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    PROCESS FOR PRODUCING MOLTEN STEEL USING GRANULAR METALLIC IRON
    1.
    发明申请
    PROCESS FOR PRODUCING MOLTEN STEEL USING GRANULAR METALLIC IRON 审中-公开
    生产使用细颗粒铁的钢的工艺

    公开(公告)号：US20130098202A1

    公开(公告)日：2013-04-25

    申请号：US13807442

    申请日：2011-06-27

    申请人： Osamu Tsuge ,  Itsuo Miyahara ,  Shuzo Ito

    发明人： Osamu Tsuge ,  Itsuo Miyahara ,  Shuzo Ito

    IPC分类号： C21C5/52

    CPC分类号： C21C5/52 ,  C21C5/5252 ,  C22B1/245 ,  C22B5/10 ,  Y02P10/214 ,  Y02P10/234

    摘要： A process for producing a molten steel (G) is disclosed in which particulate metallic iron can be more efficiently melted. The process includes the step of melting, in an electric arc furnace (2), all charge for iron which comprises: particulate metallic iron (A) produced by a method including a step in which a feed material comprising a carbonaceous reducing material and an iron oxide-containing substance is heated in a rotary hearth furnace (1) as a reducing/melting furnace and the iron oxide contained in the feed material is thereby reduced in the solid state to yield metallic iron and a step in which the resultant metallic iron is heated to a higher temperature to melt the metallic iron and the molten iron is aggregated while separating the iron from the slag (B); and scraps (D) which are another feed material for iron. The process is characterized in that the content of carbon in the particulate metallic iron (A) is regulated to 1.0-4.5 mass % and the carbon in the particulate metallic iron (A) is burned by oxygen blowing. The process is further characterized in that the particulate metallic iron (A) is used in an amount of 40-80 mass % with respect to all charge for iron and that the scraps (D) are initially charged into the electric arc furnace (2) to obtain molten iron (F) and then the particulate metallic iron (A) is continuously charged into the molten iron (F).

    摘要翻译： 公开了一种用于生产钢水（G）的方法，其中可以更有效地熔化颗粒状金属铁。 该方法包括在电弧炉（2）中熔化铁的所有装料，其包括：通过包括以下步骤的方法制备的颗粒状金属铁（A），其中包括含碳还原材料和铁 含氧物质在作为还原/熔融炉的旋转炉床炉（1）中被加热，并且由此在原料中包含的氧化铁在固态下降低以产生金属铁，并且所得到的金属铁为 加热到更高的温度以熔化金属铁，并且铁水从炉渣（B）分离时聚集; 和作为铁的另一种饲料的废料（D）。 该方法的特征在于，将金属铁颗粒（A）中的碳含量调节为1.0-4.5质量％，并且通过吹氧将金属铁颗粒（A）中的碳燃烧。 该方法的特征还在于，金属铁（A）的使用量相对于铁的所有电荷为40-80质量％，并且废料（D）最初被装入电弧炉（2） 以获得铁水（F），然后将颗粒金属铁（A）连续地装入铁水（F）中。

    FEEDING SYSTEM FOR REDUCED IRON MATERIAL
    3.
    发明申请
    FEEDING SYSTEM FOR REDUCED IRON MATERIAL 有权
    减少铁材料的进料系统

    公开(公告)号：US20130153368A1

    公开(公告)日：2013-06-20

    申请号：US13820263

    申请日：2011-08-31

    申请人： Osamu Tsuge ,  Tomoki Uemura

    发明人： Osamu Tsuge ,  Tomoki Uemura

    IPC分类号： B65G27/00

    CPC分类号： B65G27/00 ,  C21B13/0053 ,  C21B13/10 ,  F27B9/16 ,  F27B9/38 ,  F27D2003/0004

    摘要： Not only the cracking of granular reduced iron materials is reduced, but also reduced iron materials are fed uniformly onto a furnace floor regardless of a width of the furnace floor. A feeding system for reduced iron material includes a plurality of material feeding equipments 4 provided in a furnace width direction of a mobile furnace floor type reduction melting furnace, wherein each of the material feeding equipments 4 is constructed by a hopper 10 configured to receive reduced iron materials and discharge the materials from a discharge port 10a, a trough 14 configured to connect the discharge port 10a and a material charging portion of the mobile furnace floor type reduction melting furnace configured to receive the reduced iron materials discharged from the discharge port 10a, an exit portion provided on an exit side of the trough 14, and a vibration applying unit configured to cause the trough to vibrate along a furnace floor moving direction.

