METHOD FOR RECOVERING RAW AND AUXILIARY MATERIALS IN PRODUCTION OF LITHIUM BIS(FLUOROSULFONYL)IMIDE

The present application relates to a method for recovering raw and auxiliary materials in the production of lithium bis(fluorosulfonyl)imide. The method includes one or more different recovery sections A, B, C, D and/or E, corresponding to the recovery and post-treatment of the raw and auxiliary materials such as triethylamine, a fluoride ion, an ester solvent, and a crystallization liquid respectively used in the production of lithium bis(fluorosulfonyl)imide. The method for recovering raw and auxiliary materials of the present application enables the production of lithium bis(fluorosulfonyl)imide to have significantly improved economic efficiency and environmental protection.