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公开(公告)号：US4268303A
公开(公告)日：1981-05-19
申请号：US25100
申请日：1979-03-29
申请人： Dentaro Kaneko , Mamoru Onoda , Yoshio Kimura , Yutaka Inada , Masahiro Tomita
发明人： Dentaro Kaneko , Mamoru Onoda , Yoshio Kimura , Yutaka Inada , Masahiro Tomita
CPC分类号： C21B13/146 , C21B13/02 , C21B2100/02 , C21B2100/04 , Y02P10/122 , Y02P10/136 , Y02P10/143
摘要： The present invention discloses a direct reduction process for producing reduced iron by reducing iron ores and/or pellets with reducing gases, wherein the iron ores and/or pellets are reduced to a degree of reduction of 30-80% by a reducing gas containing 15-40% by volume of methane at a temperature of more than 950.degree. C. and further reduced by a reducing gas containing high proportion of carbon monoxide and/or hydrogen at a temperature of below 1000.degree. C.
摘要翻译： 本发明公开了一种通过用还原气还原铁矿石和/或丸粒来生产还原铁的直接还原方法，其中铁矿石和/或丸粒通过含15的还原气体还原至30-80％的程度 -40％的甲烷在大于950℃的温度下进一步还原，在低于1000℃的温度下还含有高比例的一氧化碳和/或氢的还原气体。
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公开(公告)号：US4380328A
公开(公告)日：1983-04-19
申请号：US116458
申请日：1980-01-29
CPC分类号： F27B1/02 , C21B13/02 , Y02P10/136
摘要： A shaft furnace for reducing ores with a gas, wherein the furnace is constructed to destroy the plug-flow state of ores in or above a plug-flow zone where a reduction ratio of the ores is 50 to 70%, in order to prevent the clustering by changing the plug-flow zone into a shear-flow zone. Further, the shaft furnace for reducing ores with a gas is so constructed that a hydraulic radius R (cm) of the furnace in the reduction zone in which the reduction ratio is greater than 50% is selected to be,R.ltoreq.120 exp(8.6-0.009T)wherein T denotes the temperature (.degree.C.) of the reducing gas, in order to prevent the clustering.
摘要翻译： 一种用于用气体还原矿石的竖炉，其中该炉被构造成破坏矿石的减少比率为50％至70％的活塞流区域内或上方的矿石的塞流状态，以防止 通过将插塞流区域改变成剪切流动区域进行聚类。 此外，用于用气体还原矿石的竖炉被构造成使得在减速比大于50％的还原区域中的炉的液压半径R（cm）被选择为：R 110 = （8.6-0.009T）其中T表示还原气体的温度（℃），以防止聚集。
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公开(公告)号：US4348226A
公开(公告)日：1982-09-07
申请号：US186131
申请日：1980-09-11
申请人： Mamoru Aoki , Masahiro Tomita , Kei Utsunomiya , Hironobu Sako , Dentaro Kaneko , Katsunori Shimazaki , Yoshitomo Ishii
发明人： Mamoru Aoki , Masahiro Tomita , Kei Utsunomiya , Hironobu Sako , Dentaro Kaneko , Katsunori Shimazaki , Yoshitomo Ishii
CPC分类号： C21B13/0073 , Y02P10/136 , Y02P10/143 , Y02P10/265 , Y02P10/283
摘要： A process for the direct reduction of iron oxide by blowing into a reduction furnace a reducing gas which is prepared by reforming a mixture of a reduction furnace exhaust gas and a gas mainly composed of methane, which comprises the steps of dividing the gas mainly composed of methane into two branch streams, mixing the first branch stream gas with a part of the reduction furnace exhaust gas and supplying the resulting mixture to the externally heated reformer furnace, to produce a high-temperature reformed gas; mixing the second branch stream gas with said high-temperature reformed gas and during the course to the reduction furnace, subjecting the mixture to endothermic reforming reactions in an after-reactor without external heating, utilizing the sensible heat of the high-temperature mixed gas, controlling the self-reforming reactions so as to lower the temperature and simultaneously adjust the composition of the high-temperature mixed gas, and blowing the reducing gas obtained into the reduction furnace. Effective use of the sensible heat can be achieved.
