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Purification of Refined Metallurgical-grade Silicon up to Solar Grade Silicon by Extraction

Published online by Cambridge University Press:  31 January 2011

Sergey M Karabanov
Affiliation:, Ryazan Metal Ceramics Instrumentation Plant JSC, Ryazan, Russian Federation
Dmitriy V Suvorov
Affiliation:, Ryazan State Radio Engineering University, Ryazan, Russian Federation
Boris N Sazhin
Affiliation:, Ryazan Metal Ceramics Instrumentation Plant JSC, Ryazan, Russian Federation
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The paper studies the theoretical analysis of silicon purification process using the method of extraction from solid phase in fine-dyspersated condition. Axial profile impurity concentration in silicon particles, time dynamics of average impurity concentration at various purification conditions (temperature, particle size, impurity concentration in extractant) are obtained by numerical simulation. The requirements to a particle size and temperature condition when practically important purification efficiency is reached, are determined. The design of an industrial-scale plant is shown schematically.

Research Article
Copyright © Materials Research Society 2009

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