发明名称 |
METHOD OF STIRRING MOLTEN METAL AND REFRACTORY CYLINDER FOR THE PURPOSE |
摘要 |
<p>A method of stirring molten metal by repeatedly sucking and rapidly discharging part of the molten metal into and out of a refractory cylinder having a lower opening end immersed in the molten metal in a ladle, comprises operating the stirring under a condition that an inner diameter (d) of the refractory cylinder is less than 1,000 mm, a relation between the inner diameter (d, mm) of the refractory cylinder and weight (W, ton) of the molten metal in the ladle is d/W0.5>30, and an immersed depth of the refractory cylinder is within 200-700 mm. A pressurized gas for discharging the sucked molten metal out of the cylinder is introduced thereinto in an inclined direction relative to a vertical line against a point on an opposite inner wall of the cylinder at least 500 mm above the maximum suction level of the molten metal in the cylinder. A refractory cylinder operated in the above manner according to the invention comprises a flange connection between an uppermost and an intermediate cylinder parts of the cylinder at a location higher than the maximum suction height of the molten metal and a further flange connection between the intermediate cylinder part and a lowermost cylinder part. The refractory cylinder comprises at its immersed end a flow restricting opening to obtain more strong stirring the molten metal.</p> |
申请公布号 |
EP0099435(B1) |
申请公布日期 |
1987.01.07 |
申请号 |
EP19820305849 |
申请日期 |
1982.11.03 |
申请人 |
KAWASAKI STEEL CORPORATION |
发明人 |
OGUCHI, YUKIO;EMI, TOSHIHIKO;SUMIDA, NORIO;FUJIMURA, TOSHIO;FUJII, TETSUYA;UEDA, ARATA |
分类号 |
B01F5/10;B01F11/00;C21C7/00;C21C7/10;C22B9/02;C22B21/00;F27D27/00;(IPC1-7):F27D23/04;B01F5/12;C22B9/05 |
主分类号 |
B01F5/10 |
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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