FIELD: industrial inorganic synthesis.
SUBSTANCE: invention relates to a novel tantalum pentachloride preparation method, which can be used to recover tantalum in the form of its pentachloride from tantalum-containing stock. Method comprises interaction of tantalum pentoxide with silicon tetrachloride at elevated pressure and temperature. Process is effected in autoclave under autogenous pressure developed when heating solid mixed concentrate to 245-300°C.
EFFECT: avoided formation of high-toxicity compounds such as phosgene, carbon monoxide, and chlorinated hydrocarbons.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| NIOBIUM PENTACHLORIDE PREPARATION METHOD | 2005 |
|
RU2292301C1 |
| METHOD OF PREPARING NIOBIUM AND/OR TANTALUM PENTACHLORIDES (OPTIONS) | 2004 |
|
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| METHOD FOR PRODUCING RARE METAL TETRACHLORIDES USING SULPHUR | 2019 |
|
RU2797475C2 |
| METHOD OF CHLORINATING POLYMETALLIC NIOBIUM-TANTALUM CONTAINING RAW MATERIAL AND DEVICE FOR IMPLEMENTING METHOD | 2006 |
|
RU2331680C2 |
| ANHYDROUS CHROMIUM TRICHLORIDE PRODUCTION PROCESS | 1999 |
|
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| TREATMENT METHOD OF RED MUD | 2008 |
|
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| METHOD FOR COLUMBITE CONCENTRATE PROCESSING | 2014 |
|
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| ROLLING METHOD OF SILICA-TITANIC CONCENTRATES | 2008 |
|
RU2382094C1 |
| METHOD OF PRODUCTION OF TANTALUM AND NIOBIUM FROM THEIR COMPOUND | 1995 |
|
RU2084550C1 |
| METHOD FOR CHLORINATION OF SILICON, TITANIUM, ALUMINIUM AND IRON OXIDES | 2022 |
|
RU2810197C2 |
