Title:
炭酸リチウムの精製方法
Document Type and Number:
Japanese Patent JP7442829
Kind Code:
B2
Abstract:
To provide a method for purifying lithium carbonate capable of efficiently recovering purified lithium carbonate from crude lithium carbonate.SOLUTION: There is provided a method for purifying lithium carbonate which comprises: a step in which after adding an aluminum salt solution, the liquidity is adjusted to pH 4 to 9 and the precipitated aluminum hydroxide is separated by filtration to obtain a purified lithium salt solution composed of a salt of a lithium ion and the anion of the aluminum salt; a step of adding an alkali metal hydroxide solution to the purified lithium salt solution to obtain a lithium hydroxide solution; and a step of supplying carbon dioxide gas to the lithium hydroxide solution to recover the precipitated lithium carbonate.SELECTED DRAWING: None
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Inventors:
Yukio Sakuma
Jun Nakazawa
Jun Nakazawa
Application Number:
JP2021000826A
Publication Date:
March 05, 2024
Filing Date:
January 06, 2021
Export Citation:
Assignee:
Asaka Riken Co., Ltd.
International Classes:
C22B26/12; B09B3/30; B09B3/40; B09B3/70; C01D15/08; C22B1/00; C22B1/02; C22B3/44; C22B7/00; H01M10/54
Domestic Patent References:
| JP2015203131A | ||||
| JP2012229481A | ||||
| JP2019178395A | ||||
| JP2012106874A | ||||
| JP2001185241A | ||||
| JP11054159A |
Attorney, Agent or Firm:
Deloitte Tohmatsu Patent Attorneys Corporation
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