公开(公告)号：US20220136084A1

公开(公告)日：2022-05-05

申请号：US16956516

申请日：2018-12-10

Applicant: BASF SE

Inventor： Wolfgang ROHDE ,  Michael ZEILINGER ,  Torben ADERMANN ,  Sabine WEIGUNY ,  Fabian SEELER ,  Kerstin SCHIERLE-ARNDT ,  Thomas Michael RYLL

IPC: C22B47/00 ,  H01M10/54 ,  C25C1/02 ,  C22B7/00 ,  C22B3/00

Abstract: Process for the recovery of transition metal from cathode active materials containing nickel and lithium, wherein said process comprises the steps of (a) treating a lithium containing transition metal oxide material with a leaching agent (preferably an acid selected from sulfuric acid, hydrochloric acid, nitric acid, methanesulfonic acid, oxalic acid and citric acid), (b) adjusting the pH value to 2.5 to 8, and (c) treating the solution obtained in step (b)with metallic nickel, cobalt or manganese or a combination of at least two of the foregoing.

公开(公告)号：US20210147960A1

公开(公告)日：2021-05-20

申请号：US17046766

申请日：2019-04-01

Applicant: BASF SE

Inventor： Wolfgang ROHDE ,  Torben ADERMANN ,  Thomas Michael RYLL ,  Kerstin SCHIERLE-ARNDT ,  Fabian SEELER ,  Sabine WEIGUNY ,  Michael ZEILINGER

IPC: C22B26/12 ,  C22B1/00 ,  C22B7/00 ,  C22B3/44

Abstract: Process for the recovery of transition metal from spent lithium ion batteries containing nickel, wherein said process comprises the steps of (a) heating a lithium containing transition metal oxide material to a temperature in the range of from 400 to 1200° C., (b) treating said heat-treated material with water, (c) treating the solid residue from step (b)with an acid selected from sulfuric acid, hydrochloric acid, nitric acid, methanesulfonic acid, oxalic acid and citric acid, (d) adjusting the pH value to 2.5 to 8, (e) removing compounds of Al, Cu, Fe, Zn or combinations of at least two of the foregoing from the solution or slurry obtained in step (d).