Continuous production of silicon tetrafluoride gas in a vertical

Details Continuous production of silicon tetrafluoride gas in a vertical Continuous production of silicon tetrafluoride gas in a vertical

1983-06-20

1984-09-11

Kaplan, G. L.

Chemistry of inorganic compounds

Silicon or compound thereof

Halogen containing

C01B 3308

Patent

active

044709595

ABSTRACT:
Silicon tetrafluoride gas is produced by reacting aqueous fluosilicic acid and concentrated sulfuric acid in a vertical column. The fluosilicic acid is fed to an intermediate point of the column and the sulfuric acid to the top of the column. Silicon dioxide, both dissolved and suspended, is fed with fluosilicic acid in some forms so as to produce a by-product acid substantially free of silicon and fluoride values.

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