Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: The Purification of Metallurgical Grade Silicon by Directional Solidification
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 1521-1526)
Author(s): Tao Lin, School of Chemistry and Environment, South China Normal University, Guangzhou 510006, P. R. China Base of Production, Education & Research on Energy Storage and Power Battery of Guangdong Higher Education Institutes, Guangzhou 510006, P. R. China; Enginee
Bo Wang, School of Chemistry and Environment, South China Normal University, Guangzhou 510006, P. R. China Base of Production, Education & Research on Energy Storage and Power Battery of Guangdong Higher Education Institutes, Guangzhou 510006, P. R. China; Enginee
Yu Liu, School of Chemistry and Environment, South China Normal University, Guangzhou 510006, P. R. China Base of Production, Education & Research on Energy Storage and Power Battery of Guangdong Higher Education Institutes, Guangzhou 510006, P. R. China; Enginee
Yu-yan Hu, School of Chemistry and Environment, South China Normal University, Guangzhou 510006, P. R. China Base of Production, Education & Research on Energy Storage and Power Battery of Guangdong Higher Education Institutes, Guangzhou 510006, P. R. China; Enginee
Dong-liang Lu, School of Chemistry and Environment, South China Normal University, Guangzhou 510006, P. R. China Base of Production, Education & Research on Energy Storage and Power Battery of Guangdong Higher Education Institutes, Guangzhou 510006, P. R. China; Enginee
Yan-hui Sun, School of Chemistry and Environment, South China Normal University, Guangzhou 510006, P. R. China Base of Production, Education & Research on Energy Storage and Power Battery of Guangdong Higher Education Institutes, Guangzhou 510006, P. R. China; Enginee
Hong-yu Chen, School of Chemistry and Environment, South China Normal University, Guangzhou 510006, P. R. China Base of Production, Education & Research on Energy Storage and Power Battery of Guangdong Higher Education Institutes, Guangzhou 510006, P. R. China; Enginee
Abstract: In this study, directional solidification method was used for preparing multicrystalline grade silicon ingot. We have studied three technological parameters which influenced the results of the removal efficiency of the impurities. Experimental results showed that an integral silicon ingot with high-quality is successfully fabricated. Element analysis revealed that the metal impurities Al, Fe and Ca were concentrated in the middle of the silicon ingot mostly. It was inferred that we should carry on more directional solidification experiments to remove the metal impurities. Moreover, it showed that the Cooling water flow rate is the major parameter to the efficiency of the purification in the orthogonal experiment.
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