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公开(公告)号：US06210462B1
公开(公告)日：2001-04-03
申请号：US09176311
申请日：1998-10-22
申请人： Shoichi Kikuchi , Akira Uragami , Isao Kobayashi , Yasuhiro Tanigaki , Eiichi Ito , Koji Tokuda , Osamu Tsuchiya , Shuzo Ito
发明人： Shoichi Kikuchi , Akira Uragami , Isao Kobayashi , Yasuhiro Tanigaki , Eiichi Ito , Koji Tokuda , Osamu Tsuchiya , Shuzo Ito
IPC分类号： C21B1108
CPC分类号： C21B13/105 , C21B13/10 , Y02P10/216
摘要： A method of making metallic iron includes heating a mixed powder containing iron oxide and a carbonaceous reducing agent on a hearth to reduce the iron oxide and melt the reduced iron. Preliminary molding of the mixed powder starting material into pellets is not required. The resulting metallic iron contains extremely low concentrations of slag ingredients, even when the mixed powder starting material contains only low concentrations of iron oxide.
摘要翻译： 制造金属铁的方法包括在炉膛上加热含有氧化铁和碳质还原剂的混合粉末以减少氧化铁并熔化还原铁。 不需要将混合粉末起始材料初步模制成颗粒。 所得到的金属铁含有极低浓度的炉渣成分，即使混合粉末原料仅含有低浓度的氧化铁。
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公开(公告)号：US06592649B2
公开(公告)日：2003-07-15
申请号：US09892546
申请日：2001-06-28
申请人： Shoichi Kikuchi , Yasuhiro Tanigaki , Koji Tokuda , Osamu Tsuchiya , Shuzo Ito
发明人： Shoichi Kikuchi , Yasuhiro Tanigaki , Koji Tokuda , Osamu Tsuchiya , Shuzo Ito
IPC分类号： C21B1100
CPC分类号： C21B13/10 , C21B13/105 , Y02P10/136 , Y02P10/216
摘要： The present invention provides a method of producing metallic iron nuggets with a high yield and good productivity, and more particularly a method which can produce metallic iron nuggets which have a high Fe purity and are excellent in transporting and handling due to a large grain diameter with a high yield and good productivity, when they are produced by reducing and melting raw material containing iron oxide such as iron ore and carbonaceous reducing agent such as coke. The method of producing metallic iron nuggets comprises steps of: heating raw material containing carbonaceous reducing agent and iron oxide-containing material in a reducing/melting furnace, reducing iron oxide in the raw material, and then heating and melting the metallic iron produced by the reduction and simultaneously making it coalesce while separating the metallic iron nuggets from slag components characterized in that the fixed carbon content ratio as the carbonaceous reducing agent is at least 73% and the volatile matter content in the raw material is not more than 3.9% are used, and the mixing content of carbonaceous reducing agent is restrained to be not more than 45% in relation to the iron oxide components, which is contained in the iron oxide-containing material of the raw material.
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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。
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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
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.
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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
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。
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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。
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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。
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公开(公告)号：US07438730B2
公开(公告)日：2008-10-21
申请号：US11378269
申请日：2006-03-20
申请人： Yasuhiko Igawa , Jun Jimbo , Hidetoshi Tanaka , Shoichi Kikuchi , Takao Harada , Osamu Tsuchiya , Shuzo Ito , Isao Kobayashi
发明人： Yasuhiko Igawa , Jun Jimbo , Hidetoshi Tanaka , Shoichi Kikuchi , Takao Harada , Osamu Tsuchiya , Shuzo Ito , Isao Kobayashi
IPC分类号： C01B31/14
CPC分类号： C05D9/02 , C05G3/0047 , C21B13/0046 , C21B13/105 , C22B1/2406 , C22B1/243 , C22B1/244 , C22B1/245 , C22B13/10 , Y02P10/212
摘要： A method for producing an iron oxide pellet including the steps of adding water to a raw material mixture comprising iron oxide which serves as a primary component, a carbonaceous material in an amount sufficient for reducing the iron oxide, an organic binder in an amount sufficient for binding the iron oxide and the carbonaceous material, and an inorganic coagulant in an amount of not less than 0.05 mass % and less than 1 mass %; pelletizing the resultant mixture to thereby obtain a green pellet; and drying the green pellet until the moisture content is reduced to equal to or less than 1.0 mass %. The thus-produced iron oxide pellet is charged in a reducing furnace for reduction to thereby obtain a reduced iron pellet.
