FIELD: extraction of platinum and rhenium from decontaminated used platinum-rhenium catalysts; reworking of secondary raw materials of petrochemical industry.
SUBSTANCE: proposed method includes high-temperature oxidizing roasting at temperature of 1200-1300°C, wet trapping of rhenium by alkaline solution, leaching-out of cinder in hydrochloric acid solution at concentration of 100-150 g/dm3 in presence of oxidizing agent for setting the oxidizing-reducing potential of platinum electrode in pulp relative to saturated silver-chloride electrode equal to 850-1000 mV. Used as oxidizing agent is sodium hypochlorite or elementary chlorine or hydrogen peroxide.
EFFECT: enhanced efficiency of process.
1 tbl, 13 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF EXTRACTING PLATINUM AND/OR PALLADIUM FROM SPENT CATALYSTS ON ALUMINIUM OXIDE SUPPORTS | 2014 |
|
RU2553273C1 |
| METHOD FOR PLATINUM-PERRHENIC CATALYSTS PROCESSING | 2015 |
|
RU2647046C2 |
| METHOD OF EXTRACTING RHENIUM AND PLATINUM METALS FROM SPENT CATALYSTS ON ALUMINIUM OXIDE SUPPORTS | 2013 |
|
RU2525022C1 |
| METHOD OF EXTRAXTION OF RHENIUM AND/OR PLATINUM FROM DEACTIVATED CATALYSTS WITH ALUMINIUM-OXIDED CARRIER | 2009 |
|
RU2398899C1 |
| OPENING METHOD OF PRODUCTS, CONTAINING PRECIOUS METALS | 2008 |
|
RU2375476C1 |
| METHOD FOR PROCESSING MATERIALS CONTAINING PRECIOUS METALS AND IRON | 2020 |
|
RU2750735C1 |
| METHOD FOR PURIFICATION OF PLATINUM-PALLADIUM CHLORIDE SOLUTIONS FROM GOLD, SELENIUM, TELLURIUM, AND IMPURITIES OF BASE METALS | 2021 |
|
RU2787321C2 |
| METHOD FOR PRODUCING REFINED PALLADIUM | 2021 |
|
RU2775785C1 |
| METHOD OF PROCESSING PLATINUM-RHENIUM CATALYSTS | 2006 |
|
RU2311466C1 |
| METHOD OF PROCESSING SULPHIDE CONCENTRATES CONTAINING PYRRHOTINE, PYRITE, CHALCOPYRITE, PENTLANDITE AND PRECIOUS METALS | 2019 |
|
RU2712160C1 |
