METHOD FOR SEPARATING POSITIVE-POLE ACTIVE SUBSTANCE AND METHOD FOR RECOVERING VALUABLE METALS FROM LITHIUM ION BATTERY

摘要

The purpose of the present invention is to improve the recovery rate of a positive-pole active substance and to prevent valuable metal recovery loss when the positive-pole active substance is separated from a lithium ion battery. By means of the present invention, a lithium ion battery is dismantled and the resulting battery scraps are stirred in a surfactant solution to separate a positive-pole active substance from a positive pole substrate. Moreover, preferably an alkali solution is added to the positive pole material contained in the battery scraps, the positive pole substrate to which the positive-pole active substance adheres is dissolved, a slurry containing the positive-pole active substance is obtained, a surfactant solution is added to this slurry, and the positive-pole active substance is dispersed in the slurry to thereby separate the positive-pole active substance and the alkali solution.