METHOD FOR MANUFACTURING GRANULATED BODY FOR LITHIUM ADSORPTION

WIPO Patent Application WO/2023/276697

A1

Provided is a method for manufacturing a granulated body for lithium adsorption with which it is possible to sufficiently suppress elution of manganese in an elution step in production of lithium on a commercial basis.　This method for manufacturing a granulated body for lithium adsorption comprises: a step for kneading a powder of a precursor of a lithium adsorbent and a binder to obtain a kneaded product; a granulating step for molding the kneaded product to obtain a first granulated body; and a sintering step for sintering the first granulated body to obtain a second granulated body. This configuration makes it possible to change the valence of manganese included in the precursor of the lithium adsorbent from 2 to 4, thereby suppressing elution of manganese in the elution step. This configuration also makes it possible to repeatedly use the lithium adsorbent in the production on a commercial basis. In addition, since the concentration of manganese in an eluent obtained in the elution step can be made low, the load in steps after the elution step can be reduced.

MATSUMOTO SHIN-YA (JP)
KUDO YOHEI (JP)
TAKANO MASATOSHI (JP)
HEGURI SHIN-ICHI (JP)
ASANO SATOSHI (JP)

PCT/JP2022/024110

January 05, 2023

June 16, 2022

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SUMITOMO METAL MINING CO (JP)

B01J20/30; B01J2/00

WO2011058841A1	2011-05-19
WO2019203274A1	2019-10-24
WO2020116607A1	2020-06-11

JP2020097011A	2020-06-25
US20140210122A1	2014-07-31

TANG WEIPING: "Development of System of Collecting Lithium from Brine Water", 11 June 2010, KAGAWA INDUSTRY SUPPORT FOUNDATION
See also references of EP 4134159A4

YAMAUCHI PATENT ATTORNEYS (JP)

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