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Title:
METHOD FOR SEPARATING LITHIUM
Document Type and Number:
WIPO Patent Application WO/2021/090571
Kind Code:
A1
Abstract:
Provided is a method for separating lithium, with which lithium is separated from a lithium solution containing 200 mg/L or more of lithium and 20 mg/L or more of fluorine. The method includes: a first removal step for adding a first component, which solidifies fluorine contained in the lithium solution, to the lithium solution, removing the solidified fluorine and obtaining a fluorine-depleted liquid; and a second removal step for adding a second component, which solidifies the first component remaining in the fluorine-depleted liquid, to the fluorine-depleted liquid, removing the solidified first component and obtaining a first component-depleted liquid.

Inventors:
NISHIKAWA CHIHIRO (JP)
HONMA YOSHIHIRO (JP)
WATANABE RYOEI (JP)
Application Number:
PCT/JP2020/034206
Publication Date:
May 14, 2021
Filing Date:
September 10, 2020
Export Citation:
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Assignee:
DOWA ECO SYSTEM CO LTD (JP)
International Classes:
B09B3/00; C22B3/04; C22B3/06; C22B3/22; C22B3/44; C22B7/00; C22B26/12; H01M10/54
Domestic Patent References:
WO2018076994A12018-05-03
Foreign References:
JP2018145473A2018-09-20
JP2012229471A2012-11-22
JP2012072464A2012-04-12
JP2016003382A2016-01-12
JP2012036419A2012-02-23
JP2011094228A2011-05-12
JP2011094227A2011-05-12
JP2004011010A2004-01-15
JP2012229481A2012-11-22
JP2019178395A2019-10-17
JP5791917B22015-10-07
JP5872788B22016-03-01
JP2013114621A2013-06-10
Attorney, Agent or Firm:
HIROTA, Koichi et al. (JP)
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