发明名称 |
Addition of calcium compounds to the carbothermic reduction of silica. |
摘要 |
<p>What is described is an improvement to a process for the preparation of silicon from the reduction of silicon dioxide with a solid carbonaceous reducing agent, the improvement comprising feeding calcium compounds into the reaction zone of a silicon furnace, and controlling and maintaining a desired calcium level in the reaction zone of the silicon furnace. The calcium compounds may be fed to the silicon furnace as a constituent of either the silicon dioxide or solid carbonaceous reducing agent feeds, as a separate feed, or as a combination of two or more of these feeds. Also described is an improvement to a process for the preparation of silicon carbide from the reduction of silicon dioxide with a solid carbonaceous reducing agent.</p> |
申请公布号 |
EP0272777(A2) |
申请公布日期 |
1988.06.29 |
申请号 |
EP19870309306 |
申请日期 |
1987.10.21 |
申请人 |
DOW CORNING CORPORATION |
发明人 |
DOSAJ, VISHU DUTT;TRUNZO, JAMES EDWARD;FILSINGER, DANIEL HOWARD |
分类号 |
C01B33/02;C01B31/36;C01B33/025;(IPC1-7):C01B33/02 |
主分类号 |
C01B33/02 |
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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