Removal of boron from metallurgical grade silicon by electromagnetic induction slag melting

作     者：罗大伟 刘宁 卢一平 张国良 李廷举 LUO Da-wei;LIU Ning;LU Yi-ping;ZHANG Guo-liang;LI Ting-ju

作者机构：大连理工大学材料科学与工程学院大连116024 大连理工大学三束材料改性教育部重点实验室大连116024 

基　　金：Project (50674018) supported by the National Natural Science Foundation of China 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2011年第21卷第5期

页      码：1178-1184页

摘      要：A new purification process was developed to remove impurities in metallurgical grade silicon （MG-Si） by electromagnetic induction slag melting （EISM）. Vacuum melting furnace was used to purify boron in different slag systems. The results show that the removal effect in SiO2-CaO-Al2O3 systems is better than that in other slag systems by EISM. The boron content in MG-Si is successfully reduced from 1.5× 10^-5 to 0.2× 10^-5 during EISM at 1 823 K for 2 h. Meanwhile, Al, Ca and Mg elements in MG-Si are also well removed and their removal efficiencies reach 85.0%, 50.2% and 66.7%, respectively, which indicates that EISM is very effective to remove boron and metal impurities in silicon.

主 题 词：metallurgical grade silicon slag system partition ratio 

学科分类：080903[080903] 0809[工学-计算机类] 08[工学] 0806[工学-电气类] 0818[工学-交通运输类] 0815[工学-矿业类] 080501[080501] 0805[工学-能源动力学] 080502[080502] 0813[工学-化工与制药类] 0703[理学-化学类] 0814[工学-地质类] 0702[理学-物理学类] 

核心收录：

D　O　I：10.1016/S1003-6326(11)60840-6

馆 藏 号：203481707...