发明名称 |
PROCESSES AND SYSTEMS FOR PRODUCING SILICON TETRAFLUORIDE FROM FLUOROSILICATES IN A FLUIDIZED BED REACTOR |
摘要 |
<p>Processes and systems for preparing silicon tetrafluoride by the thermal decomposition of an alkali or alkaline earth-metal fluorosilicate in a fluidized bed reactor. A portion of silicon tetrafluoride that is generated in the decomposition reaction may be recycled to the reactor and used as a fluidizing gas to suspend the fluorosilicate material. Alkali or alkaline earth-metal fluoride residue generated in the decomposition reaction may be discharged from the reactor and reacted with fluorosilicic acid to produce an alkali or alkaline earth-metal fluorosilicate that may be introduced to the reactor for further generation of silicon tetrafluoride.</p> |
申请公布号 |
SG172067(A1) |
申请公布日期 |
2011.07.28 |
申请号 |
SG20110042306 |
申请日期 |
2009.12.15 |
申请人 |
MEMC ELECTRONIC MATERIALS, INC. |
发明人 |
BHUSARAPU, SATISH;GUPTA, PUNEET |
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