Process for refining silicon and silicon purified thereby

Details Process for refining silicon and silicon purified thereby Process for refining silicon and silicon purified thereby

1987-10-05

1989-06-06

Doll, John

Chemistry of inorganic compounds

Silicon or compound thereof

Elemental silicon

156DIG64, 423349, C01B 3302

Patent

active

048373761

ABSTRACT:
Highly pure silicon is produced by refining impure silicon to remove deleterious impurities by contacting a melt of the impure silicon with a reacitve gas which comprises a gaseous halogen compound mixed with steam, hydrogen or a stem/hydrogen mixture.

REFERENCES:
patent: 3442622 (1969-05-01), Monnier et al.
patent: 4097584 (1978-06-01), Reuschel et al.
patent: 4172883 (1979-10-01), Ingle et al.
patent: 4200621 (1980-04-01), Liaw et al.
patent: 4298423 (1981-11-01), Lindmayer

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