Title:
PRODUCTION METHOD FOR LITHIUM CARBONATE
Document Type and Number:
WIPO Patent Application WO/2020/203888
Kind Code:
A1
Abstract:
This method is for producing lithium carbonate and comprises: a dissolving step for dissolving crude lithium carbonate in a liquid while having carbon dioxide gas supplied therein; and a decarboxylation step for heating the lithium solution obtained in the dissolving step, and removing carbon dioxide. In the dissolving step, the liquid mixed with crude lithium carbonate is retained in a reaction tank. The liquid is stirred using a stirrer. The stirrer has: a cylindrical body arranged in an upright position in the reaction tank; a plurality of rotating blades that are located at an end of the cylindrical body, that are driven to rotate about the axial line of rotation, and that extend radially; a plurality of fixed blades that extend radially and that are fixed and arranged radially outside the rotating blades at the end of the cylindrical body; and a gas supply tube that blows gas toward the rotating blades and the fixed blades.
Inventors:
ARIYOSHI HIROTAKA (JP)
TOMITA ISAO (JP)
ABE HIROSHI (JP)
TOMITA ISAO (JP)
ABE HIROSHI (JP)
Application Number:
PCT/JP2020/014320
Publication Date:
October 08, 2020
Filing Date:
March 27, 2020
Export Citation:
Assignee:
JX NIPPON MINING & METALS CORP (JP)
International Classes:
B01F1/00; B01F3/04; B01F7/16; B01F15/02; C01D15/08; C22B3/04; C22B26/12
Foreign References:
| JP2018145473A | 2018-09-20 | |||
| JP2000234194A | 2000-08-29 |
Other References:
See also references of EP 3950106A4
Attorney, Agent or Firm:
AXIS PATENT INTERNATIONAL (JP)
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