METHOD OF RECYCLING LITHIUM MANGANESE BATTERY ANODE MATERIAL

摘要

The present invention relates to the technical field of waste battery recycling. Disclosed is a method for recycling lithium manganese battery anode material, the method comprising the step of separating aluminum foil from a lithium manganese battery anode plate, in particular, heating the lithium manganese battery anode plate at 300-600℃ for 1-4 hrs; separating the aluminum foil therefrom to obtain a mixture of a lithium manganese anode material, a conductive agent, and a bonding agent; calcining the mixture at 1000-1200℃ for 1-3 hrs for pelletizing; mixing uniformly the pelletized mixture with carbonaceous reductant, silica, and lime according to a weight ratio of 100:18-22: 13-17: 14-18; smelting the mixture in an electric furnace for 1-3 hrs to obtain a manganese-silicon alloy and slag; conducting acid leaching on the slag to obtain a lithium-containing solution; and then adding a sodium carbonate solution, precipitating, and filtrating to obtain lithium carbonate.