METHOD FOR PRODUCING Si

Silicon manufacture comprises adding, to a SiO solid, an oxide, a hydroxide, a carbonate or a fluoride of an alkali metal, or an oxide, a hydroxide, a carbonate or a fluoride of an alkaline earth metal, or >=2 of these compounds in a total amount of 1/20 to 1000 times that of the SiO solid, and h...

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Main Authors KONDO, JIRO, OKAJIMA, MASAKI, TOKUMARU, SHINJI, DOHNOMAE, HITOSHI
Format Patent
LanguageEnglish
French
German
Published 08.07.2009
Edition7
Subjects
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Summary:Silicon manufacture comprises adding, to a SiO solid, an oxide, a hydroxide, a carbonate or a fluoride of an alkali metal, or an oxide, a hydroxide, a carbonate or a fluoride of an alkaline earth metal, or >=2 of these compounds in a total amount of 1/20 to 1000 times that of the SiO solid, and heating to the temperature of the melting point of Si to =2000[deg]C, to produce silicon by a chemical reaction. Silicon is separated and recovered from the reaction by-products.
Bibliography:Application Number: EP20030741536