发明名称 |
Vacuum refining furnace |
摘要 |
PCT No. PCT/JP98/00821 Sec. 371 Date Sep. 18, 1998 Sec. 102(e) Date Sep. 18, 1998 PCT Filed Feb. 27, 1998A refining furnace used for vacuum refining has a sealing cover mounted on the refining furnace so as to cover the furnace throat of the refining furnace and to be in close contact with a sealing flange (10) formed on the refining furnace. The adhesion of metal and slag to the sealing flange is prevented without using any flange cover. A sealing flange (10) is formed on the outer surface of the refining furnace (1) at a position on a conical part (8) extending between the furnace throat (9) and a straight body part or on the straight body part. A slag-stopping dummy flange (11) is formed on the outer surface of the refining furnace (1) at a position between a furnace throat (9) and the sealing flange (10). The slag-stopping dummy flange (11) has an outer circumference lying on the inner side of the inner circumference of a sealing cover (4) and on the outer side of the inner circumference of a lower end part of a dust collecting hood for atmospheric refining.
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申请公布号 |
US6162387(A) |
申请公布日期 |
2000.12.19 |
申请号 |
US19980000219 |
申请日期 |
1998.09.18 |
申请人 |
NIPPON STEEL CORPORATION |
发明人 |
SHIMOMURA, KENSUKE;IMOTO, TADASHI;OKIMORI, MAYUMI;OGAWA, GAKU;TANAKA, TOMOAKI |
分类号 |
C21C5/28;C21C7/10;C22B9/04;(IPC1-7):C21C7/10 |
主分类号 |
C21C5/28 |
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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