SEPARATION AND RECOVERY METHOD FOR POSITIVE AND NEGATIVE ELECTRODE MATERIALS OF SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a separation and recovery method for automatically separating and recovering positive and negative electrode materials from a waste nickel hydrogen battery without any change in quality and in shape. SOLUTION: This method comprises a crushing and cutting means 11, a wind force classification means 12A, a wet classification means 12B, a weak flow selection means 14 for separating an electrode material slurry 26 into positive and negative electrode materials, a dehydrator and a waste water processing means 17. The wind force classification means 12A and the wet classification means 12B eliminate materials other than the electrode material from a powder mixing crushed material of a nickel hydrogen battery to select the electrode material slurry 26. Then, while the electrode material slurry 26 is poured into the weak flow selection means 14 along with weak flow water, positive and negative electrode material powders are separated and recovered.