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公开(公告)号：US06575390B2
公开(公告)日：2003-06-10
申请号：US09828818
申请日：2001-04-10
IPC分类号： B02O2318
CPC分类号： C21B13/0046 , C21B13/00
摘要： A pretreatment apparatus for raw materials for production of reduced iron pretreats the raw materials, comprising an iron material, such as iron ore, and other raw materials, such as coal and flux, by a dryer, classifiers, a roll press, and a vertical mill, and feeds the pretreated raw materials to a pelletizer via a feed bin. At least two fluidized mixers for mixing the classified raw materials, one of the fluidized mixers for storage and the other fluidized mixer for supply, are provided for batch treatment. The pretreatment apparatus can uniformize the crushed particle sizes of iron ore, coal, etc. different in hardness, stably supply homogeneously mixed raw materials, and simplify pelletization-side facilities.
摘要翻译： 用于生产还原铁的原料的预处理装置通过干燥器，分选机，辊压机和垂直方式预处理原料，包括铁材料，例如铁矿石和其它原料，例如煤和助熔剂 并将预处理的原料通过进料仓送入造粒机。 用于混合分级原料的至少两个流化混合器，用于储存的流化混合器之一和用于供应的另一个流化混合器被提供用于批处理。 预处理装置可以使硬度不同的铁矿石，煤等的粉碎粒径均匀化，稳定地供给均质混合原料，简化造粒侧设备。
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公开(公告)号：US06592806B2
公开(公告)日：2003-07-15
申请号：US09828805
申请日：2001-04-10
IPC分类号： C21B1308
CPC分类号： F27B9/39 , F27B9/16 , F27D3/08 , F27D2003/0038 , F27D2003/0063 , F27D2003/0066
摘要： A reduced iron discharger in a rotary hearth reducing furnace scoops up reduced iron on a rotary hearth from a front side with the use of an impeller enough long to cover the entire width of the rotary hearth, drops the reduced iron onto a vibrating conveyor mounted in the impeller, and discharges it from an outlet to the outside of the reducing furnace. The reduced iron discharger involves minimal structural waste, and gives a satisfactory yield.
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公开(公告)号：US06482351B2
公开(公告)日：2002-11-19
申请号：US09828802
申请日：2001-04-10
IPC分类号： C12B1314
CPC分类号： C22B1/245 , C21B13/105 , C22B5/10
摘要： An apparatus for producing reduced iron dries agglomerates, pelletized from a powdery mixture of an iron oxide powder and a reducing agent, in a drying chamber, preheats the dried agglomerates in a preheating chamber, and then reduces the preheated agglomerates in a high temperature atmosphere of a reducing furnace. In the preheating chamber, an off-gas from the reducing furnace is convected to preheat the dried agglomerates. A decrease in the fuel cost, and downsizing of the equipment can be achieved by effective use of the sensible heat of the off-gas discharged from the reducing furnace. Moreover, a downsized, simplified system for treatment of the off-gas is realized by decreasing the amount of the off-gas.
摘要翻译： 用于生产还原铁的装置在干燥室中将由氧化铁粉末和还原剂的粉末状混合物造粒的团块干燥，在预热室中预热干燥的附聚物，然后在预热的聚合物的高温气氛 还原炉。 在预热室中，来自还原炉的废气被对流以预热干燥的附聚物。 可以通过有效地利用从还原炉排出的废气的显热来实现燃料成本的降低和设备的小型化。 此外，通过减少废气的量来实现废气处理的简化的简化系统。
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