公开(公告)号：US06413295B2

公开(公告)日：2002-07-02

申请号：US09266989

申请日：1999-03-12

申请人： David C. Meissner ,  Glenn E. Hoffman ,  Kyle J. Shoop ,  Takuya Negami ,  Akira Uragami ,  Yasuhiro Tanigaki ,  Shuzo Ito ,  Isao Kobayashi ,  Osamu Tsuge ,  Koji Tokuda ,  Shoichi Kikuchi

发明人： David C. Meissner ,  Glenn E. Hoffman ,  Kyle J. Shoop ,  Takuya Negami ,  Akira Uragami ,  Yasuhiro Tanigaki ,  Shuzo Ito ,  Isao Kobayashi ,  Osamu Tsuge ,  Koji Tokuda ,  Shoichi Kikuchi

IPC分类号： C21B1310

CPC分类号： C21B13/10 ,  C21B13/105 ,  Y02P10/136

摘要： The present invention is an apparatus and method for the direct reduction of iron oxide utilizing a rotary hearth furnace to form a high purity carbon-containing iron metal button. The hearth layer may be a refractory or a vitreous hearth layer of iron oxide, carbon, and silica compounds. Additionally, coating materials may be introduced onto the refractory or vitreous hearth layer before iron oxide ore and carbon materials are added, with the coating materials preventing attack of the molten iron on the hearth layer. The coating materials may include compounds of carbon, iron oxide, silicon oxide, magnesium oxide, and/or aluminum oxide. The coating materials may be placed as a solid or a slurry on the hearth layer and heated, which provides a protective layer onto which the iron oxide ores and carbon materials are placed. The iron oxide is reduced and forms molten globules of high purity iron and residual carbon, which remain separate from the hearth layer. An improved apparatus includes a cooling plate that is placed in close proximity with the refractory or vitreous hearth layer, cooling the molten globules to form iron metal buttons that are removed from the hearth layer. The improvements due to the present apparatus and method of operation provide high purity iron and carbon solid buttons, which are separate from slag particulates, and discharged without significant loss of iron product to the interior surfaces of the furnace.

摘要翻译： 本发明是利用旋转炉床炉直接还原氧化铁以形成高纯度含碳铁金属按钮的装置和方法。 炉床层可以是氧化铁，碳和二氧化硅化合物的耐火材料或玻璃质炉床层。 此外，在添加氧化铁矿石和碳材料之前，可以将涂层材料引入耐火玻璃炉床层，涂层材料防止炉底层上的铁水的侵蚀。 涂层材料可以包括碳，氧化铁，氧化硅，氧化镁和/或氧化铝的化合物。 涂层材料可以作为固体或浆料放置在炉床层上并被加热，这提供了氧化铁矿石和碳材料放置在其上的保护层。 氧化铁被还原，形成高纯铁和剩余碳的熔池，它们与炉底层分开。 一种改进的装置包括一个靠近耐火玻璃炉底层放置的冷却板，冷却熔池以形成从炉床层去除的铁金属纽扣。 由于本设备和操作方法的改进提供了与炉渣微粒分离的高纯度铁和碳固体按钮，并且在铁的内表面没有显着损失的铁排出。

公开(公告)号：US07938883B2

公开(公告)日：2011-05-10

申请号：US11855793

申请日：2007-09-14

申请人： Takuya Negami ,  Kazuo Kunii ,  Shinichi Inaba ,  Masataka Shimizu ,  Isao Kobayashi ,  Yoshimichi Takenaka ,  Toshihide Matsumura ,  Akira Uragami ,  Takashi Kujirai ,  Osamu Tsuchiya ,  Kimio Sugiyama ,  Shuzo Ito ,  Shoichi Kikuchi

发明人： Takuya Negami ,  Kazuo Kunii ,  Shinichi Inaba ,  Masataka Shimizu ,  Isao Kobayashi ,  Yoshimichi Takenaka ,  Toshihide Matsumura ,  Akira Uragami ,  Takashi Kujirai ,  Osamu Tsuchiya ,  Kimio Sugiyama ,  Shuzo Ito ,  Shoichi Kikuchi

IPC分类号： C21B13/00 ,  C21B13/08 ,  C21B13/10

CPC分类号： C21B13/0046 ,  C21B13/105 ,  Y02P10/136 ,  Y10T428/2991

摘要： A method of making metallic iron in which a compact, containing iron oxide such as iron ore or the like and a carbonaceous reductant such as coal or the like, is used as material, and the iron oxide is reduced through the application of heat, thereby making metallic iron. In the course of this reduction, a shell composed of metallic iron is generated and grown on the surface of the compact, and slag aggregates inside the shell. This reduction continues until substantially no iron oxide is present within the metallic iron shell. Subsequently, heating is further performed to melt the metallic iron and slag. Molten metallic iron and molten slag are separated one from the other, thereby obtaining metallic iron with a relatively high metallization ratio. Through the employment of an apparatus for making metallic iron of the present invention, the above-described method is efficiently carried out, and metallic iron having a high iron purity can be made continuously as well as productively not only from iron oxide having a high iron content but also from iron oxide having a relatively low iron content.

