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公开(公告)号：US4551173A
公开(公告)日：1985-11-05
申请号：US675947
申请日：1984-11-28
CPC分类号： C21C7/0075 , C21C5/52 , Y02P10/216
摘要： Molten steel is refined in a converter and is poured from the converter to a ladle. A ferro-alloy containing a component to be adjusted is added to the molten steel as needed. An amount of the alloy to be added to the molten steel in the ladle is calculated from a composition analysis value of the molten steel in the converter, and the amount of the alloy which is added when the molten steel is poured from the converter. The thus calculated amount of the alloy is added to the molten steel in the ladle. Electrodes are submerged in a slag layer on the molten steel so as to be arranged a predetermined distance from the molten steel. Power is supplied to the electrodes so as to generate electric arcs between the electrodes and the molten steel, thereby, arc-heating the molten steel. Simultaneously, a lance is submerged in the molten steel, and an Ar gas is injected in the molten steel therethrough, thus strirring the molten steel. Since deoxidation and composition adjustment of the molten steel can be simultaneously performed, processing time can be shortened.
摘要翻译： 熔炼钢在转炉中精炼，并从转炉浇注到钢包中。 根据需要将含有待调节成分的铁合金加入到钢水中。 根据转炉中的钢水的成分分析值和从转炉浇注钢水时所添加的合金量，计算钢包中钢水中添加的合金量。 将这样计算的合金量添加到钢包中的钢水中。 将电极浸没在钢水上的炉渣层中，以与钢水排列一定距离。 向电极供给电力，以在电极和钢水之间产生电弧，从而对钢水进行电弧加热。 同时，将喷枪淹没在钢水中，并且将Ar气体注入钢水中，从而使钢水分流。 由于可以同时进行钢水的脱氧和组成调整，因此可以缩短加工时间。
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公开(公告)号：US4551174A
公开(公告)日：1985-11-05
申请号：US674566
申请日：1984-11-26
CPC分类号： C21C7/0075 , C21C5/52 , Y02P10/216
摘要： Nondeoxidized molten steel is removed from a steel converter and poured into a ladle. Carbon electrodes are submerged in a slag layer on the molten steel and are separated by a predetermined distance from the molten steel. The electrodes are energized to generate arcs with the molten steel. Argon gas is blown into the molten steel through a lance submerged in the molten steel to stir the molten steel with the gas. The molten steel is arc-heated and at the same time stirred. Carbon in the molten steel reacts with residual unstable oxygen in the steel to deoxidize the molten steel. The molten steel is also decarburized, thereby preventing an increase in carbon content of the molten steel in the arc process.
摘要翻译： 从钢铁转炉中取出未脱硫的钢水，倒入钢包中。 碳钢电极浸没在钢水上的炉渣层中，与钢水分离预定距离。 电极通电以产生钢水。 氩气通过淹没在钢水中的喷枪吹入钢水中，用气体搅拌钢水。 钢水电弧加热，同时搅拌。 钢水中的碳与钢中残留的不稳定的氧气反应，使钢水脱氧。 钢水也脱碳，防止了电弧加工中钢水的碳含量增加。
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公开(公告)号：US4652308A
公开(公告)日：1987-03-24
申请号：US782527
申请日：1985-10-01
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.
摘要翻译： 本发明提供了一种通过从转炉中取出钢水而不进行脱氧，然后在钢渣精炼炉中对已经除去炉渣进行脱氧除铁的方法，以及通过将熔融的 来自转炉的钢在低于常规工艺的出钢温度下不脱氧，并且通过在已经除去炉渣的钢包精炼炉中对钢水进行脱氧和组成调整。
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公开(公告)号：US4652306A
公开(公告)日：1987-03-24
申请号：US782526
申请日：1985-10-01
CPC分类号： C21C5/5264 , C21C7/0075 , Y02P10/216
摘要： Molten steel is tapped from a converter into a refining ladle, and an ore such as Nb.sub.2 O.sub.3 ore is charged into the molten steel. Then, the interior of the refining ladle is held in an inert gas atmosphere. A reducing agent such as an Al reducing agent is charged into the molten steel. Electrodes are dipped in slag 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.
