Method for recovering active material from waste battery material
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United States of America Patent
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Jul 19, 2016
Grant Date -
Dec 5, 2013
app pub date -
Feb 13, 2012
filing date -
Feb 15, 2011
priority date (Note) -
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Abstract
Method of recovering active material from waste battery materials comprises: (1) an electrode material mixture recovery step of separating an electrode from the waste battery material to recover an electrode material mixture including the active material, a conductive material, and a binder from the electrode; (2) an activation agent mixing step of mixing an activation agent including one or more alkali metal compounds with the recovered electrode material mixture; (3) an activation step of heating the obtained mixture to a retention temperature not less than a melting start temperature of the activation agent to activate the active material included in the mixture; and (4) an active material recovery step of recovering the activated active material from a mixture obtained as a result of cooling after the activation step.
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