摘要翻译： 一种氧化铁颗粒的制造方法，其特征在于，包括以下步骤：将水作为主要组分的含有氧化铁的原料混合物，足以还原氧化铁的碳质材料， 结合铁氧化物和碳质材料，无机凝结剂的量不小于0.05质量％且小于1质量％; 将所得混合物造粒，得到生球团块; 并干燥绿色颗粒，直到含水量降低至1.0质量％以下。 将由此生产的氧化铁颗粒装入还原炉中进行还原，从而获得还原铁颗粒。
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公开(公告)号：US20060218753A1
公开(公告)日：2006-10-05
申请号：US11378269
申请日：2006-03-20
申请人： Yasuhiko Igawa , Jun Jimbo , Hidetoshi Tanaka , Shoichi Kikuchi , Takao Harada , Osamu Tsuchiya , Shuzo Ito , Isao Kobayashi
发明人： Yasuhiko Igawa , Jun Jimbo , Hidetoshi Tanaka , Shoichi Kikuchi , Takao Harada , Osamu Tsuchiya , Shuzo Ito , Isao Kobayashi
CPC分类号： C05D9/02 , C05G3/0047 , C21B13/0046 , C21B13/105 , C22B1/2406 , C22B1/243 , C22B1/244 , C22B1/245 , C22B13/10 , Y02P10/212
摘要： A method for producing an iron oxide pellet including the steps of adding water to a raw material mixture comprising iron oxide which serves as a primary component, a carbonaceous material in an amount sufficient for reducing the iron oxide, an organic binder in an amount sufficient for binding the iron oxide and the carbonaceous material, and an inorganic coagulant in an amount of not less than 0.05 mass % and less than 1 mass %; pelletizing the resultant mixture to thereby obtain a green pellet; and drying the green pellet until the moisture content is reduced to equal to or less than 1.0 mass %. The thus-produced iron oxide pellet is charged in a reducing furnace for reduction to thereby obtain a reduced iron pellet.
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公开(公告)号：US06602320B2
公开(公告)日：2003-08-05
申请号：US09828950
申请日：2001-04-10
IPC分类号： C21B1308
CPC分类号： C21B13/10 , C21B13/105 , Y02P10/136
摘要： A method for producing reduced iron comprises agglomerating a raw material mixture containing a carbonaceous reducing agent and an iron oxide-containing material into small agglomerates, heating the agglomerate within a heat reduction furnace, thereby solid reducing the iron oxide in the agglomerate to produce solid reduced iron, or further heating the solid reduced iron, melting the metallic iron produced by the reduction, and coagulating the molten metallic iron while separating the slag component contained in the small agglomerates to provide granular metallic iron, which is characterized by using a agglomerate having a particle size of 10 mm or less or 3-7 mm, preferably less than 6 mm, more preferably 3 mm or more and less than 6 mm as the small agglomerates.
摘要翻译： 一种还原铁的制造方法包括将含有碳质还原剂和含铁氧化物的原料混合物凝集成小团聚物，在热还原炉内加热附聚物，由此固体还原附聚物中的氧化铁以产生固体还原 铁，或进一步加热固体还原铁，熔化通过还原产生的金属铁，并使熔融的金属铁凝结，同时分离包含在小团块中的炉渣成分，以提供粒状金属铁，其特征在于使用具有 粒径为10mm以下或3-7mm，优选小于6mm，更优选为3mm以上且小于6mm。
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