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Patent Searching and Data


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)
Application Number:
PCT/JP2021/016223
Publication Date:
October 28, 2021
Filing Date:
April 21, 2021
Export Citation:
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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
Foreign References:
JP2009046390A2009-03-05
JP2011032151A2011-02-17
JP2019530795A2019-10-24
JP2019099901A2019-06-24
KR20160002578A2016-01-08
JP2019178395A2019-10-17
JP2020164969A2020-10-08
Attorney, Agent or Firm:
AXIS PATENT INTERNATIONAL (JP)
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