FIELD: rare-earth metals metallurgy. SUBSTANCE: method includes heating of mixture of concentrate with sulphuric acid, subsequent leaching of produced sinter in water with transfer of scandium into solution, leaching of tungsten from residue with soda solution. Mixture is heated in two stages at first stage at 220- 280 C; at second stage at 350-550 C. EFFECT: enhanced efficiency of method.
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PROCESSING OF WOLFRAMITE | 1995 |
|
RU2094511C1 |
| METHOD OF HYDROMETALLURGICAL DECOMPOSITION OF PERSISTENT WOLFRAMITE CONCENTRATES | 1995 |
|
RU2102512C1 |
| METHOD OF PROCESSING TUNGSTEN CONCENTRATES | 2015 |
|
RU2605741C1 |
| METHOD OF CONCENTRATING SCANDIUM DERIVED FROM WASTES OF WOLFRAMITE CONCENTRATE PROCESSING | 1993 |
|
RU2069180C1 |
| METHOD FOR LEACHING TUNGSTEN FROM TIN RAW MATERIAL SMELTING SLAG AND AN APPARATUS FOR ITS IMPLEMENTATION | 2020 |
|
RU2757774C2 |
| WOLFRAMITE CONCENTRATE PROCESSING METHOD | 2005 |
|
RU2293132C1 |
| METHOD FOR RECOVERY OF TUNGSTEN FROM MANGANESE-TUNGSTATE CONCENTRATE | 1990 |
|
RU2024638C1 |
| EXTRACTION OF Fe, Mn, Ni, Co, Cu, Al FROM CAKE OBTAINED AFTER SODA SINTERING AND LEACHING OF TUNGSTEN CONCENTRATE, OLEUM SULPHITATION WITH SUBSEQUENT NEUTRAL AND ACID LEACHING | 2019 |
|
RU2698082C1 |
| METHOD OF PREPARING METAL SCANDIUM | 1993 |
|
RU2102513C1 |
| METHOD FOR PROCESSING SOLUTIONS AFTER CARBONATE PROCESSING OF TUNGSTEN ORES | 2016 |
|
RU2633677C1 |
