FIELD: hydrometallurgy.
SUBSTANCE: invention relates specifically to processing of polymetallic sulphide materials containing non-ferrous and precious metals. Polymetallic sulphide materials of non-ferrous metals are leached in a solution of nitric acid and nitrous gases are trapped. The leaching is carried out with catalysts, which are used as a pyrite concentrate and an aqueous solution of iron sulphate (III). The ratio of the total mass of pyrite and non-ferrous metal sulphides in polymetallic raw materials is (0.5-1):1, and the initial concentration of iron (III) ions in the leaching solution is 5-30 g/dm3.
EFFECT: reduction of consumption of nitric acid and increase of extraction of non-ferrous metals into the solution.
2 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF DRESSING MAN-MADE MINERAL STOCK OF NONFERROUS METALS | 2012 |
|
RU2480290C1 |
| METHOD OF COMPLEX PROCESSING OF PYRITIC RAW MATERIALS | 2016 |
|
RU2627835C2 |
| METHOD FOR HYDROMETALLURGICAL REPROCESSING OF SULFIDE CONCENTRATES | 2007 |
|
RU2339706C1 |
| HEAP BIOLOGICAL LEACHING LEAN REFRACTORY MINERAL RAW MATERIALS OF NATURAL AND TECHNOGENIC ORIGIN | 2017 |
|
RU2679724C1 |
| POLYMETAL ORES BENEFICIATION TAILINGS PROCESSING COMBINE METHOD | 1992 |
|
RU2044079C1 |
| COPPER CONCENTRATE LEACHING METHOD | 2005 |
|
RU2373298C2 |
| METHOD OF LEACHING PYRITE CONTAINING RAW MATERIALS | 2017 |
|
RU2651017C1 |
| COMBINED METHOD OF PROCESSING TAILINGS OF CONCENTRATION OF POLYMETALLIC ORES | 1998 |
|
RU2197547C2 |
| METALS EXTRACTION FROM SULFIDE MATERIALS | 2003 |
|
RU2353679C2 |
| METHOD OF COMPLEX PROCESSING OF GOLD-CONTAINING SULFIDE ARSENIC CONCENTRATES | 2015 |
|
RU2632742C2 |