摘要翻译： 制造金属铁的方法，其中使用含有铁矿石等铁氧化物的致密物和煤等碳质还原剂的材料，通过加热使氧化铁还原， 制作金属铁。 在这种还原过程中，在压实体的表面上产生并生长由金属铁组成的壳，并且炉渣中的炉渣聚集。 该还原继续，直到金属铁壳内基本上不存在氧化铁。 随后，进一步加热以熔化金属铁和炉渣。 熔融的金属铁和熔渣彼此分离，从而获得具有相对高的金属化比的金属铁。 通过使用本发明的金属铁制造装置，能够有效地进行上述的制造方法，能够连续生产铁纯度高的金属铁，并且不仅可以生产出具有高铁的铁氧化物 含量也来自铁含量较低的氧化铁。

公开(公告)号：US06432533B1

公开(公告)日：2002-08-13

申请号：US09478409

申请日：2000-01-06

申请人： Takuya Negami ,  Kazuo Kunii ,  Shinichi Inaba ,  Masataka Shimizu ,  Isao Kobayashi ,  Yoshimichi Takenaka ,  Toshihide Matsumura ,  Akira Uragami ,  Takashi Kujirai ,  Osamu Tsuchiya ,  Kimio Sugiyama ,  Shuzo Ito ,  Shoichi Kikuchi

发明人： Takuya Negami ,  Kazuo Kunii ,  Shinichi Inaba ,  Masataka Shimizu ,  Isao Kobayashi ,  Yoshimichi Takenaka ,  Toshihide Matsumura ,  Akira Uragami ,  Takashi Kujirai ,  Osamu Tsuchiya ,  Kimio Sugiyama ,  Shuzo Ito ,  Shoichi Kikuchi

IPC分类号： B32B516

CPC分类号： C21B13/0046 ,  C21B13/105 ,  Y02P10/136 ,  Y10T428/2991

摘要： A method of making metallic iron in which a compact, containing iron oxide such as iron ore or the like and a carbonaceous reductant such as coal or the like, is used as material, and the iron oxide is reduced through the application of heat, thereby making metallic iron. In the course of this reduction, a shell composed of metallic iron is generated and grown on the surface of the compact, and slag aggregates inside the shell. This reduction continues until substantially no iron oxide is present within the metallic iron shell. Subsequently, heating is further performed to melt the metallic iron and slag. Molten metallic iron and molten slag are separated one from the other, thereby obtaining metallic iron with a relatively high metallization ratio. Through the employment of an apparatus for making metallic iron of the present invention, the above-described method is efficiently carried out, and metallic iron having a high iron purity can be made continuously as well as productively not only from iron oxide having a high iron content but also from iron oxide having a relatively low iron content.

摘要翻译： 制造金属铁的方法，其中使用含有铁矿石等铁氧化物的致密物和煤等碳质还原剂的材料，通过加热使氧化铁还原， 制作金属铁。 在这种还原过程中，在压实体的表面上产生并生长由金属铁组成的壳，并且炉渣中的炉渣聚集。 该还原继续，直到金属铁壳内基本上不存在氧化铁。 随后，进一步加热以熔化金属铁和炉渣。 熔融的金属铁和熔渣彼此分离，从而获得具有相对高的金属化比的金属铁。 通过使用本发明的金属铁制造装置，能够有效地进行上述的制造方法，能够连续生产铁纯度高的金属铁，并且不仅可以生产出具有高铁的铁氧化物 含量也来自铁含量较低的氧化铁。

公开(公告)号：US06036744A

公开(公告)日：2000-03-14

申请号：US818954

申请日：1997-03-14

申请人： Takuya Negami ,  Kazuo Kunii ,  Shinichi Inaba ,  Masataka Shimizu ,  Isao Kobayashi ,  Yoshimichi Takenaka ,  Toshihide Matsumura ,  Akira Uragami ,  Takashi Kujirai ,  Osamu Tsuchiya ,  Kimio Sugiyama ,  Shuzo Ito ,  Shoichi Kikuchi

发明人： Takuya Negami ,  Kazuo Kunii ,  Shinichi Inaba ,  Masataka Shimizu ,  Isao Kobayashi ,  Yoshimichi Takenaka ,  Toshihide Matsumura ,  Akira Uragami ,  Takashi Kujirai ,  Osamu Tsuchiya ,  Kimio Sugiyama ,  Shuzo Ito ,  Shoichi Kikuchi

