Method for producing highly-pure granular silicon
AssigneeSolarworld Aktiengesellschaft
InventorsTheo König, Matthias Pfaffelhuber, Heiko Herold, Günter Holdenried, Leslaw Mleczko
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Abstract
The invention relates to a method for producing hyper-pure, granular silicon by decomposing a gas containing silicon in a reactor consisting of a silicon carbide-based, carbon-fiber reinforced material; to a corresponding reactor; and to the use of said reactor for producing silicon.
Claims8
A method for producing hyper-pure granular silicon by decomposition of a silicic gas carried out in a reactor consisting of a silicon carbide-based carbon-fibre reinforced material.
A reactor for the manufacture of hyper-pure granular silicon by decomposition of a silicic gas, wherein the reactor comprises:
- a silicon carbide-based carbon-fibre reinforced material;
- a bottom of the reactor;
- and a reactor head, wherein the thermally insulating areas at the bottom of the reactor as well as at the reactor head consist of a carbon-fibre reinforced silicon carbide material with low thermal conductivity, while all other areas are made of a carbon-fibre reinforced silicon carbide material with high thermal conductivity.
A reactor for the manufacture of hyper-pure granular silicon by decomposition of a silicic gas, wherein the reactor comprises a silicon carbide-based carbon-fibre reinforced material;
- and thermally insulating areas at the bottom of the reactor as well as at the reactor head consists of a carbon-fibre reinforced silicon carbide material with carbon excess, while all other areas are made of a carbon-fibre reinforced silicon carbide material with silicon excess.
Dependencies are inferred from the claim text.