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公开(公告)号：US5479433A
公开(公告)日：1995-12-26
申请号：US162344
申请日：1993-12-03
CPC分类号： H05B7/06 , C21C5/5229 , F27B3/085 , F27D2099/0023 , Y02P10/216
摘要： A DC arc furnace according to the invention has a bottom electrode, which comprises a plurality of contact pins each having an end to be brought into contact with an object and to supply arc-forming current thereto, a current base electrically connected to the other end of each of the contact pins for distributing current from a power supply to the contact pins, and a cooling device for cooling the current base with the use of cooling water.
摘要翻译： 根据本发明的DC电弧炉具有底部电极，该底部电极包括多个接触针，每个接触针具有与物体接触的端部并且向其提供电弧形成电流;电流基座，电连接到另一端 用于将电流从电源分配到接触针的每个接触针;以及冷却装置，用于使用冷却水冷却电流基座。
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2.发明授权
公开(公告)号：US5189682A
公开(公告)日：1993-02-23
申请号：US857737
申请日：1992-03-26
申请人： Toshimichi Maki , Takato Matsuo
发明人： Toshimichi Maki , Takato Matsuo
CPC分类号： H05B7/144 , C21C5/5229 , Y02P10/216 , Y02P10/256 , Y02P10/259
摘要： The invention provides a direct current electric arc furnace which is composed of a feeding system of direct current to the furnace, a movable electrode at the roof of the furnace, and a bottom electrode attached to the bottom of the furnace at the position deviated from the center of the bottom of the furnace, the deviated distance from the center being determined by a magnetic field, generated by a current in the steel bath of the furnace, from under an arc generated by the movable electrode to the bottom electrode, which can cancel a second magnetic field generated by the current of the feeding system.
摘要翻译： 本发明提供一种直流电弧炉，其由直接送入炉内的供电系统，炉顶部的可动电极，以及在与炉子底部偏离的位置附着在炉底部的底电极 炉底部的中心，从由可动电极产生的电弧下降到底部电极的由电磁炉中的电流产生的磁场由中心的偏离距离可以取消 由馈电系统的电流产生的第二磁场。
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公开(公告)号：US5138629A
公开(公告)日：1992-08-11
申请号：US601997
申请日：1990-10-23
申请人： Toshimichi Maki , Takato Matsuo
发明人： Toshimichi Maki , Takato Matsuo
CPC分类号： H05B7/144 , C21C5/5229 , Y02P10/216 , Y02P10/256 , Y02P10/259
摘要： The invention provides a direct current electric arc furnace which is composed of a feeding system of direct current to the furnace, a movable electrode at the roof of the furnace, and a bottom electrode attached to the bottom of the furnace at the position deviated from the center of the bottom of the furnace, the deviated distance from the center being determined by a magnetic field, generated by a current in the steel bath of the furnace, from under an arc generated by the movable electrode to the bottom electrode, which can cancel a second magnetic field generated by the current of the feeding system.
摘要翻译： 本发明提供一种直流电弧炉，其由直接送入炉内的供电系统，炉顶部的可动电极，以及在与炉子底部偏离的位置附着在炉底部的底电极 炉底部的中心，从由可动电极产生的电弧下降到底部电极的由电磁炉中的电流产生的磁场由中心的偏离距离可以取消 由馈电系统的电流产生的第二磁场。
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公开(公告)号：US06693948B2
公开(公告)日：2004-02-17
申请号：US10427488
申请日：2003-05-01
申请人： Hideaki Mizukami , Ryuji Yamaguchi , Takashi Nakayama , Teruo Tatefuku , Norio Ao , Toshimichi Maki , Yasuhiro Sato , Hirotsugu Kubo
发明人： Hideaki Mizukami , Ryuji Yamaguchi , Takashi Nakayama , Teruo Tatefuku , Norio Ao , Toshimichi Maki , Yasuhiro Sato , Hirotsugu Kubo
IPC分类号： F27D1300
CPC分类号： C21C5/565 , F27B3/06 , F27B3/065 , F27B3/085 , F27B3/186 , F27B3/225 , F27D3/0027 , F27D3/1509 , F27D13/002 , F27D2003/161 , F27D2003/168 , Y02P10/216
摘要： The present invention provides an arc-melting apparatus which attains extremely high efficiency by preheating scraps using exhaust gas from the melting chamber. The arc-melting apparatus needs for no device to carry and supply an iron source to a melting chamber, which makes it possible to preheat the next charge. The arc-melting apparatus has a melting furnace which melts scraps, a preheating shaft connected directly to an upper part of one side of the melting furnace, an arc electrode for melting scraps in the melting furnace, a bucket for supplying scraps to the preheat shaft so as to continuously maintain scraps in the melting furnace and in the preheating shaft, a tapping portion having a tapping hole, being projected outward from the melting furnace and a tilting device for tilting the melting furnace on a side of the tapping portion. The tapping portion is arranged at an orthogonal direction to the direction of the supplied cold iron source. The preheating shaft of the melting furnace and the tapping portion have a distance between the mutual part, so that scraps do not flow out on a the tapping hole side.
