发明名称 |
METALLIC SILICON AND PROCESS FOR PRODUCING THE SAME |
摘要 |
This metallic silicon is manufactured by refining molten crude metallic silicon by unidirectional solidification, and has a purity of 3N or more to 6N or less and an average crystal grain diameter of 1 mm or more. This method for manufacturing the metallic silicon includes: solidifying molten crude metallic silicon in a mold which contains fine silica particles in an inner peripheral layer thereof by unidirectional solidification at a rate of 1 mm/min or less; and then cooling to 200°C or below at a rate of 2°C/min or less.
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申请公布号 |
EP2058279(A1) |
申请公布日期 |
2009.05.13 |
申请号 |
EP20070806497 |
申请日期 |
2007.08.31 |
申请人 |
MITSUBISHI MATERIALS CORPORATION;JEMCO INC. |
发明人 |
TSUZUKIHASHI, KOUJI;IKEDA, HIROSHI;YANAGIMACHI, ATSUO;WAKITA, SABURO |
分类号 |
C01B33/037;B22D21/00;B22D27/04;C30B11/00;C30B29/06 |
主分类号 |
C01B33/037 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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