FIELD: metallurgy.
SUBSTANCE: procedure consists in leaching with utilisation of solution of thiosulphate and organic complex compounds of transit metals as catalysts-oxidants of precious metals at their dissolving. As organic complex-formers for leaching there are used natural humic and fulvic acids, also, thiosulphate is regenerated directly in pulp by means of supply of sulphite salts and sulphurous gas simultaneously with air or oxygen and sulphide-ions. As sulphide-ions there are used natural or artificial sulphides and elementary sulphur. Oxidising of precious metals and their completing with thiosulphate and organic and non-organic ligands is performed by using short-living radicals formed directly in solution at reaction of used reagents.
EFFECT: raised efficiency of process.
5 cl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF EXTRACTION OF NON-FERROUS, RARE-EARTH AND NOBBLE METALS FROM REBELLIOUS MINERAL RAW MATERIAL | 2003 |
|
RU2312908C2 |
| PROCEDURE FOR EXTRACTION OF FERROUS, RARE, RADIOACTIVE AND PRECIOUS METALS FROM REFRACTORY MINERAL RAW STOCK | 2007 |
|
RU2415953C2 |
| METHOD OF PROCESSING SULPHIDE MINERALS AND CONCENTRATES | 2003 |
|
RU2331675C2 |
| METHOD OF SULPHIDE STOCK CONTAINING NOBLE METALS | 2010 |
|
RU2447166C2 |
| METHOD OF GOLD EXTRACTION FROM SULPHIDE GOLD-BEARING ORES | 2008 |
|
RU2385959C1 |
| METHOD OF SULPHIDE STOCK CONTAINING NOBLE METALS | 2012 |
|
RU2528300C2 |
| METHOD OF UNDERGROUND LEACHING OF PRECIOUS METALS OUT OF ORES | 2007 |
|
RU2353763C1 |
| METHOD OF PROCESSING SULFIDE GOLD-CONTAINING MATERIALS | 1991 |
|
RU2031157C1 |
| METHOD OF NOBLE METALS RECOVERY FROM ORES | 2008 |
|
RU2375474C1 |
| EXTRACTION METHOD OF PRECIOUS METALS FROM ORES AND CONCENTRATES | 2012 |
|
RU2479650C1 |
