Lithium-ion batteries recycling process

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United States of America Patent

PATENT NO 11508999
APP PUB NO 20210376399A1
SERIAL NO

16648793

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Abstract

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It is provided a process for recycling lithium ion batteries comprising shredding the lithium-ion batteries and immersing residues in an organic solvent; feeding the shredded batteries residues in a dryer producing a gaseous organic phase and dried batteries residues; feeding the dried batteries residues to a magnetic separator removing magnetic particles; grinding the non-magnetic batteries residues; mixing the fine particles and an acid producing a metal oxides slurry and leaching said metal oxides slurry; filtering the leachate removing the non-leachable metals; feeding the leachate into a sulfide precipitation tank; neutralizing the leachate; mixing the leachate with an organic extraction solvent; separating cobalt and manganese from the leachate using solvent extraction and electrolysis; crystallizing sodium sulfate from the aqueous phase; adding sodium carbonate to the liquor and heating up the sodium carbonate and the liquor producing a precipitate of lithium carbonate; and drying and recuperating the lithium carbonate.

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Patent Owner(s)

Patent OwnerAddress
LITHION TECHNOLOGIES INC9388 BOUL DU GOLF ANJOU H1J 3A1

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Couture, Benoit Anjou, CA 1 7
Gagne-Bourque, Charles Anjou, CA 1 7
Morin, Dominique Anjou, CA 5 64
Nadeau, Emilie Anjou, CA 1 7

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