The Recovery of Useful Materials from Scrapped Secondary Batteries by Physical Separation Techniques

摘要

For effective reuse and recycling of valuable materials contained in Nickel/metal hydride batteries, physical separation of a cathode electrode from an anode hydrogen adsorption material is essential as a preliminary step to a hydrometallurgical recycling process. In this study, selective crushing at low temperature and magnetic separation were applied for bookshelf type NiMH batteries and an optimum treatment flow with 3-stage magnetic separation process was proposed and demonstrated.