943 results about "Battery recycling" patented technology

A method for recycling waste lithium iron phosphate batteries relates to a battery recycling method. The method provided by the invention aims to provide a battery recycling method which is simple in process and low in cost. The method comprises the following steps of: removing residual electric quantity of a waste lithium iron phosphate battery, taking out the cell of the battery and crashing the cell into fragments, soaking the cell fragments in sodium hydroxide solution and stirring; and then performing filtering, washing, drying and vibratory screening so as to obtain pure alumium, pure copper and a diaphragm on a screen, recycling alumium and copper through smelting so as to obtain mixed powder under the screen, cleaning the mixed powder by using acidic solution, performing drying and thermal treatment, adjusting the mol ratio of lithium to iron to phosphorus to carbon, and then performing ball milling, drying and roasting, thereby obtaining a lithium iron phosphate anode material. The method for efficiently recycling the waste lithium iron phosphate batteries provided by the invention is simple in process, low in production cost and quick in taking effect.

The invention relates to a method for recycling lithium carbonate from a lithium iron phosphate waste material, and belongs to the technical field of waste lithium oil battery recycling. The technical problem to be solved by the invention is that a method for recycling lithium carbonate from the lithium iron phosphate waste material is provided. The method provided by the invention comprises the following steps of: roasting the lithium iron phosphate waste material at 500-800 DEG C for 1-4 hours; adding sulfur into the roasted waste material and leaching, and filtering so as to obtain a mixed solution of lithium phosphate, iron phosphate and ferric sulfate; heating the mixed solution to 80-100 DEG C, and adjusting the pH value to 2-2.5, reacting for 1-4 hours, filtering, washing, and drying to obtain iron phosphate; adjusting the pH value of a filtrate obtained by filtering to be 6-7, adding calcium chloride and dephosphorizing, and filtering; and adjusting the pH value of the filtrate obtained by filtering to be 10-12 by sodium carbonate, reacting for 0.5-2 hours, filtering, washing, and drying so as to obtain battery grade lithium carbonate.

The invention discloses a carboxylic acid compound as well as a preparation method and application thereof. When the carboxylic acid compound is applied to extraction separation of metal ions, the separation coefficient is high, the reverse extraction acidity is low, the load rate is high, and the reverse extraction rate is high. The carboxylic acid compound serving as an extraction agent is highin stability and low in water solubility, so that the extraction process is stable, the environmental pollution can be reduced, and the cost is reduced. The carboxylic acid compound disclosed by the invention is low in cost, has a great application prospect and can be used for various systems such as ternary battery recovery and battery-grade nickel sulfate preparation.

The invention discloses a method for recovering valuable metals from waste lithium-ion power batteries and belongs to the field of recovery of the valuable metals. According to the method, discharging and calcination are performed in advance, a low-intelligent crusher and an impact crusher are adopted for secondary crushing, then crushed products enter a ball mill for scrubbing, screening and classification are performed by the aid of a vibrating screen, oversize products and undersize products are separated through beneficiation methods of magnetic separation, tables, regrinding and the like, and four products including iron, copper, aluminum and lithium cobalt oxide powder containingcarbon are obtained. The method has the advantages of environmental protection, low cost, reliable technology, easiness in industrial production and the like.

The invention discloses an automatic power source replacement system of an unmanned aerial vehicle. The automatic power source replacement system of the unmanned aerial vehicle comprises a machine body and a battery, and further comprises supporting legs installed at the two ends of the machine body, and a battery bin installed at the bottom of the machine body. An infrared sensor is arranged in the battery bin. A battery bin cover is arranged at the bottom of the battery bin and connected with an electromagnetic bin through an electromagnet. The battery is installed in the closed space defined by the battery bin and the battery bin cover. The automatic power source replacement system of the unmanned aerial vehicle further comprises supporting leg rails and a main rail. A battery cart is arranged on the main rail and provided with a battery recycling tank and a lifting device. A bin cover for replacement is placed on the lifting device. Batteries for replacement are arranged on the bin cover for replacement. The supporting leg rails and the main rail are connected with a battery station. The automatic power source replacement system of the unmanned aerial vehicle has the advantages that a power source can be replaced, and the cruising capacity of the unmanned aerial vehicle is high; by means of various assistant positioning devices, positioning is accurate, and the success rate of positioning is high; and the automatic power source replacement system is provided with the independent battery station, thereby being basically free of manual maintenance when arranged in the field.

