Slag refining for separation of SiC inclusions from Si

被引：4

作者：

Li, Yaqiong ^{[1
]}

Pan, Di ^{[2
]}

Zhang, Lifeng ^{[3
]}

Li, Jiayan ^{[2
]}

Wen, Xin ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China

[2] Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China

[3] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2021年 / 279卷 / 279期

基金：

中国国家自然科学基金;

关键词：

SiC inclusion; Slag refining; Si; Wettability; MULTICRYSTALLINE SILICON; REMOVAL; SOLIDIFICATION; WETTABILITY; PHOSPHORUS; BORON; TI;

D O I：

10.1016/j.seppur.2021.119794

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

SiC inclusions, the hard particles present in Si, have an adverse effect on the mechanical and electrical performance of Si materials. In this study, the separation behavior of SiC in Si was investigated through slag refining. Evaluation of the wettability behaviors between SiC and the CaO-SiO2-MgO slag revealed that the contact angle of SiC/CaO-SiO2-MgO at 1480 degrees C decreased with time, and the surface of SiC became rough due to the reaction between SiC and the slag. Based on the results, a slag refining process was performed, and a strong SiC removal effect was realized under the conditions of long refining times and large slag/Si-SiC ratios.

引用

页数：7

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