| abstract |
Provided is a method for recovering valuable materials such as cobalt and nickel from a lithium ion secondary battery at a high recovery rate and having a simple process. A roasting step of roasting a lithium ion secondary battery at a roasting temperature of 400 ° C. or higher to obtain a roasted product, a pulverizing step of pulverizing the roasted product by striking to obtain a pulverized product, and the pulverization A method for recovering valuable materials from a lithium ion secondary battery, comprising: sieving the materials and sorting them on a sieve and under a sieve to obtain a recovered material containing valuable materials under the sieve. [Selection] Figure 2 |