The invention belongs to the field of lithium iron phosphate waste battery recovery, and particularly relates to a method for preparing a lithium iron phosphate positive electrode material from a waste lithium iron phosphate battery. The specific production steps are as follows: acid leaching, copper removal, aluminum removal, preparation of iron phosphate dihydrate, lithium precipitation and preparation of lithium iron phosphate. The method is simple in process, easy to operate and free of pollution, useful resources in the waste batteries are utilized to the maximum extent, and the product utilization rate is high; impurities such as aluminum, copper and calcium in the powder can be removed at low cost, various waste lithium iron phosphate batteries can be recycled, the application rangeis wide, and industrial large-scale production can be achieved conveniently; the recovered iron phosphate dihydrate and lithium phosphate are high in purity, the recovery rate of iron and phosphorusin the waste is greater than 95%, and the recovery rate of lithium is greater than 90%; all components of the waste lithium iron phosphate battery material are recycled, the prepared lithium iron phosphate is good in performance, and resource recycling is truly achieved.

The invention discloses a comprehensive recovery method for a nickel-hydrogen waste battery. The method comprises the following steps of: crushing the nickel-hydrogen waste battery and sieving the crushed battery by magnetic separation; preparing leaching solution which contains sulfuric acid and oxidant; throwing undersize powder into the leaching solution, increasing the temperature to 50 to 100 DEG C and leaching the mixture for 1 to 3 hours; performing solid-liquid separation, adjusting the pH value of filtrate to be 2 to 5 and adding water soluble sulfate to precipitate rare earth elements therein; and performing the solid-liquid separation and adding an extraction agent into the filtrate to remove impurities to obtain nickel and cobalt-containing sulfate solution. The comprehensive recovery method for the nickel-hydrogen waste battery can effectively recover various valuable metal elements in various nickel-hydrogen batteries. The extracted and purified nickel and cobalt-containing sulfate solution can be directly applied to the production of positive material spherical nickel hydroxide of the nickel-hydrogen battery. The recovery method has the advantages of low energy consumption in the recovery process, short route and good recovery benefit.

The invention provides a method for efficiently recovering lithium in waste and old lithium iron phosphate batteries. The method comprises that waste and old lithium iron phosphate batteries are roasted and sorted to form lithium-containing positive pole powder, lithium-containing positive pole powder and a calcium-containing alkaline solution undergo a reaction under conditions of oxidation so that iron and phosphate radical are converted into a water-insoluble compound and lithium is converted into water soluble lithium hydroxide, and the reaction products are filtered so that a lithium hydroxide solution is obtained and can be used for further preparation of lithium hydroxide or lithium carbonate products. The method replaces the conventional wet acid leaching method in waste and old lithium iron phosphate battery recovery and is free of a strong acid so that production of a large amount of high-salt waste water is avoided. The method realizes selective leaching of lithium, prevents iron impurities from entering the leaching liquid from the source, can produce a high-purity lithium product, has simple processes, utilizes chemical agents having wide sources, has simple process conditions, can prepare a high-purity lithium product through a one-step method, greatly improves recovery efficiency of waste and old lithium iron phosphate batteries and has a good industrial application prospect.

