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US 2026/0109616 A1Published application
Method for recovering lithium from waste lithium batteries
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 lithium batteries by dry molten smelting and, more particularly, to a method for recovering lithium by mixing ground or crushed waste lithium batteries with a flux including a Ca compound and a sulfur component and melting same at a high temperature of 1300° C. or higher, and then obtaining a lithium-sulfide compound (Li2SO4) volatilizing therefrom.
Claims12
A method of recovering lithium from a waste lithium battery, the method comprising:
- preprocessing of grinding or crushing a waste lithium battery cell (1);
- mixing a flux including a Ca compound and a sulfur component with the preprocessed waste lithium battery cell (2);
- charging the mixture into a heating furnace and melting the same at a high temperature of 1300° C. or higher (3);
- and
- obtaining a lithium-sulfur compound volatilized from the molten slag in the form of dust by air cooling (4).
2 more elements
Dependencies are inferred from the claim text.