US 12,412,942 B2Granted

Battery recycling by reduction and carbonylation

AssigneeBASF SE

InventorsWolfgang Rohde, Torben Adermann, Kerstin Schierle-Arndt, Nuria Huguet Subiela, Andreas Kempter, Birgit Gerke

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Abstract

The present invention relates to a process for the recovery of transition metals from battery materials comprising (0.1) providing a battery material which comprises oxidic nickel and/or cobalt compounds, (1.1) heating the battery material above 350° C. to yield a reduced material which contains nickel and/or cobalt in elemental form, (2.1) carbonylating the reduced material with carbon monoxide optionally in the presence of a reactive gas to yield a solid carbonylation residue and a volatile carbonyl which comprises nickel and/or cobalt carbonyl containing compounds, and (3.1) separating the volatile carbonyl from the solid carbonylation residue by evaporation.

Claims15

Dependent claims

A process for recovering transition metals from a battery material comprising:

(0.1) providing the battery material, wherein the battery material comprises oxidic nickel compounds, oxidic cobalt compounds, or combinations thereof,
(1.1) heating the battery material above 350° C. to yield a reduced material comprising nickel in elemental form, cobalt in elemental form, or combinations thereof,
(2.1) carbonylating the reduced material with carbon monoxide, optionally in the presence of a reactive gas, to yield a solid carbonylation residue and a volatile carbonyl, wherein the volatile carbonyl comprises nickel carbonyl containing compounds, cobalt carbonyl containing compounds, or combinations thereof, and
(3.1) separating the volatile carbonyl from the solid carbonylation residue by evaporation.

1 more element

Dependencies are inferred from the claim text.