| abstract |
The valuables recovery method of the present invention is a thermal decomposition step of reducing a lithium compound of a positive electrode active material to a magnetic oxide while thermally decomposing a combustible component by thermally treating a lithium ion battery after the discharge step, the lithium ion battery after discharge. The lithium ion battery is pulverized to a size for wind sorting, a part of the magnetic oxide is left in the aluminum foil, and a shredding step of separating the remaining magnetic oxide from the aluminum foil, and the product being classified to classify the product and the product below the sieve. A separation step of recovering the magnetic oxide and the negative electrode active material components contained in the product under the sieve, a wind screening step of separating the product from the sieve into a heavy product and a light product, and the magnetic oxide remaining from the hard product. Magnetic screening ball for collecting and recovering aluminum foil as self-adhesive material and collecting copper foil for non-adhered material Have positive. |