Title:
METHOD FOR PRODUCING LITHIUM HYDROXIDE
Document Type and Number:
WIPO Patent Application WO/2021/215486
Kind Code:
A1
Abstract:
The present invention provides a method for producing lithium hydroxide, said method enabling the production of lithium hydroxide from lithium sulfate at a relatively low cost. A method for producing lithium hydroxide from lithium sulfate, said method comprising: a hydroxylation step wherein a lithium hydroxide solution is obtained by reacting the lithium sulfate with barium hydroxide in a liquid; a barium removal step wherein barium ions are removed from the lithium hydroxide solution with use of a cation exchange resin and/or a chelating resin; and a crystal precipitation step wherein lithium hydroxide is precipitated in the lithium hydroxide solution after the barium removal step.
Inventors:
ARIYOSHI HIROTAKA (JP)
TOMITA ISAO (JP)
ABE HIROSHI (JP)
TOMITA ISAO (JP)
ABE HIROSHI (JP)
Application Number:
PCT/JP2021/016223
Publication Date:
October 28, 2021
Filing Date:
April 21, 2021
Export Citation:
Assignee:
JX NIPPON MINING & METALS CORP (JP)
International Classes:
C01D15/02; B01J39/07; B09B5/00; C22B3/04; C22B3/06; C22B3/20; C22B3/26; C22B3/42; C22B7/00; C22B19/20; C22B26/12
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Attorney, Agent or Firm:
AXIS PATENT INTERNATIONAL (JP)
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