The invention belongs to the technical field of waste lead-acid storage battery recycling and discloses a recycling device of a waste lead-acid storage battery and a technological process of the recycling device of the waste lead-acid storage battery. The recycling device of the waste lead-acid storage battery aims to solve the problem that in the prior art, a battery crushing procedure and a screening procedure are separated, so that treatment time is long, and then the recycling efficiency of the waste battery is influenced. The recycling device comprises an installation frame. The top of the installation frame is fixedly provided with a fixing seat, and the top of the fixing base is fixedly provided with a recycling seat. The recycling seat is provided with a recycling cavity, and thetop of the recycling seat is fixedly connected with a feeding pipe. The feeding pipe communicates with the recycling cavity. Two driving motors are symmetrically and fixedly mounted on the inner wallof one side of the recycling cavity, and crushing shafts are fixedly connected to output shafts of the driving motors. The structure of the recycling device is simple, and the recycling device body integrates crushing, screening and collecting of the waste battery, so that the processing time of the waste battery is shortened, and the recycling efficiency of the waste battery is effectively improved.

The invention relates to a Controllable discharging and safe and automatic disassembling device for a waste hard-housing power lithium-ion battery. The device comprises 1, a charging device, 2, a controllable discharging device, 3, an end cover cutting device, 4, a partial atmosphere protecting device, 5, a housing cutting device, and 6, a core removing device. The device is clear in structure, high in disassembling efficiency, safe and controllable in disassembling process; the device is applicable to the field of recovery of the waste hard-housing power lithium-ion batteries.

The invention relates to a method for preparing battery grade lithium carbonate by recovering lithium from a lithium iron phosphate waste battery. The lithium iron phosphate waste battery is taken as a raw material to prepare the battery grade lithium carbonate. The method comprises the following steps: (1) carrying out battery disassembling; (2) carrying out disk granulation; (3) carrying out high-temperature roasting; (4) carrying out acidification leaching; (5) carrying out deep transition; (6) carrying out alkalization edulcoration; (7) carrying out lithium deposition by sodium carbonate. The method has the beneficial effects that the method for preparing the battery grade lithium carbonate by recovering the lithium from the lithium iron phosphate waste battery has the advantages of high recovery rate, environment friendliness, high product purity and the like, the main content of a product exceeds 99.5%, and meets battery grade product requirements, and the method has the characteristics of simple technology and low production cost and is suitable for industrial production.

The invention discloses a method for industrializedly recovering zinc and manganese in waste dry cells. The method comprises the following steps of: primarily shredding cells and secondarily shredding the cells; drying, screening and recovering partial black carbon powder, and recovering irony metal by magnetic separation; carrying out three-level crushing on broken fragments of the cells; and screening and recovering rest black powder, and winnowing to separate metal powder such as plastics and zinc. The method is a mechanical processing method, so that the waste cell recovery process cannot result in three wastes and secondary pollution and is operated in a full-automatic assembly line manner, the method is simple in process and low in production cost, is used for adsorbing and recovering through a self-made film and favorable for solving the problems that mercury easily volatilizes and is difficult to control and the like, and ensures high recovery rate of various valuable constituents.

The invention relates to a method for recovering lithium manganate battery anode material, belongs to the field of waste battery recovery technology, and aims at providing the method for recovering the lithium manganate battery anode material. The method for recovering the lithium manganate battery anode material comprises the following steps of: separating an aluminium foil from a positive plate of a lithium manganate battery, and heating the positive plate of the lithium manganate battery at the temperature of 300-600 DEG C for 1-4h; after that, separating the aluminium foil to obtain a mixture of lithium manganate anode material, a conductive agent and an adhesive; calcining the mixture at the temperature of 1000-12000 DEG C for 1-3h, and pelletizing; evenly mixing the pelletized mixture with the carbonaceous reducing agent, silica and lime according to the weight ratio of 100: (18-22): (13-17): (14-18); smelting for 1-3h by an electric furnace to obtain manganese-silicon alloy and slag; and carrying out acid leaching on the slag, and adding sodium carbonate solution into the slag for precipitating and filtering to obtain the lithium carbonate.

