	US 11,932,548 B2
	Method for manufacturing lithium hydroxide powder, method for manufacturing positive electrode active material for lithium secondary cell, and package
Kenji Gouda, Niihama (JP); Keiichiro Suzuki, Niihama (JP); and Jun-ichi Kageura, Niihama (JP)
Assigned to SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo (JP); and TANAKA CHEMICAL CORPORATION, Tokyo (JP)
Appl. No. 16/976,103
Filed by SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo (JP); and TANAKA CHEMICAL CORPORATION, Fukui (JP)
PCT Filed Feb. 28, 2019, PCT No. PCT/JP2019/007868 § 371(c)(1), (2) Date Aug. 27, 2020, PCT Pub. No. WO2019/168110, PCT Pub. Date Sep. 6, 2019.
Claims priority of application No. 2018-036807 (JP), filed on Mar. 1, 2018.
Prior Publication US 2020/0407234 A1, Dec. 31, 2020
Int. Cl. C01D 15/02 (2006.01); B65D 77/22 (2006.01); B65D 81/18 (2006.01); B65D 85/84 (2006.01); H01M 4/04 (2006.01); H01M 4/48 (2010.01); H01M 10/0525 (2010.01)

CPC C01D 15/02 (2013.01) [B65D 81/18 (2013.01); B65D 85/84 (2013.01); H01M 4/483 (2013.01); H01M 10/0525 (2013.01); C01P 2004/61 (2013.01); C01P 2006/40 (2013.01)]

3 Claims

1. A method for manufacturing a lithium hydroxide powder, the method including:

a pulverizing step of pulverizing coarse particles of lithium hydroxide to obtain a lithium hydroxide powder; and

a carbonation-suppressing step of storing the lithium hydroxide powder after the pulverization in a storage container,

wherein the storage container is provided with a circulator for circulating a gas having a low concentration of carbon dioxide at a set flow rate in the storage container,

the circulator has an introduction path for introducing the gas into the storage container and a discharge path for discharging the gas from the storage container, and

an inflow rate of the gas into the storage container is 15 L/min or less.