摘要翻译： 本发明提供一种电弧熔融装置，其通过使用来自熔融室的排气预热废料而获得极高的效率。 电弧熔化装置不需要装置将铁源运送和供应到熔化室，这使得可以预热下一次充电。 该电弧熔融装置具有：熔融炉的熔化炉，直接与熔融炉一侧的上部连接的预热轴，熔融炉内的熔融物用的电弧电极，向预热轴供给废料的斗 以便在熔化炉和预热轴中连续地保持废料，具有从熔炉向外突出的出钢孔的攻丝部分和用于使熔化炉在出钢部分侧倾斜的倾斜装置。 攻丝部分配置在与供应的冷铁源方向正交的方向上。 熔化炉的预热轴和攻丝部分在相互的部分之间具有距离，使得废料在出钢孔侧不流出。
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公开(公告)号：US4373911A
公开(公告)日：1983-02-15
申请号：US292678
申请日：1981-08-13
CPC分类号： C21C5/565 , F27D13/002 , F27D17/00 , Y02P10/216 , Y02P10/283
摘要： An apparatus for preheating steel scrap comprises: a preheating vessel, having an open top and a bottom lid capable of being opened and closed, for receiving and preheating steel scrap, said preheating vessel being adapted to receive steel scrap to be preheated from said open top and to discharge the steel scrap preheated in said preheating vessel by opening said bottom lid; a hood downwardly flaring for covering said open top of said preheating vessel, said hood being movable from said open top of said preheating vessel and adapted to introduce high-temperature waste gases discharged from a steel-refining metallurgical furnace into said preheating vessel; a pit for housing said preheating vessel, said pit being provided with a duct for discharging to the outside said waste gases discharged into said pit from the bottom of said preheating vessel after preheating said steel scrap received in said preheating vessel; and, a canopy for sealing the gap between said pit and said preheating vessel housed in said pit, the gap between the periphery of said canopy and said pit being liquid-sealed. The apparatus is characterized in that: said canopy is gas-tightly fixed to said hood; and, the gap between said canopy and said preheating vessel housed in said pit is sealed by an expansion bellows fixed at an end thereof to said canopy.
