FIELD: metallurgy.
SUBSTANCE: method of processing manganese oxide materials containing heterovalent manganese oxides comprises leaching crushed raw stock by sulfuric acid aqueous solution in the presence of bivalent iron sulphate, iron precipitation and manganese extraction from productional solution. Note here that said leaching is performed on adding reducing agent in the form of metal iron or iron sulphate (Fe2+) at 60-95°C for 60-300 min. Leaching is carried out at initial concentration of H2SO4 in leaching solution of up to 100 g/dm3 and final acidity in productional solution relative to hydrogen ion exponent pH<2.
EFFECT: higher manganese yield.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF VANADIUM, MAGNESIUM, MANGANESE-CONTAINING MATERIALS COMPLEX PROCESSING | 2015 |
|
RU2618591C2 |
| MANGANESE RAW MATERIAL REPROCESSING METHOD | 1992 |
|
RU2054494C1 |
| METHOD OF MANGANESE HEAP BIOLEACHING OF MANGANESE-CONTAINING MATERIALS | 2018 |
|
RU2686158C1 |
| MANGANESE DIOXIDE PRODUCTION PROCESS | 2000 |
|
RU2172791C1 |
| METHOD OF USING MANGANESE ORES AND CONCENTRATES AS OXIDIZING AGENT IN PROCESSING URANIUM ORES | 1999 |
|
RU2179195C2 |
| METHOD FOR PROCESSING OF SILVER-BEARING MANGANESE ORES | 1992 |
|
RU2009233C1 |
| METHOD OF MANGANESE-CONTAINING MATERIAL PROCESSING | 0 |
|
SU1803445A1 |
| METHOD FOR RECOVERING MANGANESE FROM MANGANESE-CONTAINING CONCENTRATES | 1996 |
|
RU2100466C1 |
| METHOD FOR PRODUCTION OF MANGANESE DIOXIDE FROM MANGANESE RAW MATERIAL | 1991 |
|
RU2048562C1 |
| MANGANESE-BEARING RAW MATERIAL PROCESSING METHOD | 2002 |
|
RU2223340C1 |
