Back to results
US 11,830,992 B2Granted
Method of regenerating lithium precursor
AssigneeSK Innovation Co., Ltd.
InventorsYeon Hwa La, Dong Wook Ha
Life of this patent
Estimating the term…
Abstract
In a method for regenerating a lithium precursor, a lithium-containing waste mixture is put into a reactor. An inside of the reactor is replaced with carbon dioxide. Temperature raising treatment is performed on the lithium-containing waste mixture and the carbon dioxide to produce lithium carbonate and a transition metal-containing mixture. The lithium precursor may be recovered with high yield and high efficiency through dry treatment using carbon dioxide.
Claims14
A method for regenerating a lithium precursor comprising:
- putting a lithium-containing waste mixture into a reactor;
- supplying carbon dioxide to a lower portion of the reactor so that an atmosphere inside the reactor is replaced with carbon dioxide while oxygen inside the reactor is removed;
- and
- performing a temperature raising treatment on the lithium-containing waste mixture and on the carbon dioxide after the atmosphere inside the reactor is replaced with carbon dioxide and while oxygen inside the reactor is removed to produce lithium carbonate and a transition metal-containing mixture,
- wherein the temperature raising treatment is not performed in the supplying of carbon dioxide.
2 more elements
Dependencies are inferred from the claim text.