Title:
METHOD AND FACILITY FOR RECOVERING MANGANESE FROM WASTE DRY BATTERY
Document Type and Number:
WIPO Patent Application WO/2022/185974
Kind Code:
A1
Abstract:
Provided is a method for recovering manganese from a waste dry battery, whereby it becomes possible to recover a high-purity manganese-containing solution in a simple manner. The present invention includes the following steps in this order: a step for selecting a waste dry battery; a pulverization/sieving step for producing a granular body from the waste dry battery; a step for treating the granular body with an acid; a first solid-liquid separation step for separating a first leaching residue; an acid/reducing agent treatment step for producing a second leaching solution from the first leaching residue; a second solid/liquid separation step for separating the second leaching solution; and a manganese extraction step for producing a manganese-ion-containing solution from the second leaching solution. In the method, the manganese extraction step includes a specified zinc removal step and a specified iron removing step in a random order.
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Inventors:
SHINODA MARIKO (JP)
YAMAGUCHI TOYOSHI (JP)
MURAI RYOTA (JP)
OZAWA SUMITO (JP)
OKUYAMA GORO (JP)
YAMAGUCHI TOYOSHI (JP)
MURAI RYOTA (JP)
OZAWA SUMITO (JP)
OKUYAMA GORO (JP)
Application Number:
PCT/JP2022/007005
Publication Date:
September 09, 2022
Filing Date:
February 21, 2022
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C22B1/00; C22B3/06; C22B3/22; C22B3/44; C22B7/00; C22B47/00; H01M6/52
Domestic Patent References:
| WO2019197192A1 | 2019-10-17 |
Foreign References:
| JPH04310280A | 1992-11-02 | |||
| JP2015206077A | 2015-11-19 | |||
| JP2012036422A | 2012-02-23 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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