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US 2026/0135176 A1Published application
Lithium recovery method
AssigneeYoung Poong Corporation
InventorsNam Il Moon, Ho Jo Lee, Eung Bae Kim, Su Hwan Yoo
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Abstract
The present invention relates to a method for efficiently recovering valuable metals from end-of-life waste batteries in a dry smelting manner and, more specifically, to a lithium recovery method wherein a flux and a sulfur component are mixed with pulverized or smashed waste lithium battery cells, followed by melting at a high temperature of 1400° C. or higher, and then a lithium-sulfur compound (Li2S) volatilized therefrom is obtained.
Claims9
A method of recovering lithium from a waste lithium battery, the method comprising:
- preprocessing of pulverizing or smashing a waste lithium battery cell;
- mixing a flux and a sulfur component with the preprocessed waste lithium battery cell;
- charging the mixture into a heating furnace and melting the same at a high temperature of 1400° C. or higher;
- and
- obtaining a lithium-sulfur compound volatilized from the molten slag in the form of a dust by air cooling.
2 more elements
Dependencies are inferred from the claim text.