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The Research of Bubble Adsorption to Purify Silicon in the Al-Si System

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Abstract:

The removal of impurities in the process of refining metallurgical grade Si by metallurgical method has been one of the most important research. In this paper, a bubble adsorption effect was proposed to refine the primary silicon in the Al-Si melt. The experimental results show that the impurities content in the primary silicon is related to the volume of bubble in the alloys, the more bubbles exist in the alloys, the less impurities are detected in the primary silicon, and the least impurities content is 84.23ppmw except for Al compared to 777.47ppmw in metallurgical grade Si.

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Periodical:

Materials Science Forum (Volume 750)

Pages:

320-323

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.750.320

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Online since:

March 2013

Authors:

Wen Zhou Yu, Wen Hui Ma, Kui Xian Wei, Yong Sheng Ren, Yong Nian Dai, Kazuki Morita

Keywords:

Al-Si Alloy, Bubble Adsorption, Electromagnetic, Primary Silicon, Purification

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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