公开(公告)号：US20220352570A1

公开(公告)日：2022-11-03

申请号：US17625788

申请日：2020-07-24

申请人： BASF SE

发明人： Wolfgang ROHDE ,  Birgit GERKE ,  Kerstin SCHIERLE-ARNDT ,  Matthias VOGES ,  Regina VOGELSANG ,  Fabian SEELER ,  Gareth SMITH ,  Torben ADERMANN

IPC分类号： H01M10/54 ,  C22B26/12 ,  C22B7/00 ,  C22B23/02

摘要： A process for the recovery of one or more transition metals and lithium from waste lithium ion batteries or parts thereof is disclosed. The process comprising the steps of (a) providing a particulate material containing a transition metal compound and/or transition metal, wherein the transition metal is selected from the group consisting of Ni and Co, and wherein further at least a fraction of said Ni and/or Co, if present, are in an oxidation state lower than +2, e.g. in the metallic state; which particulate material further contains a lithium salt; (b) treating the material provided in step (a) with a polar solvent and optionally an alkaline earth hydroxide; (c) separating the solids from the liquid, optionally followed by a solid-solid separation step; and (d) treating the solids containing the transition metal in a smelting furnace to obtain a metal melt containing Ni and/or Co provides good separation of transition metal as alloy and of lithium in high purity.