METHOD FOR RECOVERING LITHIUM FROM ALUMINUM ELECTROLYSIS WASTE CATHODE

A method for recovering lithium from an aluminum electrolysis waste cathode, comprising: crushing waste cathode, and then washing and filtering the waste cathode to respectively obtain a first filtrate and a first filter residue; evaporating and crystallizing the first filtrate to obtain a sodium fluoride product; adding a binder into the first filter residue, carrying out mixing and forming, and then carrying out calcination and collection to obtain a graphite product and collected dust powder; carrying out lithium salt extraction on the collected dust powder by using pure water, and filtering to obtain a second filtrate and a second filter residue; drying the second filter residue to obtain a cryolite product; and adding the second filtrate into a carbonate solution to implement a lithium precipitation reaction to obtain a lithium carbonate product. L'invention concerne un procédé de récupération de lithium à partir d'une cathode de déchets d'électrolyse d'aluminium, consistant à : broyer des déchets de cat