Indexed by:期刊论文

Date of Publication:2012-04-27

Journal:VACUUM

Included Journals:SCIE、EI、Scopus

Volume:86

Issue:10

Page Number:1417-1422

ISSN No.:0042-207X

Key Words:Electron beam melting; Molten silicon; Aluminium; Calcium; Impurities removal

Abstract: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.