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公开(公告)号：EP0179336B1
公开(公告)日：1989-03-29
申请号：EP85112613.6
申请日：1985-10-04
CPC分类号： C21C5/5264 , C21C7/0075 , Y02P10/216
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公开(公告)号：EP0179337B1
公开(公告)日：1991-01-23
申请号：EP85112614.4
申请日：1985-10-04
CPC分类号： C21C5/28 , C21C7/0075 , C21C7/06
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公开(公告)号：EP0177908B1
公开(公告)日：1991-01-30
申请号：EP85112612.8
申请日：1985-10-04
发明人： Matsuo, Kazuhiko , Hasegawa, Teruyuki , Kuwano, Seigo , Yamaguchi, Ryuji , Shiwata, Akio , Hamada, Yoneichi , Komatsu, Yoshimi , Kondo, Tsuneo , Shirotani, Yusuke , Nakashima, Hirohisa , Matsuda, Yasuhiro
CPC分类号： H05B7/12 , C21C5/52 , C21C7/0075 , F27B3/10 , F27D17/003 , Y02P10/216
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公开(公告)号：EP0179337A1
公开(公告)日：1986-04-30
申请号：EP85112614.4
申请日：1985-10-04
CPC分类号： C21C5/28 , C21C7/0075 , C21C7/06
摘要： The invention provides a process for obtaining low-nitrogen steel by tapping molten steel from a converter without deoxidizing and by then deoxidizing the molten steel in a ladle refining furnace from which slag has been removed, and a process for obtaining low phosphorus steel by tapping molten steel from a converter without deoxidation at a tapping temperature lower than conventional processes, and by performing deoxidation and composition adjustment of the molten steel in a ladle refining furnace from which slag has been removed.
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公开(公告)号：EP0179336A1
公开(公告)日：1986-04-30
申请号：EP85112613.6
申请日：1985-10-04
CPC分类号： C21C5/5264 , C21C7/0075 , Y02P10/216
摘要： Molten steel (6) is tapped from a converter into a refining ladle (2) and ore such as Nb 2 0 3 ore is charged into the molten steel (6). Then. the interior of the refining ladle (2) is held in an inert gas atmosphere. A reducing agent such as an At reducing agent is charged into the molten steel. Electrodes (10) are dipped in slag (8) on the molten steel to form an arc therebetween so as to heat the molten steel with an arc. The ore is reduced by the reducing agent, so that a metallic component of the ore is added to the molten steel. On the other hand, carbon electrodes each having a gas supply port at its lower end can be used to inject an ore powder or particles from the injection ports to the arc between the electrodes and molten steel. The ore is reduced by electrode carbon with arc heat, so that a desired component is added to the molten steel.
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6.发明公开Arc-heating type extra-furnace refining apparatus 失效Anlage zum Frischen mit einemzusätzlichenLichtbogenofen。
公开(公告)号：EP0177908A1
公开(公告)日：1986-04-16
申请号：EP85112612.8
申请日：1985-10-04
发明人： Matsuo, Kazuhiko , Hasegawa, Teruyuki , Kuwano, Seigo , Yamaguchi, Ryuji , Shiwata, Akio , Hamada, Yoneichi , Komatsu, Yoshimi , Kondo, Tsuneo , Shirotani, Yusuke , Nakashima, Hirohisa , Matsuda, Yasuhiro
CPC分类号： H05B7/12 , C21C5/52 , C21C7/0075 , F27B3/10 , F27D17/003 , Y02P10/216
摘要： @ A gap (32) between an insertion hole (24) formed in a covering (22) of a ladle (2) and an electrode (20) inserted through the insertion hole (24) is sealed by sealing means (26, 28). The sealing means (26, 28) have a cap seal (28) longitudinally and slidably fitted over the electrode (20). A base seal (26) is hermetically disposed between the cap seal (28) and the covering (22) in such a manner that the gap (32) is provided between the electrode (20) and the base seal (26). The base seal (26) has a gas injection nozzle (38) intended to discharge a gas towards the electrode (20) and another gas injection nozzle (40) intended to discharge the gas downwardly.
The base seal may be cooled by causing cooling water to be circulated therethrough.摘要翻译： 形成在浇包（2）的覆盖物（22）中的插入孔（24）和插入穿过插入孔（24）的电极（20）之间的间隙（32）被密封装置（26,28）密封。 密封装置（26,28）具有纵向和可滑动地装配在电极（20）上的盖密封件（28）。 基座密封件（26）以这样的方式气密地设置在盖密封件（28）和覆盖件（22）之间，使得间隙（32）设置在电极（20）和基座密封件（26）之间。 基座密封件（26）具有用于将气体朝向电极（20）排出的气体喷射喷嘴（38）和用于向下排放气体的另一气体喷射喷嘴（40）。 可以通过使冷却水循环通过其来冷却基座密封。
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