C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 33/025 (2006.01) C01B 31/02 (2006.01) C01B 31/36 (2006.01)
Patent
CA 2739041
The invention relates to a complete method for producing pure silicon that is suitable for use as solar-grade silicon, comprising the reduction of a silicon oxide, purified by acidic precipitation from an aqueous solution of a silicon oxide dissolved in an aqueous phase, using one or more pure carbon sources, the purified silicon oxide being obtained, in particular, by the precipitation of a silicon oxide dissolved in an aqueous phase in an acidifier. The invention also relates to a formulation containing an activator and to a device for producing silicon, a reactor and electrodes.
L'invention concerne un procédé global de production de silicium pur apte à être utilisé comme silicium solaire, ce procédé comportant la réduction d'un oxyde de silicium, purifié par précipitation acide à partir d'une solution aqueuse d'un oxyde de silicium dissout en phase aqueuse, avec une ou plusieurs sources de carbone pures, l'oxyde de silicium purifié étant notamment obtenu par précipitation d'un oxyde de silicium dissout en phase aqueuse dans un acidifiant. L'invention porte également sur une formulation comportant un activeur, sur un dispositif de production de silicium, un réacteur et des électrodes.
Frings Bodo
Groth Thomas
Karl Alfons
Lang Juergen Erwin
Lunt-Rieg Ingrid
Evonik Degussa Gmbh
Marks & Clerk
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