The present invention relates to a method for recovering lead from waste lead acid batteries. The electrolytic device adopted comprises an electrolytic bath, dilute alkali electrolyte, an anode, a baffle and a pasted cathode. The anode, the baffle and the pasted cathode are arranged in a tight assembly structure. The pasted cathode is prepared from waste lead powder processed by reduction, water and paste. Lead is reduced from the pasted cathode with a solid phase reduction electrolytic method. Besides the advantage of no pollution, the present invention also has the advantages of short electrolysis time, low energy consumption and low production cost due to the characteristics of low electrolysis voltage, large current density and high current efficiency.

The invention discloses an uninterrupted power unmanned aerial vehicle (UAV) capable of automatically replacing a battery. The uninterrupted power UAV comprises a UAV body, a metal contact point, an uninterrupted power parking apron, a power supply unit, a UAV battery, an uninterrupted power plug, an old battery recycling area and a battery replacing component, wherein the power supply unit is arranged below the uninterrupted power parking apron; the uninterrupted power plug is arranged on the uninterrupted power parking apron; the metal contact point is arranged at the bottom of an undercarriage of the UAV body; the UAV body is parked on the uninterrupted power parking apron so that the metal contact point is adapted to socket with the uninterrupted power plug and supplies the power for the UAV body; a battery replacing hollow part is arranged on the uninterrupted power parking apron; the UAV battery is installed at the bottom center of the UAV body; the battery replacing component and the old battery recycling area are respectively arranged below the uninterrupted power parking apron; and the UAV battery is dismounted through the battery replacing component and conveyed to the old battery recycling area. The battery is automatically replaced without interrupting the power, the time of replacing the battery of the UAV is greatly saved, and the usage of the UAV is rarely influenced.

The invention relates to a method for recycling lithium in waste lithium-ion batteries with a reduction roasting-water quenching method, and belongs to the technical field of waste battery recovery. The method includes the following steps that the waste lithium-ion batteries are subjected to mechanical crushing and screening after being discharged so that positive electrode waste powder can be obtained; the positive electrode waste powder and a reducing agent are evenly mixed to obtain a mixture; the mixture is subjected to reduction roasting; and the mixture subjected to reduction roasting isthrown into water quickly for water quenching, lithium in the mixture enters the water to obtain a lithium-rich solution, and the recovery rate of the lithium in the waste lithium-ion batteries is 92%-98%. By adoption of the method, the lithium in the waste lithium-ion batteries can be efficiently and selectively separated, the technological process is simple, operation is convenient, and the problems that prior technological processes are complex, and investment cost and recovery cost are high are solved.

The invention discloses a method for recycling multiple components of a waste lithium iron phosphate battery. The method comprises the following steps of breaking a shell of the discharged waste lithium iron phosphate battery, disassembling and separating, treating the battery core to obtain a solvent recovery solution, crushing and sorting the battery core to obtain lithium iron phosphate coarse powder, copper powder and aluminum powder, adding the lithium iron phosphate coarse powder into an acid solution to react, filtering to obtain an acid leaching solution and carbon residues, washing the carbon residues with water, and drying to obtain high-carbon graphite, adjusting the PH value of the acid leaching solution, adding a reducing agent to remove copper, and filtering to obtain a copper-removed solution and copper slag, adding an oxidizing agent and a proper amount of phosphorus source into the copper-removed solution to obtain ferric orthophosphate, adding alkali liquor into the iron precipitation liquid to obtain aluminum-removed liquid and aluminum slag, adding alkali liquor into the aluminum precipitation liquid to obtain alkalized liquid and alkaline slag, and evaporating and concentrating the alkalized solution to obtain a lithium-rich solution, and adding the lithium-rich solution into a sodium carbonate solution to obtain lithium carbonate. The invention relates to the technical field of battery recycling, and particularly provides a method for recycling multiple components of a waste lithium iron phosphate battery.

