PROCESS FOR THE EXTRACTION OF LITHIUM COMPOUNDS FOUND IN SECONDARY LITHIUM-ION BATTERIES

摘要

To proceed with the separation of lithium compounds, this process starts with the extraction of lithium from electrodes and separators by immersing them into a mixture of commercial ethanol and acetone at 5%. Preferably, after two hours the extraction will be completed, the electrodes, separators, nickel contacts, aluminum contacts and plastic tapes are removed and they are used subsequently for recycling and the solution is filtered in order to obtain the lithium compound, which is then dried and weighed. The filtrate, besides the lithium compounds, the alcohol solution, acetone, solvent residues, battery electrolytes are obtained. Apart from that, the filtrate obtained from filtering (alcohol, acetone and batteries electrolyte residues) is distilled, obtaining alcohol at 960GL that can be used again in the extraction process of lithium compounds.