公开(公告)号：US20220274841A1

公开(公告)日：2022-09-01

申请号：US17597482

申请日：2020-07-24

Applicant: BASF SE

Inventor： Wolfgang ROHDE ,  Birgit GERKE ,  Kerstin SCHIERLE-ARNDT ,  Torben ADERMANN ,  Matthias VOGES ,  Regina GELSANG

IPC: C01D15/00 ,  C22B26/12 ,  C22B7/00 ,  C22B3/12 ,  H01M10/54 ,  C01D15/08

Abstract: A process for the recovery of 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 Mn, 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, and at least a fraction of said Mn, if present, is manganese(II)oxide; which particulate material further contains a lithium salt and a fluoride salt, and which particulate material optionally contains calcium provided that the element ratio calcium to fluorine is 1.7 or less or is zero; (b) treating the material provided in step (a) with a polar solvent and an alkaline earth hydroxide; and (c) separating the solids from the liquid, optionally followed by washing the solid residue with a polar solvent such as water provides good separation of lithium in high purity, and recovery of valuable transition metals.

公开(公告)号：US20220251681A1

公开(公告)日：2022-08-11

申请号：US17625753

申请日：2020-07-24

Applicant: BASF SE

Inventor： Wolfgang ROHDE ,  Birgit GERKE ,  Regina VOGELSANG ,  Matthias VOGES ,  Kerstin SCHIERLE-ARNDT ,  Fabian SEELER ,  Torben ADERMANN

IPC: C22B26/12 ,  C22B23/00 ,  C22B1/00 ,  C22B3/12 ,  C22B7/00

Abstract: 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 way to dissolve at least part of the Ni and/or Co, typically using a mineral acid, provides good separation of lithium in high purity and of transition metal useful for the production of battery cathode active materials.

公开(公告)号：US20240294463A1

公开(公告)日：2024-09-05

申请号：US18268115

申请日：2021-12-08

Applicant: BASF SE

Inventor： Michael Klemens MUELLER ,  Matthias VOGES ,  Markus HARTMANN ,  Frank JAEKEL ,  Astrid SCHMIDT

IPC: C07C227/44

CPC classification number: C07C227/44

Abstract: Process for making a solid alkali metal salt (A) of an aminocarboxylate complexing agent, said process comprising the steps of



(a) providing a 40 to 80% by weight aqueous solution or slurry comprising salt (A),
(b) optionally, heating said slurry or solution to a temperature in the range of from 50 to 150° C.,
(c) introducing the slurry or solution from step (a) or, if applicable, step (b) into an essentially horizontal cylindrical drying apparatus containing a stirring element that rotates around an essentially horizontal axis and that is charged with solid particles of salt (A), and
(d) removing most of the water by evaporation,
(e) removing solid salt (A) as granule.

公开(公告)号：US20230092844A1

公开(公告)日：2023-03-23

申请号：US17800758

申请日：2021-02-11

Applicant: BASF SE

Inventor： Matthias VOGES ,  Lothar SEIDEMANN ,  Anika RITTER ,  Astrid SCHMIDT ,  Markus HARTMANN ,  Hartmut KOENIG ,  Frank JAEKEL ,  Rou Hua CHUA ,  Michael Klemens MUELLER

IPC: C07C227/42

Abstract: Process for making solid methylglycine diacetate (MGDA) alkali metal salt (A), said process comprising the steps of (a) providing a 40 to 60% by weight aqueous solution of said salt (A) having a temperature in the range of from 50 to 90° C., (b) crystallizing salt (A), (c) removing said crystalline salt (A) from the mother liquor by filtration, and (d) subjecting the water containing filter cake from step (c) to an extrusion step.

公开(公告)号：US20220352570A1

公开(公告)日：2022-11-03

申请号：US17625788

申请日：2020-07-24

Applicant: BASF SE

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

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

Abstract: 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.