发明名称 |
Metallurgical lance and apparatus |
摘要 |
A metallurgical lance for introducing gas from above into a volume of metal in a vessel includes a head having at least one ejector formed therein. The ejector includes a Laval nozzle surrounded by a shrouding gas passage. Both the Laval nozzle and the shrouding gas passage communicate at their proximal ends with a common gas supply chamber. The shrouding gas passage communicates with the chamber via a first annular orifice member which determines the percentage split of the gas flow through the chamber between the Laval nozzle and the shrouding gas passage.
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申请公布号 |
US6709630(B2) |
申请公布日期 |
2004.03.23 |
申请号 |
US20020307868 |
申请日期 |
2002.12.02 |
申请人 |
THE BOC GROUP, PLC. |
发明人 |
CAMERON ANDREW MILLER;FELDERMAN CHRISTIAN JUAN |
分类号 |
C21C5/46;(IPC1-7):C21C5/32 |
主分类号 |
C21C5/46 |
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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