US 12,123,074 B2
Method for dissolving lithium compound, method for manufacturing lithium carbonate, and method for recovering lithium from lithium ion secondary cell scrap
Hirotaka Ariyoshi, Hitachi (JP); Isao Tomita, Hitachi (JP); and Hiroshi Abe, Hitachi (JP)
Assigned to JX METALS CIRCULAR SOLUTIONS CO., LTD., Tokyo (JP)
Filed by JX METALS CIRCULAR SOLUTIONS CO., LTD., Tokyo (JP)
Filed on May 11, 2023, as Appl. No. 18/315,623.
Application 18/315,623 is a continuation of application No. 16/635,964, granted, now 11,718,895, previously published as PCT/JP2018/028929, filed on Aug. 1, 2018.
Claims priority of application No. 2017-150167 (JP), filed on Aug. 2, 2017; and application No. 2017-150168 (JP), filed on Aug. 2, 2017.
Prior Publication US 2023/0279522 A1, Sep. 7, 2023
Int. Cl. C22B 26/12 (2006.01); B09B 3/80 (2022.01); C01D 15/08 (2006.01); C22B 1/02 (2006.01); C22B 3/06 (2006.01); C22B 3/44 (2006.01); H01M 10/0525 (2010.01); H01M 10/54 (2006.01)
CPC C22B 26/12 (2013.01) [B09B 3/80 (2022.01); C01D 15/08 (2013.01); C22B 1/02 (2013.01); C22B 3/06 (2013.01); C22B 3/44 (2013.01); H01M 10/0525 (2013.01); H01M 10/54 (2013.01); C01P 2002/72 (2013.01); C01P 2006/40 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for dissolving a lithium compound, the method, comprising bringing a lithium compound into contact with water or an acidic solution, and feeding, separately from the lithium compound, a carbonate ion to the water or the acidic solution to obtain a lithium dissolved solution,
wherein the lithium compound comprises cobalt, aluminum, and at least one of lithium hydroxide, lithium oxide, and lithium carbonate, and
wherein a pH of the lithium dissolved solution is from 7 to 10.