摘要翻译： 将熔炼钢从转炉中分离成精炼钢包，将诸如Nb2O3矿石的矿石装入钢水中。 然后，将精炼钢包的内部保持在惰性气体气氛中。 将还原剂如Al还原剂装入钢水中。 将电极浸入钢水中的渣中，在其间形成电弧，以使电弧加热。 矿石被还原剂还原，从而将矿石的金属成分加入到钢水中。 另一方面，可以使用在其下端具有供气口的碳电极将来自注入口的矿石粉末或颗粒注入电极和钢水之间的电弧。 用电弧热还原矿石，使钢水中加入所需的成分。
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公开(公告)号：US4552587A
公开(公告)日：1985-11-12
申请号：US674567
申请日：1984-11-26
CPC分类号： C21C7/0075 , C21C5/52 , Y02P10/216
摘要： The invention relates to a method of operating a ladle refining furnace for blowing Ar gas through bubbling lances submerged in molten steel in a ladle to stir the molten steel. The flow rate and the rate of change in the flow rate of the Ar gas blown through the bubbling lances are adjusted to prevent the iron lumps from attaching to the bubbling lances.
摘要翻译： 本发明涉及一种操作浇包精炼炉的方法，用于通过淹没在钢包中的钢水中的鼓泡枪吹入Ar气，以搅拌钢水。 调节通过鼓泡枪喷射的Ar气体的流量和流量变化率，以防止铁块附着在起泡枪上。
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公开(公告)号：US4674101A
公开(公告)日：1987-06-16
申请号：US782525
申请日：1985-10-01
申请人： Kazuhiko Matsuo , Teruyuki Hasegawa , Seigo Kuwano , Ryuji Yamaguchi , Akio Shiwata , Yoneichi Hamada , Yoshimi Komatsu , Tsuneo Kondo , Yusuke Shirotani , Hirohisa Nakashima , Yasuhiro Matsuda
发明人： Kazuhiko Matsuo , Teruyuki Hasegawa , Seigo Kuwano , Ryuji Yamaguchi , Akio Shiwata , Yoneichi Hamada , Yoshimi Komatsu , Tsuneo Kondo , Yusuke Shirotani , Hirohisa Nakashima , Yasuhiro Matsuda
CPC分类号： H05B7/12 , C21C5/52 , C21C7/0075 , F27B3/10 , F27D17/003 , Y02P10/216
摘要： The gap between an insertion hole formed in a covering of a ladle and an electrode inserted through the insertion hole is sealed by sealing means. The sealing means has a cap seal longitudinally and slidably fitted over the electrode. A base seal is hermetically disposed between the cap seal and the covering in such a manner that a gap is provided between the electrode and the base seal. The base seal has a gas injection nozzle intended to discharge a gas toward the electrode and another gas injection nozzle intended to discharge the gas downwardly. The use of the base and cap seals enables securing the sealing functions thereof despite any movement of the electrode, thus preventing the pickup of [N] as well as the reoxidation of molten steel. When a gas seal is effected by the formation of a flow of gas rotating around the electrode about the axis thereof, the sealing performance can be more enhanced. Further, when the base seal is cooled by causing cooling water to be circulated therethrough, its durability can also be enhanced.
