| abstract |
(57) [Summary] [PROBLEMS] A used non-aqueous solvent battery can be safely treated, and valuable components such as lithium constituting the battery can be safely treated. Provided is a method for treating a used non-aqueous solvent battery that can be separated and recovered in a reusable form. [Constitution] A crushing step of crushing in a freezing and low-temperature atmosphere having a melting point lower than the melting point of the electrolyte of a non-aqueous solvent battery, an organic solvent extraction step of extracting the electrolyte from the crushed material and separating it into solids, And an organic solvent, and an electrolyte separation step for separating solids into valuables. |