Efficiency in the Extraction of Pure Silicon from Al-Si Alloy Melts by a Combined Process of Solvent Refining and Centrifugation for Solar Silicon Feedstock

Ki Young Kim; Ju Young Cho; Kum Hee Seo

doi:10.4028/www.scientific.net/AMR.652-654.1153

Paper Titles

Research on Multiple Plastic Deformations of Ultra-High Strength Aluminium Alloy
p.1132

Prediction of Electrical Conductivity of Cu-15Ni-8Sn-XSi Alloys Using the Physical Model and Artificial Intelligence Model
p.1138

Preparation and Corrosion Resistance of Cu-Based Bulk Glassy Alloys
p.1143

The Inhibiting Effect of Monoethanolamine on 6063 Aluminum Alloy in Sodium Chloride Solution
p.1149

Efficiency in the Extraction of Pure Silicon from Al-Si Alloy Melts by a Combined Process of Solvent Refining and Centrifugation for Solar Silicon Feedstock
p.1153

Research on Material Erosion Mechanisms of High Si-Al Alloy by Micro-EDM
p.1157

Manufacture, Structure and Properties of Copper Foams
p.1163

Experimental Measurements of the Selected Properties of AeroTherm
p.1169

Influence Research on the Pretreatment of Recycled Coarse Aggregate to the Strength of Recycled Concrete
p.1173

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 652-654Efficiency in the Extraction of Pure Silicon from...

Efficiency in the Extraction of Pure Silicon from Al-Si Alloy Melts by a Combined Process of Solvent Refining and Centrifugation for Solar Silicon Feedstock

Abstract:

Solvent refining of silicon from Al-Si melts assisted by a centrifugation was investigated for three alloys in the Al-Si system. Silicon was successfully separated from aluminum-rich phase in the form of a foam by centrifugation. As the silicon content increased, the recovery decreased because less aluminum-rich phases remained in the silicon foam. The weight ratio before and after acid leaching of the silicon foam was inversely related to its apparent density before acid leaching. The purity of the extracted silicon decreased slightly with increased silicon content. The purity of the silicon flakes obtained from the Al - 30% Si alloy was 4N, except aluminum. Boron and phosphorus in the silicon flakes could be lowered effectively by decreasing the silicon content in the Al-Si alloys

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Periodical:

Advanced Materials Research (Volumes 652-654)

Pages:

1153-1156

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.652-654.1153

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Online since:

January 2013

Authors:

Ki Young Kim, Ju Young Cho, Kum Hee Seo

Keywords:

Al-Si Alloy, Centrifugation, Solar Silicon Feedstock, Solvent Refining

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