A method of recovering a cathode active material precursor according to an embodiment of the present invention includes preparing a cathode active material mixture including a lithium composite oxide, separating lithium from the cathode active material mixture to form a preliminary transition metal precursor, acid-treating the preliminary transition metal precursor to form a complex transition metal salt solution, and adding an acidic extractant to the complex transition metal salt solution and then adding a basic compound to recover a transition metal precursor, and thus the extraction rate of transition metals can be improved.

Provided is a method for processing electronic and electrical device component scrap, which can accurately and efficiently sort electronic and electrical device component scrap. The method for processing electronic and electrical device component scrap includes a separation step of separating non-metal objects 1b or metal objects 1a.sub.1, 1a.sub.2 from electronic and electrical device component scrap 1 containing the metal objects 1a.sub.1, 1a.sub.2 and the non-metal objects 1b using a sorter 10 comprising a metal sensor 2, a color camera 3, an air valve 4, and a conveyor 5, wherein a fixed distance is provided between the metal objects 1a.sub.1, 1a.sub.2 adjacent to each other so as to prevent the non-metal objects 1b between the metal objects 1a.sub.1, 1a.sub.2 from being erroneously detected, when detecting the metal objects 1a.sub.1, 1a.sub.2 in the electronic and electrical device component scrap 1 by the metal sensor 2.

In a method for recovering active metals from a lithium secondary battery according to exemplary embodiments, a cathode active material mixture including a lithium composite oxide may be reacted with a reducing reaction gas under a pressurized condition and washed with water. In this case, a large amount of the cathode active material mixture may be treated within a shortened process time, and the active metal may be recovered with high yield and high efficiency.

A method for breaking down electrochemical energy storage devices in conjunction with a subsequent reclamation of recyclable materials contained therein as secondary raw materials. The devices are broken down by a thermal treatment in a negative pressure environment in a process chamber to remove electrolyte and reactive substances, before the thermally treated material is subjected to downstream processing, by which the secondary raw materials are separated from one another. After introducing a batch of storage devices, in a first process step, the process chamber is evacuated with simultaneous heating of the devices to a first temperature level such that electrolytes in the devices evaporate and, due to the resulting vapor pressure, the devices are opened, wherein produced process gases containing electrolytes in the vapor phase are withdrawn from the process chamber. The devices are then heated to a second temperature level for further breakdown with a simultaneous pressure increase in the process chamber in a reducing atmosphere, before the chamber is ventilated and cooled and the broken down devices are removed, wherein the pressure increase is monitored during this second process step so that it increases continuously. Also, a thermal treatment system for removing electrolytes and reactive substances in electrochemical energy storage devices, thus for pyrolytically breaking them down.

The present application provides a system and method for discharging and processing of lithium ion batteries to extract one or more metals. The extracted metals are in a powder form that can be reused at second stage processing facilities. The extracted metal powder can include lithium and at least one of cobalt, nickel, manganese, and carbon.

Methods for obtaining solid products and combustible gas using aluminum waste are disclosed. In some embodiments, a method for obtaining solid products and combustible gas using aluminum waste may comprise: obtaining a reactive mass, the reactive mass comprising aluminum remelting waste or a derivative thereof; applying a solvent to the reactive mass to generate a solution and a first solid product; separating the solution from the first solid product; applying a reactant to at least a portion of the first solid product to initiate a reaction, the reactant being different from the solvent, the reaction generating a combustible gas and a second solid product; and separating the reactant from the second solid product.

The invention discloses a method for cracking slag and smelting soot of the waste circuit board, belongs to the field of comprehensive recycling of valuable elements from typical soot of waste circuit boards, and particularly relates to a method for cracking slag and smelting soot of the waste circuit board for debromination and comprehensive recovery of copper and zinc. The method includes the following steps of: crushing and sorting, mixture roasting, reinforced leaching, replacement and silver precipitation, sulfuration and copper precipitation, and evaporation crystallization. Compared to traditional recycling technology, the purpose of treating two kinds of solid waste in a coupling mode through one recycling technology is achieved. Through mixed sulfuric acid roasting, the requirement of bromide synergistic removal of the waste circuit board cracking slag and smelting soot is met, and the purpose of selective conversion of copper and zinc is achieved.

Disclosed are methods to produce Thermal Barrier Coating (TBC) products using materials recycled from TBC waste. These methods include ways to produce zirconium and rare earth chemicals and raw materials appropriate for producing TBC materials.

Provided is a method for separating lithium from a lithium solution containing lithium by 200 mg/L or more and fluorine by 20 mg/L or more, the method including: a first removal step of adding a first component, which solidifies the fluorine contained in the lithium solution, to the lithium solution and removing the fluorine solidified to obtain a F-removed liquid; and a second removal step of adding a second component, which solidifies the first component remaining in the F-removed liquid, to the F-removed liquid and removing the first component solidified to obtain a first component-removed liquid.

Disclosed is a method for anaerobically cracking a power battery, which includes the following steps: disassembling a waste power battery to obtain a battery cell; taking out a diaphragm from the battery cell for later use, and pyrolyzing the battery cell to obtain electrode powder; extracting nickel, cobalt and manganese elements from the electrode powder with an extraction buffer, filtering, taking the filtrate, then adjusting the filtrate with a nickel solution, a cobalt solution and a manganese solution to obtain a solution A, adding the solution A dropwise into ammonium hydroxide under stirring, and then adding an alkali solution under stirring to obtain a solution B; subjecting the solution B to a hydrothermal reaction, filtering, and roasting to obtain a catalyst, such that a chemical formula of the catalyst is Ni.sup.2+.sub.1-x-yCo.sup.2+.sub.xMn.sup.2+.sub.yO, where 0.25≤x<0.45, 0.25≤y<0.45.