摘要翻译： 一种用于预热废钢的设备包括：预热容器，具有能够打开和关闭的开口顶部和底部盖，用于接收和预热废钢，所述预热容器适于接收待从所述开口顶部预热的废钢 并且通过打开所述底盖来排出在所述预热容器中预热的废钢; 用于覆盖所述预热容器的所述开口顶部的罩子向下延伸，所述罩可从所述预热容器的所述开口顶部移动，并适于将从炼钢冶炼炉排出的高温废气引入所述预热容器中; 用于容纳所述预热容器的凹坑，所述凹坑设置有用于在预热所述预热容器中接收的所述钢屑之后，将从所述预热容器的底部排放到所述凹坑中的废气排放到外部的管道; 以及用于密封所述凹坑和容纳在所述凹坑中的所述预热容器之间的间隙的盖子，所述顶盖周边与所述凹坑之间的间隙被液体密封。 该装置的特征在于：所述罩盖气密地固定在所述罩上; 并且所述冠层和容纳在所述凹坑中的所述预热容器之间的间隙由固定在其顶端的膨胀波纹管密封。
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公开(公告)号：US06597722B2
公开(公告)日：2003-07-22
申请号：US09775153
申请日：2001-02-01
申请人： Hideaki Mizukami , Ryuji Yamaguchi , Norio Ao , Toshimichi Maki
发明人： Hideaki Mizukami , Ryuji Yamaguchi , Norio Ao , Toshimichi Maki
IPC分类号： F27D1300
CPC分类号： C21C5/565 , F27B3/06 , F27B3/065 , F27B3/085 , F27B3/186 , F27B3/225 , F27D3/0027 , F27D3/1509 , F27D13/002 , F27D2003/161 , F27D2003/168 , Y02P10/216
摘要： The present invention provides an arc-melting apparatus, which attains extremely high efficiency by preheating scraps using exhaust gas from the melting chamber. The arc-melting apparatus needs for no device to carry and supply an iron source to a melting chamber, which makes it possible to preheat the next charge. The arc-melting apparatus has a melting furnace which melts scraps, a preheating shaft connected directly to an upper part of one side of the melting furnace, an arc electrode for melting scraps in the melting furnace, a bucket for supplying scraps to the preheat shaft so as to continuously maintain scraps in the melting furnace and in the preheating shaft, a tapping portion having a tapping hole, being projected outward from the melting furnace and a tilting device for tilting the melting furnace on a side of the tapping portion. The tapping portion is arranged at an orthogonal direction to the direction of the supplied cold iron source. The preheating shaft of the melting furnace and the tapping portion have a distance between the mutual part, so that scraps do not flow out on a the tapping hole side.
摘要翻译： 本发明提供了一种电弧熔化装置，其通过使用来自熔化室的废气预热废料而获得极高的效率。 电弧熔化装置不需要装置将铁源运送和供应到熔化室，这使得可以预热下一次充电。 该电弧熔融装置具有：熔融炉的熔化炉，直接与熔融炉一侧的上部连接的预热轴，熔融炉内的熔融物用的电弧电极，向预热轴供给废料的斗 以便在熔化炉和预热轴中连续地保持废料，具有从熔炉向外突出的出钢孔的攻丝部分和用于使熔化炉在出钢部分侧倾斜的倾斜装置。 攻丝部分配置在与供应的冷铁源方向正交的方向上。 熔化炉的预热轴和攻丝部分在相互的部分之间具有距离，使得废料在出钢孔侧不流出。
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7.发明授权
公开(公告)号：US4375958A
公开(公告)日：1983-03-08
申请号：US268797
申请日：1981-06-01
CPC分类号： F27D13/002 , F27D19/00 , F27D2099/0048
摘要： A method for preheating steel scrap by an exhaust gas from a steelmaking electric furnace, which comprises: directing, when manufacturing steel from steel scrap in an electric furnace, an exhaust gas produced in said electric furnace to an exhaust gas combustion chamber provided in the middle of a discharge duct of said exhaust gas to cause combustion of carbon monoxide contained in said exhaust gas to form a combustion exhaust gas; and selectively directing part of said combustion exhaust gas into at least one scrap preheating chamber provided in the middle of a branch duct branching off from said discharge duct to preheat steel scrap charged in said scrap preheating chamber to a prescribed temperature; said method being characterized by: feeding back all of said combustion exhaust gas after preheating said steel scrap charged in said scrap preheating chamber to said exhaust gas combustion chamber to cause combustion of an incomplete-combustion gas which is produced by the incomplete combustion of combustible substances entrapped in said steel scrap and which is contained in said combustion exhaust gas.
摘要翻译： 一种用于从炼钢电炉中排出的废钢预热方法，其特征在于：当在电炉中从废钢中制造钢时，将在所述电炉中产生的废气引导到设在中间的废气燃烧室 所述废气的排放管道引起所述废气中包含的一氧化碳的燃烧以形成燃烧废气; 并且将所述燃烧废气的一部分选择性地引导到设置在从所述排放管道分支出的分支管道的中间的至少一个废料预热室中，以将装载在所述废料预热室中的废钢预热到规定温度; 所述方法的特征在于：在将所述废料预热室中装入的所述废钢预热到所述排气燃烧室之后，将所有所述燃烧废气反馈，以引起由可燃物质的不完全燃烧产生的不完全燃烧气体 包埋在所述废钢中并且被包含在所述燃烧废气中。
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