发明名称 |
SETT ATT AVKOLA OCH RAFFINERA STAL I VAKUUM |
摘要 |
The invention relates to a refining lance used in blowing some additive into molten metal in a vacuum vessel when molten metal, such as molten steel, refined by employing a converter or electric furnace or the like is further refined into a metal having the desired composition. The lance includes a center hole for jetting the additive in the presence of gas and a plurality of side holes (Laval nozzle holes) for supply of accelerating gas so as to have the additive effectively added to the molten metal. The invention also proposes a method for producing low-carbon high-purity steels in molten state by using the refining lance. |
申请公布号 |
SE451199(B) |
申请公布日期 |
1987.09.14 |
申请号 |
SE19820007331 |
申请日期 |
1982.12.22 |
申请人 |
SUMITOMO KINZOKU KOGYO KABUSHIKI GAISHA |
发明人 |
K * SHIMME;T * AOKI;M * TAGA |
分类号 |
C21C5/46;C21C7/10;(IPC1-7):C21C7/10 |
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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