公开(公告)号：US6030432A

公开(公告)日：2000-02-29

申请号：US913505

申请日：1997-11-17

申请人： Werner Leopold Kepplinger ,  Felix Wallner ,  Johannes-Leopold Schnek ,  Udo Gennari ,  Il-Ock Lee ,  Yong-Ha Kim ,  Gyu-Dae Park

发明人： Werner Leopold Kepplinger ,  Felix Wallner ,  Johannes-Leopold Schnek ,  Udo Gennari ,  Il-Ock Lee ,  Yong-Ha Kim ,  Gyu-Dae Park

IPC分类号： F27B15/00 ,  C21B13/00 ,  C22B5/14 ,  C21B11/00 ,  C22B1/10

CPC分类号： C21B13/0033 ,  Y02P10/136

摘要： In a process for the reduction of fine ore by reducing gas in the fluidized bed method, the following characteristic features are realized in order to achieve a uniform and even degree of metallization at optimum utilization of the reducing gas and while minimizing the amount of reducing gas employed, that the fine ore is fractionated by aid of the reducing gas into at least two fractions having different grain size distributions, that each fraction is reduced by the reducing gas in a separate fluidized bed, wherein the reducing gas maintains a first fluidized bed containing the coarse-grain fraction and separates the fine-grain fraction from the same, is accelerated together with the fine-grain fraction, subsequently under pressure release forms a further fluidized bed, into which it is continuously injected in a radially symmetrical manner and from below, and wherein, furthermore, secondary reducing gas additionally is directly injected into the further fluidized bed in a radially symmetrical manner, and that reduced ore is discharged from both the first and the second fluidized beds.

摘要翻译： PCT No.PCT / AT96 / 00045 Sec。 371日期：1997年11月17日 102（e）1997年11月17日PCT PCT 1996年3月11日PCT公布。 公开号WO96 / 29435 日期1996年9月26日在流化床方法中通过还原气体还原细矿石的方法中，实现了以下特征，以便在最佳利用还原气体的同时实现均匀均匀的金属化，同时最小化 所用的还原气体的量，将细矿石通过还原气体分级成至少两个具有不同粒度分布的馏分，每个馏分在单独的流化床中被还原气体还原，其中还原气体保持 含有粗晶粒部分并将细晶粒部分与其分离的第一流化床与细晶粒部分一起加速，随后在压力释放下形成另外的流化床，其中它以径向方式连续注入 另外，二次还原气体另外直接注入到另外的流化床中 d以径向对称的方式，并且还原的矿石从第一和第二流化床排出。

公开(公告)号：US5897829A

公开(公告)日：1999-04-27

申请号：US894802

申请日：1997-08-28

申请人： Hang Goo Kim ,  Il Ock Lee ,  Uoo Chang Chung ,  Yong Ha Kim

发明人： Hang Goo Kim ,  Il Ock Lee ,  Uoo Chang Chung ,  Yong Ha Kim

IPC分类号： C21B11/00 ,  C21B13/00 ,  C21B13/14 ,  F27B15/00

CPC分类号： C21B13/14 ,  C21B13/0033 ,  Y02P10/136

摘要： A device for three-stage fluidized bed for reducing a fine iron ore in accordance with the present invention comprises: a first single-type fluidized bed furnace for drying/pre-heating a fine iron ore in a bubbling fluidized state; a first cyclone for collecting fine iron ore particles entrained in an exhaust gas from the first fluidized bed furnace; a second single-type fluidized bed furnace for pre-reducing the fine iron ore dried/pre-heated in the first fluidized bed furnace; a second cyclone for collecting fine iron ore particles entrained in an exhaust gas from the second fluidized bed furnace; a third twin-type fluidized bed furnace comprising a first cylindrical reaction furnace and a second reaction furnace for finally reducing coarse iron ore particles and medium/fine iron ore particles, respectively, which are pre-reduced in the second fluidized bed furnace; a third cyclone for collecting medium/fine iron ore particles entrained in an exhaust gas from the first reaction furnace of the third fluidized bed furnace; and a fourth cyclone for collecting ultrafine iron ore particles entrained in an exhaust gas from the second furnace of the third fluidized bed furnace.

摘要翻译： PCT No.PCT / KR96 / 00261 Sec。 371日期1997年8月28日 102（e）日期1997年8月28日PCT 1996年12月28日PCT公布。 WO97 / 24463 PCT出版物 日本1997年7月10日根据本发明的用于还原精细铁矿石的三级流化床装置包括：用于干燥/预热起泡流化状态的细铁矿石的第一单式流化床炉 ; 用于收集夹带在来自第一流化床炉的废气中的细铁矿石颗粒的第一旋风器; 用于预还原在第一流化床炉中干燥/预热的细铁矿石的第二单流化床炉; 第二旋风器，用于收集夹带在来自第二流化床炉的废气中的细铁矿石颗粒; 第三双流化床炉，包括分别在第二流化床炉中预还原的第一圆柱反应炉和第二反应炉，用于最终还原粗铁矿石颗粒和中/细铁矿石颗粒; 用于收集夹带在来自第三流化床炉的第一反应炉的废气中的中/细铁矿石颗粒的第三旋风分离器; 以及第四旋风分离器，用于收集夹带在来自第三流化床炉的第二炉的废气中的超细铁矿石颗粒。

