Method for processing lithium-ion battery waste
AssigneeMec Company Ltd.
InventorsKengo MURAGISHI, Keisuke MATSUMOTO
Life of this patent
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Abstract
A method for processing a lithium-ion battery waste by hydrometallurgical processing of the lithium-ion battery waste to obtain a leachate in which at least cobalt and nickel are dissolved, the method comprising: a hydrometallurgical processing step of adding at least one compound (1) selected from the group consisting of ammonia and a salt thereof, and an amine compound and a salt thereof to the lithium-ion battery waste and mixing them to obtain the leachate in which at least the cobalt and the nickel are dissolved; and a solid-liquid separation step of removing at least a part of metals not dissolved in the leachate by solid-liquid separation after the hydrometallurgical processing step.
Claims8
A method for processing a lithium-ion battery waste by hydrometallurgical processing of the lithium-ion battery waste to obtain a leachate in which at least cobalt and nickel are dissolved, the method comprising:
- a hydrometallurgical processing step of adding at least one compound (1) selected from the group consisting of a chelating amine compound having two or more amino groups and a hydrochloride thereof to the lithium-ion battery waste and mixing them to obtain the leachate in which at least the cobalt and the nickel are dissolved;
- and
- a solid-liquid separation step of removing at least a part of metals not dissolved in the leachate by solid-liquid separation after the hydrometallurgical processing step.
Dependencies are inferred from the claim text.