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公开(公告)号：US06258149B1
公开(公告)日：2001-07-10
申请号：US09274351
申请日：1999-03-23
申请人： Takeshi Sugiyama , Hidetoshi Tanaka , Takao Harada , Sumito Hashimoto , Yoshimichi Takenaka , Shoji Shirouchi
发明人： Takeshi Sugiyama , Hidetoshi Tanaka , Takao Harada , Sumito Hashimoto , Yoshimichi Takenaka , Shoji Shirouchi
IPC分类号： C21B1308
CPC分类号： C21B13/10 , C21B13/105 , Y02P10/136 , Y02P10/143
摘要： A method of producing reduced iron agglomerates capable of preventing oxidation in the surface layer of the agglomerates and obtaining reduced iron agglomerates having a high degree of metallization, by blowing a methane or methane-containing gas to the reduced iron oxide agglomerates incorporated with carbonaceous material at a surface temperature of 1150° C. or higher during movement in a moving hearth heating type furnace at the end of reduction as the final stage of the stagnation period of the agglomerates in the heating furnace.
摘要翻译： 通过向含碳材料的还原氧化铁附聚物吹入含甲烷或含甲烷的气体，可以生产还原铁附聚物的方法，所述还原铁附聚物能够防止附聚物的表层中的氧化并获得具有高度金属化的还原铁附聚物 在作为加热炉中的附聚物的停滞期的最后阶段的还原结束时在移动炉床加热型炉中移动期间的表面温度为1150℃以上。
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公开(公告)号：US6129777A
公开(公告)日：2000-10-10
申请号：US275017
申请日：1999-03-24
申请人： Kojiro Fuji , Hidetoshi Tanaka , Takao Harada , Takeshi Sugiyama , Yoshimichi Takenaka , Kazuya Miyagawa , Shoji Shirouchi , Haruhisa Iwakiri , Makoto Nishimura , Takao Umeki , Sumito Hashimoto , Teruhisa Uehara
发明人： Kojiro Fuji , Hidetoshi Tanaka , Takao Harada , Takeshi Sugiyama , Yoshimichi Takenaka , Kazuya Miyagawa , Shoji Shirouchi , Haruhisa Iwakiri , Makoto Nishimura , Takao Umeki , Sumito Hashimoto , Teruhisa Uehara
CPC分类号： C21B13/10 , C21B13/105 , Y02P10/136
摘要： Iron oxide agglomerates incorporated with the carbonaceous material having a particle size within a range of about 10 to 30 nm are prepared upon production of reduced iron agglomerates. Then, the iron oxides agglomerates incorporated with the carbonaceous material were laid thinly at a laying density of less than 1.4 kg/m.sup.2 /mm or lower on a hearth of a moving hearth furnace. Subsequently, the iron oxide agglomerates are heated rapidly such that the surface temperature of the iron oxide agglomerates reaches 1200.degree. C. or higher within one-third of the retention period of time of the iron oxide agglomerates in the moving hearth furnace. Then, the iron oxide agglomerates are reduced till the metallization ratio thereof reaches 85% or higher to form reduced iron agglomerates and then the reduced iron agglomerates are discharged out of the moving hearth furnace. With the procedures, reduced iron agglomerates of a high average quality can be obtained at a high productivity.
摘要翻译： 在生产还原铁附聚物时制备与含有约10至30nm范围内的粒度的含碳材料结合的氧化铁附聚物。 然后，在移动的炉底炉的炉床上以与小于1.4kg / m 2 / mm 2或更低的铺设密度薄层地铺设掺入碳质材料的氧化铁附聚物。 随后，快速加热氧化铁附聚物，使铁氧化物附聚物的表面温度在移动的炉床炉中的氧化铁附聚物的保留时间的三分之一内达到1200℃或更高。 然后，将氧化铁附聚物还原直到其金属化率达到85％以上，形成还原铁团聚体，然后将还原铁团聚体从移动的炉床炉排出。 通过该方法，可以以高生产率获得高平均质量的还原铁团块。
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3.发明授权Pellets incorporated with carbonaceous material and method of producing reduced iron 有权含有碳质材料的颗粒和还原铁的生产方法公开(公告)号：US06334883B1
公开(公告)日：2002-01-01
申请号：US09444824
申请日：1999-11-22
IPC分类号： C22B114
CPC分类号： C22B1/245 , C21B13/0046 , C21B13/0066 , C21B13/105
摘要： Pellets incorporated with a carbonaceous material of the present invention contain a carbonaceous material and iron ore mainly composed of iron oxide. The maximum fluidity of the carbonaceous material in softening and melting, and the ratio of iron oxide particles of 10 &mgr;m or smaller in the iron ore are within the range above a line which connects in turn points A, B and C shown in FIG. 1, including the line. This permits the production of pellets incorporated with a carbonaceous material having excellent thermal conductivity and high strength. Reduction of the pellets incorporated with a carbonaceous material produces reduced iron having high strength after reduction and a low fines ratio with improved productivity.
摘要翻译： 与本发明的碳质材料结合的颗粒含有主要由氧化铁组成的碳质材料和铁矿石。 软化熔融中的碳质材料的最大流动性，铁矿石中的氧化铁粒子的比例为10um以下，在连接图1所示的A，B，C的连线的范围内。 1，包括线。 这允许生产具有优异导热性和高强度的含碳材料的颗粒。 还原包含碳质材料的颗粒在还原后产生具有高强度的还原铁和具有提高的生产率的低细粉比。
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公开(公告)号：US06605130B2
公开(公告)日：2003-08-12
申请号：US09987523
申请日：2001-11-15
IPC分类号： C22B114
CPC分类号： C22B1/245 , C21B13/0046 , C21B13/0066 , C21B13/105
摘要： Pellets incorporated with a carbonaceous material of the present invention contain a carbonaceous material and iron ore mainly composed of iron oxide. The maximum fluidity of the carbonaceous material in softening and melting, and the ratio of iron oxide particles of 10 &mgr;m or smaller in the iron ore are within the range above a line which connects in turn points A, B and C shown in FIG. 1, including the line. This permits the production of pellets incorporated with a carbonaceous material having excellent thermal conductivity and high strength. Reduction of the pellets incorporated with a carbonaceous material produces reduced iron having high strength after reduction and a low fines ratio with improved productivity.
