Plasma smelting of silicon in transferred arc process

Details Plasma smelting of silicon in transferred arc process Plasma smelting of silicon in transferred arc process

C - Chemistry, Metallurgy

01

B

23/325, 204/96.3

C01B 33/025 (2006.01)

Patent

CA 1298236

PLASMA SMELTING OF SILICON IN TRANSFERRED ARC PROCESS ABSTRACT What is disclosed is a process for preparing silicon using a gas plasma as a heat source. The process comprises a) generating a gas plasma in a reactor utilizing a transferred arc plasma configuration in which a minimum of gas is utilized to form a plasma; b) feeding silicon dioxide and a solid reducing agent directly into the reactor and to the plasma; c) passing the plasma gas, the silicon dioxide, and the solid reducing agent into a reaction zone of the reactor; d) recovering molten silicon and the gaseous by-products.

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