IPC分类号： C21B13/00 ,  C21B13/10 ,  C21B15/00 ,  C21B11/06 ,  C22B1/20

CPC分类号： C21B13/0046 ,  C21B13/105 ,  Y02P10/136 ,  Y10T428/2991

摘要： A method of making metallic iron in which a compact, containing iron oxide such as iron ore or the like and a carbonaceous reductant such as coal or the like, is used as material, and the iron oxide is reduced through the application of heat, thereby making metallic iron. In the course of this reduction, a shell composed of metallic iron is generated and grown on the surface of the compact, and slag aggregates inside the shell. This reduction continues until substantially no iron oxide is present within the metallic iron shell. Subsequently, heating is further performed to melt the metallic iron and slag. Molten metallic iron and molten slag are separated one from the other, thereby obtaining metallic iron with a relatively high metallization ratio. Through the employment of an apparatus for making metallic iron of the present invention, the above-described method is efficiently carried out, and metallic iron having a high iron purity can be made continuously as well as productively not only from iron oxide having a high iron content but also from iron oxide having a relatively low iron content.

公开(公告)号：US20090025511A1

公开(公告)日：2009-01-29

申请号：US11855793

申请日：2007-09-14

申请人： Takuya Negami ,  Kazuo Kunii ,  Shinichi Inaba ,  Masataka Shimizu ,  Isao Kobayashi ,  Yoshimichi Takenaka ,  Toshihide Matsumura ,  Akira Uragami ,  Takashi Kujirai ,  Osamu Tsuchiya ,  Kimio Sugiyama ,  Shuzo Ito ,  Shoichi Kikuchi

发明人： Takuya Negami ,  Kazuo Kunii ,  Shinichi Inaba ,  Masataka Shimizu ,  Isao Kobayashi ,  Yoshimichi Takenaka ,  Toshihide Matsumura ,  Akira Uragami ,  Takashi Kujirai ,  Osamu Tsuchiya ,  Kimio Sugiyama ,  Shuzo Ito ,  Shoichi Kikuchi

IPC分类号： C22B5/10

CPC分类号： C21B13/0046 ,  C21B13/105 ,  Y02P10/136 ,  Y10T428/2991

摘要： A method of making metallic iron in which a compact, containing iron oxide such as iron ore or the like and a carbonaceous reductant such as coal or the like, is used as material, and the iron oxide is reduced through the application of heat, thereby making metallic iron. In the course of this reduction, a shell composed of metallic iron is generated and grown on the surface of the compact, and slag aggregates inside the shell. This reduction continues until substantially no iron oxide is present within the metallic iron shell. Subsequently, heating is further performed to melt the metallic iron and slag. Molten metallic iron and molten slag are separated one from the other, thereby obtaining metallic iron with a relatively high metallization ratio. Through the employment of an apparatus for making metallic iron of the present invention, the above-described method is efficiently carried out, and metallic iron having a high iron purity can be made continuously as well as productively not only from iron oxide having a high iron content but also from iron oxide having a relatively low iron content.

摘要翻译： 制造金属铁的方法，其中使用含有铁矿石等铁氧化物的致密物和煤等碳质还原剂的材料，通过加热使氧化铁还原， 制作金属铁。 在这种还原过程中，在压实体的表面上产生并生长由金属铁组成的壳，并且炉渣中的炉渣聚集。 该还原继续，直到金属铁壳内基本上不存在氧化铁。 随后，进一步加热以熔化金属铁和炉渣。 熔融的金属铁和熔渣彼此分离，从而获得具有相对高的金属化比的金属铁。 通过使用本发明的金属铁制造装置，能够有效地进行上述的制造方法，能够连续生产铁纯度高的金属铁，并且不仅可以生产出具有高铁的铁氧化物 含量也来自铁含量较低的氧化铁。

公开(公告)号：US06506231B2

公开(公告)日：2003-01-14

申请号：US09891653

申请日：2001-06-26

申请人： Takuya Negami ,  Kazuo Kunii ,  Shinichi Inaba ,  Masataka Shimizu ,  Isao Kobayashi ,  Yoshimichi Takenaka ,  Toshihide Matsumura ,  Akira Uragami ,  Takashi Kujirai ,  Osamu Tsuchiya ,  Kimio Sugiyama ,  Shuzo Ito ,  Shoichi Kikuchi

发明人： Takuya Negami ,  Kazuo Kunii ,  Shinichi Inaba ,  Masataka Shimizu ,  Isao Kobayashi ,  Yoshimichi Takenaka ,  Toshihide Matsumura ,  Akira Uragami ,  Takashi Kujirai ,  Osamu Tsuchiya ,  Kimio Sugiyama ,  Shuzo Ito ,  Shoichi Kikuchi

