FIELD: chemistry.
SUBSTANCE: method includes treatment of ore concentrate with sulphuric acid in a sulphatisation furnace and absorption of gaseous silicium fluoride released from sulphatisation process to obtain hydrofluosilicic acid. bertrandite-phenacite-fluorite concentrate is used as ore concentrate, treatment of concentrate with sulphuric acid is performed using 93% sulphuric acid : concentrate ratio (w/w) (1.5÷2.0):1 at temperature 200÷320°C.
EFFECT: non-waste production of hydrofluosilicic acid, range of raw materials for production is enlarged.
1 ex, 1 tbl
| Title | Year | Author | Number |
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| MIXTURE FOR PRODUCING BERYLLIUM SULPHATE FROM MIXTURE OF BERYLLIUM CONCENTRATES | 2013 |
|
RU2561402C2 |
| METHOD OF PROCESSING BERYLLIUM CONCENTRATES | 2006 |
|
RU2309121C2 |
| METHOD OF HYDROFLUOSILICIC ACID PRODUCTION | 2006 |
|
RU2324649C2 |