摘要翻译： 形成在钢包的覆盖物中的插入孔与通过插入孔插入的电极之间的间隙由密封装置密封。 密封装置具有纵向和可滑动地装配在电极上的帽密封件。 基座密封件以这样的方式气密地设置在盖密封件和覆盖物之间，使得在电极和基座密封件之间设置间隙。 底部密封件具有用于将气体朝向电极排出的气体喷射喷嘴和用于向下排放气体的另一气体喷射喷嘴。 使用基座和盖子密封件可以确保其密封功能，尽管电极的任何移动，从而防止[N]的拾取以及钢水的再氧化。 当气体密封通过形成围绕电极围绕其轴线旋转的气体的流动而实现时，可以进一步提高密封性能。 此外，当通过使冷却水循环通过其来冷却基座密封件时，其耐久性也可以提高。
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公开(公告)号：US06316106B1
公开(公告)日：2001-11-13
申请号：US09230140
申请日：1999-01-19
申请人： Hideto Takasugi , Manabu Tano , Takeshi Ishii , Shinichi Akai , Akira Shirayama , Hirohisa Nakashima
发明人： Hideto Takasugi , Manabu Tano , Takeshi Ishii , Shinichi Akai , Akira Shirayama , Hirohisa Nakashima
IPC分类号： B32B516
CPC分类号： B22D41/46 , Y10T428/2982 , Y10T428/2991 , Y10T428/2993
摘要： A filler sand for a ladle tap hole valve contains 70 to 90 wt % of chromite sand and 10 to 30 wt % of silica sand and is blended externally with 0.05 to 5 wt % of carbon black calculated based on the total amount of the chromite sand and the silica sand; or contains 70 to 90 wt % of chromite sand and 10 to 30 wt % of silica sand, wherein the chromite sand has a particle diameter distribution such that 99% or more of the chromite sand consists of particles having diameters ranging from 150 to 850 &mgr;m and that 95% or more of the chromite sand consists of particles having diameters ranging from 200 to 600 &mgr;m, and the silica sand has a particle diameter distribution such that 95% or more of the silica sand consists of particles having diameters ranging from 150 to 850 &mgr;m and that 80% or more of the silica sand consists of particles having diameters ranging from 200 to 600 &mgr;m.
摘要翻译： 用于钢包排水孔的填料砂含有70-90重量％的铬铁矿砂和10-30重量％的硅砂，并与外部混合0.05至5重量％的基于铬铁矿砂总量计算的炭黑 和硅砂; 或含有70〜90重量％的铬铁矿砂和10〜30重量％的硅砂，其中铬铁矿砂的粒径分布使得99％以上的铬铁矿砂由直径150〜850μm的粒子组成 铬酸盐砂的95％以上由直径为200〜600μm的粒子组成，硅砂的粒径分布为95％以上的硅砂由直径为150〜 850μm，并且80％或更多的硅砂由直径范围为200-600μm的颗粒组成。
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公开(公告)号：US6051514A
公开(公告)日：2000-04-18
申请号：US11392
申请日：1998-04-07
申请人： Jun Ayama , Akira Ohashi , Manabu Tano , Hideto Takasugi , Akira Shirayama , Hirohisa Nakashima
发明人： Jun Ayama , Akira Ohashi , Manabu Tano , Hideto Takasugi , Akira Shirayama , Hirohisa Nakashima
IPC分类号： B22D41/46 , C04B35/12 , C04B35/105
CPC分类号： B22D41/46
摘要： A filler for a sliding gate containing 70 to 90 wt % of chromite sand and 10 to 30 wt % of silica sand in which the particle size distribution of the chromite sand is substantially from 500 to 1,000 .mu.m, which is not melted, sintered or penetrated by molten metal (molten steel) poured in a ladle in a steel works, and therefore is easily discharged to let the gate through.
摘要翻译： PCT No.PCT / JP96 / 02257 Sec。 371日期：1998年4月7日 102（e）1998年4月7日PCT PCT 1996年8月8日PCT公布。 公开号WO97 / 05978 日期1997年2月20日为含有70〜90重量％的铬铁矿砂和10〜30重量％的二氧化硅砂的滑动浇注填料，其中铬铁矿的粒度分布为500〜1000微米， 没有熔化，烧结或浸入钢液中浇注在钢包中的熔融金属（钢水），因此容易排出以使浇口通过。
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