Process for refining silicon and silicon purified thereby
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United States of America Patent
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Jun 6, 1989
Grant Date -
N/A
app pub date -
Oct 5, 1987
filing date -
Oct 15, 1986
priority date (Note) -
Expired
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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.
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