Title:
METHOD FOR PRODUCING MANGANESE(II) SULFATE MONOHYDRATE FROM BY-PRODUCT OF ZINC REFINING PROCESS
Document Type and Number:
WIPO Patent Application WO/2023/211260
Kind Code:
A1
Abstract:
A method for producing manganese(II) sulfate monohydrate, according to one embodiment of the present invention, comprises: a pulverization and cleaning process for pulverizing and cleaning a manganese-containing by-product produced in a hydrometallurgical zinc refining process; a leaching process for leaching the pulverized manganese-containing by-product after the pulverization and cleaning process; a neutralization process for neutralizing a leach solution produced as a result of the leaching process; an impurity removal process for removing impurities from the leach solution which has been neutralized by means of the neutralization process; a solvent extraction process for, by using a solvent extraction method, recovering manganese, in the form of an aqueous solution of manganese(II) sulfate, from the process solution which has gone through the impurity removal process; and a crystallization process for producing manganese(II) sulfate monohydrate by evaporating and concentrating the aqueous solution of manganese(II) sulfate produced in the solvent extraction process.
More Like This:
Inventors:
KIM MIN JI (KR)
PARK SANG CHIL (KR)
PARK SANG CHIL (KR)
Application Number:
PCT/KR2023/005959
Publication Date:
November 02, 2023
Filing Date:
May 02, 2023
Export Citation:
Assignee:
KOREA ZINC CO LTD (KR)
International Classes:
C01G45/10; B01D11/04; H01M4/02; H01M4/505; H01M10/0525
Foreign References:
| KR101266437B1 | 2013-05-22 | |||
| KR20150050630A | 2015-05-11 | |||
| KR20210120669A | 2021-10-07 | |||
| CN104591291A | 2015-05-06 | |||
| KR20150050632A | 2015-05-11 |
Attorney, Agent or Firm:
CHANG, Duck Soon et al. (KR)
Download PDF: