Method and apparatus for preparing high-purity metallic silicon

Details Method and apparatus for preparing high-purity metallic silicon Method and apparatus for preparing high-purity metallic silicon

1991-08-23

1993-09-14

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Including heat exchanger for reaction chamber or reactants...

422198, 422219, 42218622, 42218629, 423348, 423349, F28D 2100

Patent

active

052446395

ABSTRACT:
High-yield preparation of high-purity metallic silicon at is performed by subjecting a stream of oxides of silicon (e.g. in an aerosol) to reaction heat in the presence of a mixture of a material of the group including silicon carbide and silicon dioxide; and a material of the group including carbon and carbon-containing substance. Preferably, silicon oxide produced by the reaction is scavenged from exhaust gas leaving the reaction chamber, re-condensed, and returned to the reaction chamber.

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