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论文类型：期刊论文

发表时间：2012-04-27

发表刊物：VACUUM

收录刊物：SCIE、EI、Scopus

卷号：86

期号：10

页面范围：1417-1422

ISSN号：0042-207X

关键字：Electron beam melting; Molten silicon; Aluminium; Calcium; Impurities removal

摘要：During the refinement of metallurgical-grade silicon (MG-Si). Al and Ca cannot be reduced to a target level by conducting directional solidification only once. Electron beam candle melting (EBCM) is a new method that can be used to further reduce Al and Ca by directly melting Si ingots after directional solidification. A certain stable molten pool with a maximum surface area and a minimum depth exists and is proven to effectively remove Al and Ca. The energy utilization ratio during EBCM is also compared with that of electron beam melting (EBM). (C) 2012 Elsevier Ltd. All rights reserved.