| 发明名称 |
Production of ferrochromium alloys |
| 摘要 |
Ferrochromium alloys are prepared by vacuum reduction of chromite concentrate by means of a carbonaceous reductant, followed by melting in the presence of slag-forming materials to produce the alloy and a separate slag phase. Preferably, CaO is employed as an ingredient in both the reduction step and the melting step.
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| 申请公布号 |
US4306905(A) |
申请公布日期 |
1981.12.22 |
| 申请号 |
US19800197864 |
申请日期 |
1980.10.17 |
| 申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE INTERIOR |
发明人 |
PAHLMAN, JOHN E.;KHALAFALLA, SANAA E. |
| 分类号 |
C22C35/00;(IPC1-7):C22C33/00 |
主分类号 |
C22C35/00 |
| 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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