Distribution of representative impurities in metallurgical-grade silicon using CaO-SiO2-CaF2 and CaO-SiO2-CaCl2 slags
Date
2013Author
Huang, Liu Qing
Lai, Hui Xian
Lu, Cheng Hao
Fang, Ming
Chen, Juan
Lin, Yan Xu
Yu, De Qin
Li, Jin Tang
Ma, Wen Hui
Shen, Jian Ning
Luo, Xue Tao
罗学涛
Collections
- 材料学院-会议论文 [72]
Abstract
This paper presents a detailed analysis of impurities distribution in metallurgical-grade silicon after CaO-SiO2-CaF2 and CaO-SiO2-CaCl2 slags refining. It demonstrates that the impurities removal efficiency generally increase in metallurgical-grade silicon after CaO-SiO2-CaCl2 slag refining compared to that after CaO-SiO2-CaF2 slag refining. It is also determined that metallic impurities like Fe, Al and Ca tend to co-deposit with Si to form Si-Ca based intermetallic compounds in the precipitate phase after slag refining. ? (2013) Trans Tech Publications, Switzerland.