摘要翻译： 通过将还原炉废气和主要由甲烷构成的气体的混合物进行重整制备的还原气体，通过向还原炉吹入还原气体来直接还原氧化铁的方法，该方法包括以下步骤：将主要由 将甲烷分成两个分支流，将第一分支气体气体与还原炉废气的一部分混合，并将所得混合物供给到外部加热的重整炉中，以产生高温重整气体; 将第二分支气体气体与所述高温重整气体混合，并且在还原炉的过程中，利用高温混合气体的显热，在未经外部加热的混合物中进行吸热重整反应， 控制自重整反应以降低温度并同时调节高温混合气体的组成，并且将获得的还原气体吹入还原炉。 可以有效地利用显热。
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4.发明授权
公开(公告)号：US4420332A
公开(公告)日：1983-12-13
申请号：US329033
申请日：1981-12-09
申请人： Kenji Mori , Kiichi Narita , Ryuzo Ijiri , Tsuneo Morimitsu , Dentaro Kaneko , Nobuo Uemura , Yoshifumi Kameoka , Mamoru Taniuchi
发明人： Kenji Mori , Kiichi Narita , Ryuzo Ijiri , Tsuneo Morimitsu , Dentaro Kaneko , Nobuo Uemura , Yoshifumi Kameoka , Mamoru Taniuchi
CPC分类号： C01B3/44 , C10G57/00 , C10G9/32 , C21B13/0033 , Y02P10/136 , Y02P10/216
摘要： The invention provides a novel process for concurrently carrying out production of reduced iron and thermal cracking of heavy oils in which the reaction of thermal cracking is performed in a fluidized state with the fine iron ore as the fluidized medium and the particles of the iron ore become coated with deposits of the carbonaceous by-product material. The fine iron ore with the carbon deposited thereon is introduced in a fluidized-bed reducing furnace and there reduced into reduced iron by contacting with a reducing gas which is produced in a gas reformer from the cracked gas or the residual oil separated from the products of the thermal cracking. In an improvement of the above process, the gas reformer is operated as a fluidized-bed reactor with the reduced iron as the fluidized medium and acting as the reforming catalyst. The reduced iron partially re-oxidized in the reforming reaction is again reduced to completely reduced iron either by recycling into the fluidized-bed reducing furnace or by introducing into a second fluidized-bed reducing furnace.
摘要翻译： 本发明提供了一种同时进行还原铁生产和重油热裂解的新方法，其中热裂解反应以流化状态进行，细铁矿石为流化介质，铁矿石颗粒成为 涂覆有碳质副产品材料的沉积物。 其中沉积有碳的细铁矿石被引入流化床还原炉中，并且通过与气体重整器中产生的还原气体相接触而将其还原成还原铁，所述还原气体是从裂化气体或从产物 热裂纹。 在上述方法的改进中，气体重整器作为流化床反应器操作，还原铁作为流化介质并用作重整催化剂。 通过再循环到流化床还原炉中或通过引入第二流化床还原炉，在重整反应中部分再氧化的还原铁再次被还原成完全还原的铁。
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公开(公告)号：US4701214A
公开(公告)日：1987-10-20
申请号：US857684
申请日：1986-04-30
申请人： Dentaro Kaneko , David C. Meissner
发明人： Dentaro Kaneko , David C. Meissner
CPC分类号： C21B13/105 , C21B13/14 , Y02P10/136
摘要： A method of producing iron from finely divided iron oxide comprising the steps of: mixing iron oxide or iron ore fines with finely divided coal and a binder to form a mixture, agglomerating the mixture by compacting, pelletizing, or briquetting the mixture to form agglomerates or pellets, introducing the pellets to a rotary hearth furnace to prereduce the iron in the pellets, introducing the prereduced pellets into a smelting reduction vessel as the metallic charge constituent, introducing particulate carbonaceous fuel and oxygen to the smelting reduction vessel through the bottom of the vessel to react with the melt or bath within the vessel, reduce the iron to elemental iron and form an off gas containing CO and H.sub.2 introducing the off-gas into the rotary hearth furnace as process gas to prereduce the pellets therein, and drawing off the hot metal from the smelting reduction vessel.The prereduced compacts are preferably discharged from the rotary hearth furnace at a temperature of at least 1000.degree. C. into the smelting reduction vessel to form the molten iron product.
摘要翻译： 一种从细碎铁氧化物生产铁的方法，包括以下步骤：将氧化铁或铁矿石细粉与精细分散的煤和粘合剂混合以形成混合物，通过压实，造粒或压块混合物形成附聚物 将颗粒引入到转底炉中以预还原颗粒中的铁，将预还原的颗粒引入作为金属电荷成分的熔融还原容器中，将颗粒状碳质燃料和氧气通过容器的底部引入冶炼还原容器 与容器内的熔体或浴液反应，将铁还原成铁，并形成含有CO和H2 + L的废气，将废气引入转炉底炉中作为预还原颗粒的工艺气体，并进行拉伸 从冶炼还原容器中取出热金属。 优选将预先形成的成形体从回转炉底炉中至少在1000℃的温度下排出到熔融还原容器中，形成铁水制品。
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6.发明授权
公开(公告)号：US3980465A
公开(公告)日：1976-09-14
申请号：US511371
申请日：1974-10-02
申请人： Reijiro Nishida , Kunio Takeda , Dentaro Kaneko , Kunio Uchida
发明人： Reijiro Nishida , Kunio Takeda , Dentaro Kaneko , Kunio Uchida
CPC分类号： C22B1/2413
摘要： Iron-ore oxidized pellets are produced from magnetite concentrate by the addition to the magnetite concentrate of at least one calcium compound selected from the group consisting of slaked lime, quicklime and limestone, to a basicity of 1 to 5, granulating the mixture thus prepared, drying the same, preheating the same at a temperature of from 1000.degree. to 1150.degree.C for 3 to 10 minutes, and thereafter firing the same.
摘要翻译： 铁矿石氧化的颗粒是由磁铁矿精矿通过添加到选自熟石灰，生石灰和石灰石中的至少一种钙化合物的磁铁矿浓缩物制成，碱度为1至5，将如此制备的混合物造粒， 将其干燥，在1000〜1150℃的温度下预热3〜10分钟，然后进行烧成。
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