FIELD: processing of recoverable resources. SUBSTANCE: large particles of exhausted catalyst containing platinum metals and alumina are disintegrated and mixed with at least stoichiometric amount of concentrated sulfuric acid in presence of solid carbon-containing additives. Resultant suspension is heat treated and subjected to aqueous leaching. Leaching solution is supplemented with flocculant, settled, and separated into ammonium sulfate aqueous solution and solid phase accumulating platinum metals. EFFECT: recovered precious materials with no harm to environment. 3 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF EXTRACTING PLATINUM AND/OR PALLADIUM FROM SPENT CATALYSTS | 2000 |
|
RU2175266C1 |
| METHOD OF RECOVERY OF NOBLE METALS FROM ALUMINA MATERIALS AND PRODUCTION WASTES | 1995 |
|
RU2083705C1 |
| METHOD FOR OBTAINING CONCENTRATE OF PRECIOUS METALS FROM PRODUCTS OF ORE PROCESSING AND SECONDARY RAW MATERIALS | 2017 |
|
RU2673590C1 |
| PROCESSING METHOD OF DEACTIVATED CATALYSTS ON CARRIERS FROM ALUMINIUM OXIDE, WHICH CONTAIN METALS OF PLATINUM GROUP AND RHENIUM | 2012 |
|
RU2490342C1 |
| METHOD OF PRODUCING DICHLORODIAMMINEPALLADIUM FROM PALLADIUM-CONTAINING MATERIAL | 1996 |
|
RU2100277C1 |
| METHOD FOR PROCESSING INDUSTRIAL PRODUCTS CONTAINING PRECIOUS METALS OBTAINED IN THE PRODUCTION OF CATHODE NICKEL (OPTIONS) | 2022 |
|
RU2789528C1 |
| METHOD OF PREPARING REFRACTORY METALS FROM LOPARITE CONCENTRATE | 1999 |
|
RU2147621C1 |
| METHOD OF PROCESSING SILICATE RAW MATERIAL | 2001 |
|
RU2179527C1 |
| METHOD FOR REPROCESSING OF ALUMINOPLATINUM CATALYSTS, IN PARTICULAR, RHENIUM CONTAINING CATALYSTS | 2001 |
|
RU2204619C2 |
| METHOD FOR PROCESSING CONCENTRATE OF PRECIOUS METALS | 1995 |
|
RU2094499C1 |
