Title:
METHOD FOR DISSOLVING BATTERY POWDER IN HYDROCHLORIC ACID
Document Type and Number:
WIPO Patent Application WO/2023/054618
Kind Code:
A1
Abstract:
Provided is a method for dissolving battery powder in hydrochloric acid, whereby a large amount of battery powder can be dissolved in hydrochloric acid after a single treatment and excellent workability is achieved. In this method for dissolving battery powder in hydrochloric acid, valuable metal-containing battery powder obtained from waste lithium batteries is stirred in hydrochloric acid having a concentration of 50-150 g/L at a mass ratio of 250-1000% relative to hydrogen chloride in the hydrochloric acid to obtain a hydrochloric acid suspension of the battery powder, a predetermined amount of hydrochloric acid is then added to the hydrochloric acid suspension to adjust the concentration of hydrochloric acid in the hydrochloric acid suspension to 150-350 g/L, and the resulting mixture is stirred and adjusted so that the proportion of the battery powder in the hydrochloric acid suspension is 50-200% by mass relative to hydrogen chloride in the hydrochloric acid suspension to obtain a hydrochloric acid solution of the battery powder.
Inventors:
YAMADA KEITA (JP)
SAKUMA YUKIO (JP)
HIRAOKA TARO (JP)
NAKAZAWA JUN (JP)
INOUE HIROTO (JP)
SAKUMA YUKIO (JP)
HIRAOKA TARO (JP)
NAKAZAWA JUN (JP)
INOUE HIROTO (JP)
Application Number:
PCT/JP2022/036529
Publication Date:
April 06, 2023
Filing Date:
September 29, 2022
Export Citation:
Assignee:
ASAKA RIKEN CO LTD (JP)
International Classes:
C22B3/10; B09B3/70; C22B1/02; C22B3/16; C22B7/00; C22B26/12; H01M10/54
Domestic Patent References:
| WO2020090690A1 | 2020-05-07 |
Foreign References:
| JP2009193778A | 2009-08-27 | |||
| JP2016069733A | 2016-05-09 | |||
| JP4865745B2 | 2012-02-01 | |||
| CN112063847A | 2020-12-11 | |||
| JP2021085042A | 2021-06-03 | |||
| JP4865745B2 | 2012-02-01 |
Attorney, Agent or Firm:
SATO & ASSOCIATES (JP)
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