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US 2026/0296907 A1Published application
High-efficiency method for producing lithium hydroxide from lithium carbonate through process improvement
AssigneeKorea Institute of Geoscience and Mineral Resources
InventorsTae-Gong RYU, Jun-Ho SHIN, Jae-Min JEONG
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Abstract
The present invention relates to a method for producing lithium hydroxide (LiOH) with high efficiency from lithium carbonate (Li2CO3) through process improvement, whereby lithium hydroxide can be produced from lithium carbonate with high efficiency in an environmentally friendly manner by improving the final lithium ion concentration and the lithium ion recovery rate and reusing wastes.
Claims13
A method for producing lithium hydroxide, comprising:
- (a) preparing a mixture by adding calcium hydroxide (Ca(OH)2) to a lithium carbonate (Li2CO3) slurry;
- (b) separating a filtrate from the mixture prepared in step (a);
- (c) concentrating by evaporating water of the filtrate separated in step (b);
- and
- (d) crystallizing lithium hydroxide (LiOH) from the filtrate concentrated in step (c).
2 more elements
Dependencies are inferred from the claim text.