    摘要翻译： 不仅减少了粒状还原铁材料的破裂，而且还减少了铁材料均匀地进料到炉底，而不管炉底的宽度如何。 用于还原铁材料的进料系统包括设置在移动式炉底式还原熔炉的炉宽方向上的多个供料设备4，其中每个供料设备4由构造成容纳还原铁的料斗10构成 材料并从排出口10a排出材料，将构造成连接排出口10a的槽14和构造成容纳从排出口10a排出的还原铁物质的移动式炉底型减速熔炉的材料充填部， 设置在槽14的出口侧的出口部，以及构造成使槽沿着炉底移动方向振动的振动施加单元。

    Granulated metallic iron superior in rust resistance and method for producing the same
    4.
    发明授权
    Granulated metallic iron superior in rust resistance and method for producing the same 有权
    耐腐蚀性优异的颗粒状金属铁及其制造方法

    公开(公告)号：US08187359B2

    公开(公告)日：2012-05-29

    申请号：US12282187

    申请日：2006-03-24

    申请人： Koji Tokuda ,  Osamu Tsuge

    发明人： Koji Tokuda ,  Osamu Tsuge

    IPC分类号： C21B13/10 ,  C22B1/16

    CPC分类号： C21B13/10 ,  C21B13/0053 ,  C21B13/0093 ,  Y10T428/12181

    摘要： An object of the present invention is to provide a method for producing granulated metallic iron superior in rust resistance. Another object of the present invention is to provide a method for producing such granulated metallic iron. In the method, the granulated metallic iron is produced by agglomerating a material mixture including an iron-oxide-containing material and a carbonaceous reducing agent; charging and heating the agglomerated material mixture in a moving hearth-type reducing furnace to reduce the iron oxide in the material mixture with the carbonaceous reducing agent to obtain hot granulated metallic iron; and cooling the hot granulated metallic iron, wherein the hot granulated metallic iron is cooled while its relative position is changed; and an oxide coating is formed on the surface of the hot granulated metallic iron by bringing moisture into contact with almost the entire surface of the hot granulated metallic iron.

    摘要翻译： 本发明的目的在于提供一种耐锈性优异的造粒金属铁的制造方法。 本发明的另一个目的是提供一种生产这种颗粒状金属铁的方法。 在该方法中，颗粒状金属铁通过将包含含铁氧化物的材料和碳质还原剂的材料混合物凝聚而制成; 在移动的炉床式还原炉中加热和加热凝聚的材料混合物，以减少与碳质还原剂的材料混合物中的氧化铁，得到热颗粒金属铁; 并冷却热粒状金属铁，其中热粒状金属铁在其相对位置改变时被冷却; 并且通过使水分与热粒状金属铁的整个表面接触而在热粒状金属铁的表面上形成氧化物涂层。

    METHOD FOR PRODUCING GRANULAR IRON
    5.
    发明申请
    METHOD FOR PRODUCING GRANULAR IRON 审中-公开
    生产颗粒铁的方法

    公开(公告)号：US20110265603A1

    公开(公告)日：2011-11-03

    申请号：US13142368

    申请日：2010-01-15

    申请人： Takeshi Sugiyama ,  Shuzo Ito ,  Osamu Tsuge ,  Shoichi Kikuchi

    发明人： Takeshi Sugiyama ,  Shuzo Ito ,  Osamu Tsuge ,  Shoichi Kikuchi

    IPC分类号： B22F9/20

    CPC分类号： C21B13/105 ,  C21B13/0046 ,  C21B13/0073 ,  Y02P10/136

    摘要： A method for producing granular iron comprising: charging agglomerates formed from a raw material mixture containing an iron oxide-containing substance and a carbonaceous reducing agent onto a carbonaceous material spread on a hearth of a furnace; and heating the agglomerates to thereby reduce and melt iron oxides in the agglomerates, wherein the temperature of the agglomerates in the furnace is set in a range between 1200° C. and 1500° C.; the oxygen partial pressure in atmospheric gas under which the agglomerates are heated is set to 2.0×10−13 atm or more at standard state; and the linear speed of the atmospheric gas in the furnace is set to 4.5 cm/second or more.

