Method of recovering lithium from batteries

Details Method of recovering lithium from batteries Method of recovering lithium from batteries

1999-03-16

2000-09-19

Chaney, Carol

Chemistry: electrical current producing apparatus, product, and

Regenerating, salvage or repair feature other than only...

4292311, 4231795, H01M 1054

Patent

active

061209279

ABSTRACT:
Disclosed is a method of recovering lithium from a battery containing lithium such as a lithium ion secondary battery. The lithium-containing member of the battery is dissolved with an acidic liquid, and an alkaline material is added to the obtained lithium solution to transform a transition metal which may be dissolved in the lithium solution into a metal hydroxide precipitation, whereby the metal hydroxide precipitate is separated from the lithium solution. The lithium solution is then dried to obtain a solid containing the lithium, and the lithium is eluted from the solid with a non-aqueous solvent. Retrieving lithium from the lithium eluate is accomplished by use of a cation exchanger.

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patent: 4637928 (1987-01-01), Zajac, Jr. et al.
patent: 5352270 (1994-10-01), Shackle
patent: 5491037 (1996-02-01), Kawakami
patent: 5888463 (1999-05-01), McLaughlin et al.

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