disassembly process is shortened, and the work efficiency is improved.

The invention relates to the technical field of battery recovery, in particular to a battery recovery production line which comprises a rack, a conveyor, a vibration structure, a dust collection structure, a quick release structure, a transition cabin, a crushing structure, a carbonization structure, a screening structure, a second dust remover and a tail gas treatment unit. The arrangement of the vibration structure can effectively enable battery or pole piece materials at the material port of the conveyor to be uniformly distributed, the problem of blockage caused by accumulation of the materials at the material port is avoided, the operation efficiency is improved, manual feeding or cleaning by using a shovel is avoided, the operation is simple and convenient, and the labor intensity is reduced. The arrangement of the dust suction structure can quickly suck dust shaken out by materials on the vibration structure, the dust is prevented from floating in the air, the flexibility is high, the arrangement of the quick disassembly structure facilitates quick disassembly of a protective cover on the conveyor, the operation is simple and convenient, and the arrangement of the screening structure facilitates fine separation of black powder and metal particles. And the problem of overall shutdown of the device caused by frequent blocking due to powder agglomeration is avoided.

The utility model provides battery recycling and disassembling equipment. The utility model provides battery recycling and disassembling equipment. The battery recycling and disassembling equipment comprises a disassembling part for disassembling a positive pole piece in a pole core of lithium iron phosphate and an infiltrating and flushing part for infiltrating and flushing the positive pole piece, the infiltrating and flushing part comprises a soaking pool and at least one spraying frame; the disassembling part comprises a first rack, a recycling roller set arranged on the first rack and a first driving assembly arranged on the first rack and used for driving the recycling roller set. The battery recycling and disassembling equipment provided by the utility model has the beneficial effects that the battery recycling and disassembling equipment provided by the utility model is suitable for the battery recycling and disassembling method, is simple in structure and easy to implement, and is specially used for disassembling the pole core of the lithium iron phosphate battery; the positive pole piece in the pole core is separated from other parts, so that the stripping efficiency and the stripping quality of the positive current collector and the positive active material in the positive pole piece are high.

The invention discloses a waste lithium battery recovery co-processing technology, and relates to the technical field of lithium battery recovery, the waste lithium battery recovery co-processing technology comprises the following steps: uniformly mixing and coating a composite processing slurry with electrode fragments, black powder and a current collector mixture obtained by disassembling a waste battery to form a precursor blank, and roasting the precursor blank to obtain the lithium battery. The method comprises the following steps: carrying out solid-liquid separation, impurity removal and surface structure optimization on a solid-liquid mixed system obtained after the reaction, obtaining a leaching solution and a solid intermediate product, and recycling the leaching solution and the solid intermediate product through one or more recycling methods. And carrying out selective recovery and productization processing on the pretreated leachate and solid intermediate products. According to the treatment process, through the links of slurry composite treatment, precursor blank heat treatment, roasting reduction, solid-liquid separation, optimization pretreatment and the like, the metal recovery rate and the product purity are improved, environmental pollution is reduced, and the resource utilization efficiency and the environmental protection property are effectively improved.

The invention relates to the technical field of battery recovery, in particular to a ternary lithium and lithium iron phosphate mixed recovery optimization method and system. The method comprises the following steps: acquiring electromagnetic characteristic set data containing dielectric response data and conductivity response data of the current batch of mixed black powder under electromagnetic waves with different frequencies; comparing the electromagnetic characteristic set data with a material characteristic reference library, and determining the material state of the mixed black powder of the current batch; correcting the black powder proportion estimation model by using the material state of the mixed black powder of the current batch to obtain a corrected black powder proportion estimation model; and based on the corrected black powder proportion estimation model, determining a recovery scheme of the current batch of mixed black powder. The invention aims to solve the problems of poor hydrometallurgical treatment effect and low recovery purity caused by incapability of accurately judging the material proportion in the recovery process of ternary lithium and lithium iron phosphate mixed black powder in the existing mixed recovery method.