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公开(公告)号：US06302938B1
公开(公告)日：2001-10-16
申请号：US09612981
申请日：2000-07-10
申请人： Tsunao Kamijo , Kazuya Miyagawa , Yoshimichi Takenaka , Masakata Shimizu , Shoji Shirouchi , Haruhisa Iwakiri
发明人： Tsunao Kamijo , Kazuya Miyagawa , Yoshimichi Takenaka , Masakata Shimizu , Shoji Shirouchi , Haruhisa Iwakiri
IPC分类号： C21B1308
CPC分类号： C21B13/105 , C21B13/10 , C22B1/2406 , C22B7/02 , C22B19/30 , Y02P10/136 , Y02P10/216 , Y10S75/961
摘要： A carbonaceous material is controlled such that the amount of carbon is from 7 to 60 mass % based on the total amount of iron and Zn in a starting mixture comprising one or more of ducts containing iron oxide and Zn oxide and a binder in an amount to bond the dusts, and water is added to prepare green pellets incorporated with the carbonaceous material. Then, dry pellets prepared by drying the thus prepared green pellets into a reduction furnace, the dry pellets are heated by heat transfer, mainly, radiation such that a temperature elevation rate is from 3 to 13° C./sec within a temperature range from 150 to 900° C. of the pellets, thereby reducing Zn oxide and evaporating Zn, as well as reducing iron oxide to produce reduced iron pellets.
摘要翻译： 控制含碳材料，使得碳的含量相对于包含一种或多种含铁氧化物和Zn氧化物的管道的起始混合物中的铁和Zn的总量为7〜60质量％，粘合剂的量为 粘合灰尘，并加入水以制备与碳质材料结合的生球团。 然后，通过将如此制备的生球团粒干燥成还原炉而制备的干燥颗粒，通过热传递加热干燥颗粒，主要是辐射，使得升温速率在3至13℃/秒的温度范围内 150〜900℃，由此减少Zn氧化物并蒸发Zn，还原还原铁氧化物以制备还原铁丸。
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公开(公告)号：US6152983A
公开(公告)日：2000-11-28
申请号：US213249
申请日：1998-12-17
申请人： Tsunao Kamijo , Kazuya Miyagawa , Yoshimichi Takenaka , Masakata Shimizu , Shoji Shirouchi , Haruhisa Iwakiri
发明人： Tsunao Kamijo , Kazuya Miyagawa , Yoshimichi Takenaka , Masakata Shimizu , Shoji Shirouchi , Haruhisa Iwakiri
CPC分类号： C21B13/105 , C21B13/10 , C22B1/2406 , C22B19/30 , C22B7/02 , Y02P10/136 , Y02P10/216 , Y10S75/961
摘要： A carbonaceous material is controlled such that the amount of carbon is from 7 to 60 mass % based on the total amount of iron and Zn in a starting mixture comprising one or more of ducts containing iron oxide and Zn oxide and a binder in an amount to bond the dusts, and water is added to prepare green pellets incorporated with the carbonaceous material. Then, dry pellets prepared by drying the thus prepared green pellets into a reduction furnace, the dry pellets are heated by heat transfer, mainly, radiation such that a temperature elevation rate is from 3 to 13.degree. C./sec within a temperature range from 150 to 900.degree. C. of the pellets, thereby reducing Zn oxide and evaporating Zn, as well as reducing iron oxide to produce reduced iron pellets.
摘要翻译： 控制含碳材料，使得碳的含量相对于包含一种或多种含铁氧化物和Zn氧化物的管道的起始混合物中的铁和Zn的总量为7〜60质量％，粘合剂的量为 粘合灰尘，并加入水以制备与碳质材料结合的生球团。 然后，通过将如此制备的生球团粒干燥成还原炉制备的干燥粒料，通过热传递加热干燥粒料，主要是辐射，使得升温速率在3-13℃/秒的温度范围内 150〜900℃，从而减少Zn氧化物并蒸发Zn，还原还原铁氧化物，生产还原铁丸。
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7.发明授权
公开(公告)号：US4257806A
公开(公告)日：1981-03-24
申请号：US959241
申请日：1978-11-09
CPC分类号： C22B1/2406 , C22B1/245 , Y10T428/12479
摘要： Fired iron-ore pellets are disclosed which are prepared by crushing iron ore to be pelletized, mixing a carbonaceous material of grain sizes ranging from 0.1 to 3 mm in diameter to the crushed iron ore in an amount of up to 4% by weight, pelletizing the mixture thus prepared, and firing the resulting pellets; thereby providing pellets throughout each of which is dispersed macro-pores of sizes ranging from 0.1 to 3 mm in diameter at a ratio of up to 25% relative to all pores contained in each pellet.
摘要翻译： 公开了通过粉碎要造粒的铁矿石制备的焙烧铁矿石颗粒，将直径为0.1至3mm的粒状碳素材料与至多4重量％的粉碎铁矿石混合，造粒 如此制备的混合物，并烧制所得颗粒; 从而提供颗粒，其中每个颗粒是相对于每个颗粒中包含的所有孔的直径为0.1至3mm的分散大孔，其比例高达25％。
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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：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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