    摘要翻译： 一种生产粒状铁的方法，包括：将含有含铁氧化物的物质和碳质还原剂的原料混合物形成的附聚物装入铺在炉底上的碳质材料上; 并且对附聚物进行加热，从而减少和熔化附聚物中的氧化铁，其中炉中的附聚物的温度设定在1200℃至1500℃的范围内; 在标准状态下将附聚物加热的大气中的氧分压设定为2.0×10-13atm以上; 并且炉中的气氛气体的线速度设定为4.5cm /秒以上。

    Method for producing metallic iron
    8.
    发明申请
    Method for producing metallic iron 审中-公开
    金属铁生产方法

    公开(公告)号：US20060096675A1

    公开(公告)日：2006-05-11

    申请号：US10542359

    申请日：2004-01-16

    申请人： Shoichi Kikuchi ,  Osamu Tsuge ,  Gilbert Whitten ,  Brian Voelker

    发明人： Shoichi Kikuchi ,  Osamu Tsuge ,  Gilbert Whitten ,  Brian Voelker

    IPC分类号： C21D1/84

    CPC分类号： C21B13/008 ,  C21B13/0006 ,  C21B13/0066 ,  C21B13/105 ,  C22B1/245 ,  F27B9/16 ,  F27D1/0006 ,  Y02P10/136

    摘要： An object of the present invention is to provide a method for producing metallic iron, in which after a mixture including a carbonaceous reducing agent and iron oxide is fed onto a hearth of a moving hearth reducing-melting furnace and is then heated so that the iron oxide is reduced and melted, metallic iron to be obtained is cooled and is then discharged outside the furnace for recovery. In the method described above, even when powdered metallic iron is squeezed into the surface of the hearth, or the hearth is damaged by slag infiltration and corrosion, the removal and repair can be easily performed, the operation rate and maintenability of the hearth can be improved, and hence a long continuous operation can be suitably performed. According to the present invention, metallic iron is produced by the steps of, prior to the feed of raw agglomerates, bedding a granular hearth material on the moving hearth for forming a layered renewable hearth, which can be renewed; removing part or the entirety of the renewable hearth, which was degraded during operation, and then newly feeding the hearth material for forming a new renewable hearth; leveling the surface of the newly formed hearth; and subsequently feeding the mixture.

    摘要翻译： 本发明的目的是提供一种金属铁的制造方法，其中将含有碳质还原剂和氧化铁的混合物供给到移动的炉床还原熔融炉的炉床上，然后加热，使铁 氧化物被还原和熔化，所得到的金属铁被冷却，然后排出炉外进行回收。 在上述方法中，即使粉末状的金属铁被挤压到炉床的表面，或者炉底被熔渣腐蚀而损坏的情况下，可以容易地进行除去和修理，炉床的运转率和可维护性可以 可以适当地进行长连续的操作。 根据本发明，通过以下步骤制造金属铁，在原料团聚体的供给之前，将活性炉床上的粒状炉床材料层叠，形成可更新的层状可再生炉床; 去除在运行期间退化的可再生炉床的一部分或全部，然后新加入用于形成新的可再生炉床的炉床材料; 平整新形成的炉膛的表面; 并随后进料该混合物。

    Feeding system for reduced iron material
    10.
    发明授权
    Feeding system for reduced iron material 有权
    还原铁材料进料系统

    公开(公告)号：US08915352B2

    公开(公告)日：2014-12-23

    申请号：US13820263

    申请日：2011-08-31

    申请人： Osamu Tsuge ,  Tomoki Uemura

    发明人： Osamu Tsuge ,  Tomoki Uemura

    IPC分类号： B65G27/00 ,  C21B13/00 ,  C21B13/10 ,  F27B9/16 ,  F27B9/38 ,  F27D3/00

    CPC分类号： B65G27/00 ,  C21B13/0053 ,  C21B13/10 ,  F27B9/16 ,  F27B9/38 ,  F27D2003/0004

    摘要： Not only the cracking of granular reduced iron materials is reduced, but also reduced iron materials are fed uniformly onto a furnace floor regardless of a width of the furnace floor. A feeding system for reduced iron material includes a plurality of material feeding equipments 4 provided in a furnace width direction of a mobile furnace floor type reduction melting furnace, wherein each of the material feeding equipments 4 is constructed by a hopper 10 configured to receive reduced iron materials and discharge the materials from a discharge port 10a, a trough 14 configured to connect the discharge port 10a and a material charging portion of the mobile furnace floor type reduction melting furnace configured to receive the reduced iron materials discharged from the discharge port 10a, an exit portion provided on an exit side of the trough 14, and a vibration applying unit configured to cause the trough to vibrate along a furnace floor moving direction.

    摘要翻译： 不仅减少了粒状还原铁材料的破裂，而且还减少了铁材料均匀地进料到炉底，而不管炉底的宽度如何。 用于还原铁材料的进料系统包括设置在移动式炉底式还原熔炉的炉宽方向上的多个供料设备4，其中每个供料设备4由构造成容纳还原铁的料斗10构成 材料并从排出口10a排出材料，将构造成连接排出口10a的槽14和构造成容纳从排出口10a排出的还原铁物质的移动式炉底型减速熔炉的材料充填部， 设置在槽14的出口侧的出口部，以及构造成使槽沿着炉底移动方向振动的振动施加单元。