Method for selectively recycling and separating valuable metals and aluminum foil from scrapped automobile power ternary batteries

• Main Authors: GU WEIXING, LUO XINGMIN, SU RUIJING, GAO TING, FAN DANDAN, YUAN HAO, DAI JUE, GUAN JIE, ZHU QIUJIE, GUO YAOGUANG, GAO GUILAN
• Format: Patent
• Language: Chinese; English
• Published: 08.03.2019
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTRICITY; FERROUS OR NON-FERROUS ALLOYS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; PRETREATMENT OF RAW MATERIALS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a method for selectively recycling and separating valuable metals and aluminum foil from scrapped automobile power ternary batteries. The method comprises the following steps that after the scrapped automobile power ternary batteries are discharged, cutting edge treatment is conducted by adopting a cutting machine, positive pole pieces are separated, and cut into small oneswith a proper size, then leaching reaction is conducted in a water bath constant-temperature oscillator so as to obtain the high-purity aluminum foil, and meanwhile, selective leaching is also conducted to obtain valuable metal cobalt, manganese and lithium. According to the method, special reducibility and selectivity of organic acid are utilized, the aluminum foil and positive pole active substances are separated in one step, meanwhile, the target metal in the positive pole active substances is leached to the maximum, the high-purity aluminum foil is recycled, the use of a reducing agent isavoided, the recycling pr