IPC分类号： C21B1314

CPC分类号： C21B13/0046 ,  C21B13/105

摘要： A method of making metallic iron in which a compact, containing iron oxide such as iron ore or the like and a carbonaceous reductant such as coal or the like, is used as material, and the iron oxide is reduced through the application of heat, thereby making metallic iron. In the course of this reduction, a shell composed of metallic iron is generated and grown on the surface of the compact, and slag aggregates inside the shell. This reduction continues until substantially no iron oxide is present within the metallic iron shell. Subsequently, heating is further performed to melt the metallic iron and slag. Molten metallic iron and molten slag are separated one from the other, thereby obtaining metallic iron with a relatively high metallization ratio. Through the employment of an apparatus for making metallic iron of the present invention, the above-described method is efficiently carried out, and metallic iron having a high iron purity can be made continuously as well as productively not only from iron oxide having a high iron content but also from iron oxide having a relatively low iron content.

摘要翻译： 制造金属铁的方法，其中使用含有铁矿石等铁氧化物的致密物和煤等碳质还原剂的材料，通过加热使氧化铁还原， 制作金属铁。 在这种还原过程中，在压实体的表面上产生并生长由金属铁组成的壳，并且炉渣中的炉渣聚集。 该还原继续，直到金属铁壳内基本上不存在氧化铁。 随后，进一步加热以熔化金属铁和炉渣。 熔融的金属铁和熔渣彼此分离，从而获得具有相对高的金属化比的金属铁。 通过使用本发明的金属铁制造装置，能够有效地进行上述的制造方法，能够连续生产铁纯度高的金属铁，并且不仅可以生产出具有高铁的铁氧化物 含量也来自铁含量较低的氧化铁。

公开(公告)号：US20120006449A1

公开(公告)日：2012-01-12

申请号：US13258250

申请日：2010-04-06

申请人： Mitsutaka Hino ,  Isao Kobayashi ,  Akira Uragami ,  Takuya Negami

发明人： Mitsutaka Hino ,  Isao Kobayashi ,  Akira Uragami ,  Takuya Negami

IPC分类号： H01F1/047

CPC分类号： C21B13/105 ,  C21B13/0006 ,  C21B13/0046 ,  C21B13/0066 ,  C21B13/0073 ,  Y02P10/136

摘要： The present invention provides a method for producing metallic iron, which is operable at low temperature. The present invention relates to a method for producing a metallic iron, which comprises heating and reducing a raw material mixture containing a carbonaceous reducing agent and an iron oxide-containing material to produce the metallic iron, wherein the carbonaceous reducing agent has a volatile content of 20 to 60 mass %, a gas derived from the carbonaceous reducing agent is a CO—CO2—H2 gas, and the method comprises forming solid Fe3C by heating the raw material mixture in an atmosphere containing the CO—CO2—H2 gas, melting the Fe3C, and carburizing a reduced iron through the molten Fe3C.

摘要翻译： 本发明提供一种在低温下可操作的金属铁的制造方法。 金属铁的制造方法技术领域本发明涉及一种金属铁的制造方法，其特征在于，将含有碳质还原剂的原料混合物和含铁氧化物的原料混合，制成金属铁，其中，所述碳质还原剂的挥发成分为 20〜60质量％，来自碳质还原剂的气体为CO-CO 2·H 2气体，该方法包括通过在含有CO-CO 2 -H 2气体的气氛中加热原料混合物来形成固体Fe 3 C， Fe3C，并通过熔融的Fe3C渗碳还原铁。

公开(公告)号：US6063156A

公开(公告)日：2000-05-16

申请号：US992791

申请日：1997-12-18

申请人： Takuya Negami ,  Akira Uragami

发明人： Takuya Negami ,  Akira Uragami

IPC分类号： C21B11/10 ,  C21B13/00 ,  C21B13/12 ,  C21B15/00

CPC分类号： C21B13/0006 ,  Y02P10/216 ,  Y02P10/265 ,  Y02P10/283

摘要： A method for producing a molten iron from a compact containing a carbonaceous reductant and an iron oxide is carried out extremely efficiently with a simple operation. The compact is supplied to a molten iron bath or a molten slag on the molten iron bath so as to float on the molten iron bath and/or the molten slag such that a part or most of the compact surface is substantially exposed to a high temperature gas atmosphere in the furnace for taking in a reduced iron generated by the reduction of the iron oxide in the compact.

摘要翻译： 通过简单的操作，非常有效地进行从包含碳质还原剂和氧化铁的压块制造铁水的方法。 将该压块供应到铁水浴或熔融铁浴上的熔渣，以便浮在铁水池和/或熔融炉渣上，使得一部分或大部分致密表面基本上暴露于高温 炉中的气体气氛用于吸收由压实体中的氧化铁还原产生的还原铁。