| abstract |
Provided is a method for recovering valuable materials from lithium ion secondary cells, including: a heat treatment step for heating, to a temperature of 250ºC to 550ºC, lithium ion secondary cells having a positive electrode containing aluminum as the positive electrode current collector, and a negative electrode containing copper as the negative electrode current collector, to obtain a heated material; a sorting step for sorting the positive electrodes and the negative electrodes in the heated material; a crushing step for respectively crushing the positive electrodes and the negative electrodes sorted in the sorting step, to respectively obtain a crushed positive electrode material and a crushed negative electrode material; a first sieve sorting step for sieving out the crushed positive electrode material and recovering the aluminum; and a second sieve sorting step for sieving out the crushed negative electrode material and recovering the copper. |