FIELD: chemistry.
SUBSTANCE: invention can be used in refining platinum-group metals. A residue consisting of a mixture of hydrated oxides of osmium and ruthenium is saturated with water. The obtained pulp is treated with hydrochloric acid and oxidising agent until dissolution of the residue while heating. The oxidising agent used is hydrogen peroxide or sodium chlorate. Osmium oxide is removed by sucking through an air system. The solution remaining after removal of osmium is filtered, treated with concentrated hydrochloric acid and heated for 2 hours. Ammonium chloride is added and ammonium chlororuthenate is precipitated. The obtained salt is washed from the mother solution.
EFFECT: selective extraction of osmium and ruthenium, shorter duration of the process and reduced consumption of reagents.
1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR SEPARATING RUTHENIUM FROM CONCENTRATES CONTAINING PRECIOUS METALS | 2021 |
|
RU2758957C1 |
| OSMIUM-CONTAINING PRODUCTS PROCESSING METHOD | 1993 |
|
RU2044084C1 |
| METHOD FOR PURIFICATION OF RHODIUM SOLUTION FROM IMPURITIES | 2022 |
|
RU2792512C1 |
| OSMIUM POWDER PRODUCTION METHOD | 2000 |
|
RU2175020C1 |
| METHOD FOR EXTRACTION OF IRIDIUM OF MATERIAL CONTAINING METALS OF PLATINUM GROUP | 1993 |
|
RU2062804C1 |
| METHOD FOR PROCESSING CONCENTRATES BASED ON BASE ELEMENTS CONTAINING RARE METALS OF THE PLATINUM GROUP | 2021 |
|
RU2773294C1 |
| METHOD OF RECOVERING AND SEPARATING PLATINUM-GROUP METALS | 2002 |
|
RU2200132C1 |
| METHOD FOR PURIFICATION OF PLATINUM-PALLADIUM CHLORIDE SOLUTIONS FROM GOLD, SELENIUM, TELLURIUM, AND IMPURITIES OF BASE METALS | 2021 |
|
RU2787321C2 |
| METHOD FOR PROCESSING OF IRON COLLECTOR OF PLATINUM METALS | 2021 |
|
RU2778436C1 |
| METHOD OF RECOVERY OSMIUM FROM CAKES CONTAINING SELENIUM AND NONFERROUS METALS | 2006 |
|
RU2326176C1 |
