Method for recovering aluminum foil and boehmite from lithium ion battery

The invention relates to a method for recovering aluminum foil and boehmite from a lithium ion battery. The method comprises the following steps: obtaining a current collector aluminum foil with an insulating coating in the lithium ion battery; performing heat treatment on the current collector aluminum foil to decompose the insulating coating to obtain a material; and mixing the material with a solution containing an additive, and then carrying out ultrasonic treatment so as to decompose the residual insulating coating and completely separate the insulating coating from the aluminum foil, thereby obtaining the aluminum foil and a solution containing high-purity boehmite. The technical problem that effective separation of the insulating coating and the current collector from the lithium ion battery is difficult to realize in the prior art is solved. 本申请涉及一种从锂离子电池中回收铝箔和勃姆石的方法，所述方法包括：得到锂离子电池中的带有绝缘涂层的集流体铝箔；将所述集流体铝箔进行热处理，以实现所述绝缘涂层的分解，得到物料；将所述物料与含添加剂的溶液进行混合，后进行超声处理，以实现残留的所述绝缘涂层的分解，以及所述绝缘涂层与所述铝箔的完全分离，得到铝箔和含高纯勃姆石的溶液