A process has been developed in order to recover and recycle the metals present in spent batteries, including alkaline spent batteries alone or mixed with other types of spent batteries. This method shows a good potential in terms of metals recoveries efficiencies and economic feasibility. Firstly, the spent batteries are crushed (optionally after having been frozen in the case of spent batteries of mixed types). Then, the undesirable parts (plastics, steel cases, papers, etc.) are removed by screening. The collected powder, containing the metals, is mixed with a solution of sulfuric acid in the presence of a reducing agent. The solid/liquid separation is carried out by filtration and the leachate is purified in order to selectively recover the metals. The purification steps consist of: a) recovering Zn by solvent extraction followed by an electrowinning process; b) simultaneously recovering Mn and Cd by solvent extraction process; c) selectively recovering Cd from the mixture solution of Cd and Mn by electrowinning process; d) precipitating Mn from a pure solution of MnSO₄ in a carbonate form; e) removing the impurities present in the effluent by solvent extraction in order to obtain a pure NiSO₄ solution; f) precipitating Ni from a NiSO₄ solution in a carbonate form.

The invention belongs to the recycling field of a battery, and specifically discloses a recycling method of a waste lithium battery with high resource recycling rate and green and environment protection properties. The recycling method of the waste lithium battery comprises the steps of performing pretreatment, smashing and drying on the lithium battery, performing separation on battery fragmentsand performing processing on the separated objects. By performing electrolyte filtering and recycling on the smashed lithium battery, and by performing condensing and electrolyte collecting on the exhausted air of drying equipment, the electrolyte recycling rate is improved, and sewage and waste gas processing quantity are decreased; meanwhile, by virtue of the drying equipment for drying, complete separation of the electrolyte on the battery fragments can be facilitated; the dried battery fragments are subjected to stirring and screening treatment in sequence, so that recycling of battery pole piece current collectors, noble and rare metals and other resources from the lithium battery can be facilitated separately; and in addition, the recycling rate is relatively high, and pollution in the whole recycling process is relatively low.

The invention discloses a method for regenerating lithium iron phosphate by a leaching, spray drying and solid phase method, and belongs to the field of waste battery recycling. The method comprises the steps of discharging a waste lithium iron phosphate battery in a salt solution, then disassembling to separate a positive pole piece; separating the positive pole piece obtained in the previous step to obtain an aluminum foil and a waste lithium iron phosphate positive electrode, adding the waste lithium iron phosphate positive electrode powder into an acid solution to leach so as to obtain a leachate; additionally adding a lithium source, an iron source and a phosphorus source to the leachate, and adding a carbon source and a metal cation doped compound to prepare a precursor solution; carrying out spray drying on the precursor solution to obtain precursor powder; and carrying out two-stage calcining on the precursor powder in the atmosphere of argon or argon-hydrogen mixture to obtainmetal cation doped regenerated lithium iron phosphate. The regenerated lithium iron phosphate prepared according to the method of the invention has the advantages of stable structure, high specific capacity and excellent cycle performance and rate performance.

The invention discloses an aluminum-air battery recycling method. The method includes the following steps that used waste aluminum-air batteries are recycled; electrolyte in the recycled aluminum-air batteries is pumped into a settling pond, precipitator is added, the mixture is still standing and precipitated, and precipitate and supernate are collected; the pretreated electrolyte precipitate is purified and converted to obtain pure aluminum oxide for recycling; free aluminum ions of the supernate generated after pretreatment of the electrolyte are removed, and after the aluminum ions are subjected to sedimentation treatment, aluminum-air battery electrolyte capable of being recycled is obtained; battery bodies without the electrolyte are detached, plastic shells and metal parts are obtained, plastic is recycled according to the national standard GB/T 30102-2013, and metal is recycled according to corresponding metal national standards to be reused; obtained oxygen catalyst electrodes are processed to obtain a catalyst containing nickel oxide and manganese oxide, and then the obtained catalyst containing nickel oxide and manganese oxide is prepared into new oxygen catalyst electrodes of aluminum-air batteries.