FIELD: metallurgy of rare metals, possibly processing of concentrate of wolframite.
SUBSTANCE: method is realized due to sintering concentrate of wolframite together with potassium carbonate at presence of oxygen; further leaching prepared cake, Sintering is performed at temperature 700 -750°C at relation of potassium carbonate (mass %) to total quantity of tungsten trioxide, sulfur and molybdenum trioxide (mass %) in range 0.65 - 0.7.
EFFECT: selective extraction of tungsten from concentrate due to lowered sintering temperature without crust formation.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PROCESSING TUNGSTEN CONCENTRATES | 2015 |
|
RU2605741C1 |
| METHOD FOR PROCESSING OF WOLFRAMITE | 1995 |
|
RU2094511C1 |
| METHOD OF PRODUCTION OF CALCIUM TUNGSTATE | 2005 |
|
RU2291111C1 |
| METHOD OF PROCESSING COMPOUND TUNGSTEN-TIN CONCENTRATES | 2002 |
|
RU2221887C1 |
| METHOD FOR PROCESSING TUNGSTEN CONCENTRATES | 2022 |
|
RU2785560C1 |
| METHOD FOR PROCESSING OF HUBNERITE CONCENTRATES | 1995 |
|
RU2091497C1 |
| METHOD FOR PROCESSING SPENT MOLYBDENUM-ALUMINIUM-CONTAINING CATALYST | 2017 |
|
RU2645825C1 |
| TECHNOLOGY OF UTILIZATION OF BY-PRODUCTS AND WASTE OF HYDROMETALLURGICAL PROCESSES | 1999 |
|
RU2180012C2 |
| METHOD FOR RECOVERY OF TUNGSTEN FROM MANGANESE-TUNGSTATE CONCENTRATE | 1990 |
|
RU2024638C1 |
| METHOD FOR OBTAINING SODIUM TUNGSTATE | 2012 |
|
RU2504592C1 |
