Handling of by-product gases from a silicon furnace

Details Handling of by-product gases from a silicon furnace Handling of by-product gases from a silicon furnace

C - Chemistry, Metallurgy

01

B

23/325

C01B 33/02 (2006.01) C01B 33/025 (2006.01)

Patent

CA 1257767

HANDLING OF BY-PRODUCT GASES FROM A SILICON FURNACE ABSTRACT What is disclosed is an improvement in a process for the carbothermic reduction of silicon dioxide to form silicon, the improvement comprising (a) contacting the by-produced gases from the silicon furnace with a liquified hydrocarbon-containing gas to cool the by-produced gases and to cause silicon-containing materials to completely condense and to form agglomerated solids; (b) removing the agglomerated, solid materials from the gases, and (c) recovering energy value from the solids-free by-produced gases.

531570

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