FIELD: metallurgy.
SUBSTANCE: procedure for purification of zinc sulphate solution from impurities consists in hydrolytic purification with preliminary iron oxidisation in two stages: first with diluted solution of hydrogen peroxide at temperature 20-55°C and consumption 0.95-1.1 of stoichiometric required amount, then with manganese dioxide contained in electrolytic slime of zinc production.
EFFECT: complete or partial avoiding expenditures for costly oxidant - manganese ore and reduced contents of foreign impurities in zinc sulphate solution.
2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| MANGANESE DIOXIDE PRODUCTION PROCESS | 2000 |
|
RU2172791C1 |
| MANGANESE RAW MATERIAL REPROCESSING METHOD | 1992 |
|
RU2054494C1 |
| METHOD FOR OXIDATION OF IRON ATOMS IN ZINC SULFATE SOLUTIONS | 2003 |
|
RU2239667C1 |
| MANGANESE ORE PROCESSING METHOD | 2001 |
|
RU2175991C1 |
| METHOD OF MANGANESE HEAP BIOLEACHING OF MANGANESE-CONTAINING MATERIALS | 2018 |
|
RU2686158C1 |
| METHOD OF EXTRACTION OF IONS OF IRON, ZINC, COPPER AND MANGANESE | 2006 |
|
RU2338801C2 |
| METHOD OF PROCESSING MANGANESE ORE | 2010 |
|
RU2441086C1 |
| METHOD FOR TREATMENT OF LOW-GRADE OXIDIZED ZINC ORES AND CONCENTRATES WITH ZINC, MANGANESE, IRON, LEAD, SILVER, CALCIUM AND SILICON DIOXIDE RECOVERY | 2010 |
|
RU2441930C1 |
| METHOD FOR PROCESSING POLYMETALLIC SULPHIDE MATERIALS OF NON-FERROUS METALS | 2022 |
|
RU2796344C1 |
| METHOD OF RECYCLING SPENT ETCHING SOLUTIONS CONTAINING IRON (II) SULPHATES AND CHLORIDES | 2010 |
|
RU2428522C1 |
