LITHIUM-CONTAINING SOLUTION PRODUCTION METHOD

Title:

LITHIUM-CONTAINING SOLUTION PRODUCTION METHOD

Document Type and Number:

WIPO Patent Application WO/2022/210847

Kind Code:

A1

Abstract:

Provided is a lithium-containing solution production method which makes it possible to suppress the costs of lithium production by increasing the lithium content in a solution after an elution step and suppressing the amount of an eluted solution to be used in a step which follows the elution step.　This lithium-containing solution production method involves executing the following, in this order: an adsorption step for obtaining adsorbed lithium manganate by contacting a low-lithium-content solution to a lithium adsorbent obtained from lithium manganate; an elution step for obtaining an eluted solution by contacting the adsorbed lithium manganate and an acid-containing solution to one another; and a manganese oxidation step for obtaining a lithium-containing solution, the manganese concentration of which is minimized, by oxidizing the manganese. The acid-containing solution contains a substance obtained by adding an acid to the eluted solution. This production method makes it possible to suppress the cost of producing a lithium-containing solution, to increase the lithium content in an eluted solution following an elution step and to minimize the amount of acid used in the elution step.

Inventors:

IKEDA OSAMU (JP)
TAKANO MASATOSHI (JP)
ASANO SATOSHI (JP)
HEGURI SHIN-ICHI (JP)
MATSUMOTO SHIN-YA (JP)
KUDO YOHEI (JP)
SENBA YUSUKE (JP)
MAEDA KYOHEI (JP)

Application Number:

PCT/JP2022/015851

Publication Date:

October 06, 2022

Filing Date:

March 30, 2022

Export Citation:

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Assignee:

SUMITOMO METAL MINING CO (JP)

International Classes:

C22B26/12; C22B3/24; C22B3/44

Domestic Patent References:

WO2020116607A1	2020-06-11
WO2020116607A1	2020-06-11

Foreign References:

KR101662725B1	2016-10-05
JP2018172775A	2018-11-08

Other References: