| 发明名称 |
Introduction of substances into molten metal |
| 摘要 |
A valve assembly for insertion into the bottom of a ladle for molten metal comprises refractory upper and lower parts defining a flow passage with an enlarged central region containing a valve head. The valve head is moved by a spindle to control the flow of gas injected through the valve into the metal.
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| 申请公布号 |
US4470582(A) |
申请公布日期 |
1984.09.11 |
| 申请号 |
US19830465552 |
申请日期 |
1983.02.10 |
| 申请人 |
ZIRCONAL PROCESSES LIMITED |
发明人 |
SHAW, RICHARD D.;DAVIS, RICHARD P. B. |
| 分类号 |
B22D1/00;B22D41/42;C21C5/48;C22B9/10;(IPC1-7):C21B7/16 |
主分类号 |
B22D1/00 |
| 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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