Title:
METHOD AND FACILITY FOR RECOVERING MANGANESE CONTAINED IN WASTE DRY BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/042606
Kind Code:
A1
Abstract:
The purpose of the present invention is to recover a high-purity manganese-containing solution from a waste dry battery with high yield. Provided is a method for recovering manganese contained in a waste dry battery, the method comprising the following steps in this order: a step for selecting a waste dry battery; a pulverization/sieving step for producing a powdery or granular material from the waste dry battery; a step for treating the powdery or granular material with an acid/an oxidizing agent; 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 solution containing manganese ions from the second leaching solution. In the method, the manganese extraction step includes a specified zinc removal step and a specified iron removal step in a random order.
Inventors:
SHINODA MARIKO (JP)
YAMAGUCHI TOYOSHI (JP)
OZAWA SUMITO (JP)
KIJIMA HIDEO (JP)
YAMAGUCHI TOYOSHI (JP)
OZAWA SUMITO (JP)
KIJIMA HIDEO (JP)
Application Number:
PCT/JP2022/031458
Publication Date:
March 23, 2023
Filing Date:
August 19, 2022
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C22B7/00; C22B1/00; C22B3/02; C22B3/06; C22B3/22; C22B3/44
Domestic Patent References:
| WO2021075136A1 | 2021-04-22 |
Foreign References:
| JP2015206077A | 2015-11-19 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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