Title:
METHOD FOR RECOVERING LITHIUM FROM WASTE LITHIUM ION BATTERY
Document Type and Number:
Japanese Patent JP2023104845
Kind Code:
A
Abstract:
To provide a method for recovering lithium from a waste lithium ion battery which can recover lithium at a high recovery rate, and can recycle a salt generated in a recovery process as a mineral acid and alkali in the process.SOLUTION: A method for recovering lithium from a waste lithium ion battery includes: a step of extracting valuable metal such as manganese from a solution obtained by dissolving active substance powder obtained from a waste lithium ion battery with a mineral acid, and adding at least one of sodium hydroxide and potassium hydroxide thereto, by an organic solvent; a separation step of separating a lithium salt and a sodium salt from an alkali metal mixed salt aqueous solution obtained by the extraction step; and a first electrolysis step of electrolyzing a lithium salt aqueous solution.SELECTED DRAWING: Figure 1
Inventors:
YAMADA KEITA
SAKUMA YUKIO
HIRAOKA TARO
SAKUMA YUKIO
HIRAOKA TARO
Application Number:
JP2022086581A
Publication Date:
July 28, 2023
Filing Date:
May 27, 2022
Export Citation:
Assignee:
ASAKA RIKEN KK
International Classes:
C22B26/12; C22B3/06; C22B3/08; C22B3/10; C22B3/26; C22B3/44; C22B21/00; C22B23/00; C22B47/00; C25B1/04; C25B1/46; C25B9/00; C25B9/65; H01M10/54
Attorney, Agent or Firm:
Patent Attorney Corporation Sosei International Patent Office