公开(公告)号：US5785733A

公开(公告)日：1998-07-28

申请号：US702517

申请日：1996-10-28

申请人： Il Ock Lee ,  Yong Ha Kim ,  Bong Jin Jung ,  Hang Goo Kim ,  Franz Hauzenberger

发明人： Il Ock Lee ,  Yong Ha Kim ,  Bong Jin Jung ,  Hang Goo Kim ,  Franz Hauzenberger

IPC分类号： C21B11/00 ,  C21B13/00 ,  C21B13/14

CPC分类号： C21B13/002 ,  C21B13/0033 ,  C21B13/14 ,  Y02P10/136 ,  Y02P10/216

摘要： A reduction apparatus and a method for efficient reduction of fine iron ores of wide grain range comprising serially arranged a drying/preheating furnace, a first reducing furnace for prereduction and a second reduction furnace for final reduction, each working with bubbling fluidized bed and being connected each to a cyclone for capturing iron ore dust contained in the exhaust gases, having each a tapered shape smoothly expanded outwards and thus considerably decreasing elutriation of fine particles, increasing the reduction efficiency and enhancing the utilization of the reducing gas.

摘要翻译： PCT No.PCT / KR95 / 00182 Sec。 371日期1996年10月28日第 102（e）日期1996年10月28日PCT提交1995年12月28日PCT公布。 出版物WO96 / 21045 日期：1996年7月11日一种用于有效还原宽晶粒范围的细铁矿的还原装置和方法，包括串联布置的干燥/预热炉，用于预还原的第一还原炉和用于最终还原的第二还原炉，每个都用起泡 流化床并且各自连接到旋风分离器，用于捕获废气中含有的铁矿石粉尘，每个锥形形状向外平滑地膨胀，从而大大减少细颗粒的淘析，从而提高还原效率并增强还原气体的利用。

公开(公告)号：US06416566B1

公开(公告)日：2002-07-09

申请号：US09221494

申请日：1998-12-28

申请人： Werner Leopold Kepplinger ,  Felix Wallner ,  Johannes Schenk ,  Il-Ock Lee ,  Yong-Ha Kim ,  Moon Duk Park

发明人： Werner Leopold Kepplinger ,  Felix Wallner ,  Johannes Schenk ,  Il-Ock Lee ,  Yong-Ha Kim ,  Moon Duk Park

IPC分类号： C21B1314

CPC分类号： C21B13/14 ,  Y02P10/136

摘要： In the process for the production of liquid pig iron 943) or liquid steel pre-products from charging substances comprising iron ore (5) and fluxes and at least partially containing a portion of fines, the iron ore is directly reduced to sponge iron in at least two reduction stages (1, 2) by the fluidized bed method, the sponge iron is melted in a melt-down gasifying zone (39) under the supply of carbon carriers and an oxygen-containing gas, and a CO- and H2-containing reducing gas is produced which is injected into reduction zones of the reduction stages (1, 2), is reacted there, is withdrawn as a top gas and optionally is supplied to a consumer. To achieve uniform reduction of the iron ore at optimum exploitation of the reducing gas, the iron ore (5) in a first reduction stage (1) by aid of the reducing gas is fractionated into at least two fractions having different grain size distributions each, each fraction is reduced by the reducing gas in a separate fluidized bed (6, 15), wherein the reducing gas maintains a first fluidized bed (6) containing the coarse-grain fraction and separates the fine-grain fraction from the same, and wherein, further, reducing gas is additionally introduced into the further fluidized bed (15) directly reduced iron ore (5) is discharged both from the first and from the further fluidized bed (6, 15) and the fine- and the coarse-grain fraction reduced in the first reduction stage (1) are further reduced in at least one further reduction stage (2) operating in the same manner as the first reduction stage (1) and from the last reduction stage (2) the fine-grain fraction is introduced into the melt-down gasifying zone (39) while being agglomerated by provision of oxygen, and the coarse-grain fraction is fed directly into the melt-down gasifying zone (39) gravitationally (FIG. 1).

摘要翻译： 在生产液体生铁943）或含铁矿石（5）和助熔剂的物料的液态钢产品的过程中，至少部分含有一部分细粉，铁矿石直接还原成海绵铁 通过流化床法将至少两个还原阶段（1,2），海绵铁在碳载体和含氧气体的供应下在熔化气化区（39）中熔化，并且CO-和H 2 - 产生含有还原气体的废气，其被注入到还原段（1,2）的还原区中，在其中反应，作为顶部气体排出并任选地供应给消费者。 为了在最佳利用还原气体的情况下实现铁矿石的均匀还原，通过还原气体将第一还原段（1）中的铁矿石（5）分级成至少两个具有不同粒度分布的级分， 在分离的流化床（6,15）中每个馏分被还原气体还原，其中还原气体保持含有粗晶粒部分的第一流化床（6），并将细晶粒部分与其分离，其中 进一步地，将还原气体另外引入到另外的流化床（15）中，直接还原的铁矿石（5）从第一流化床（6,15）和另外的流化床（6,15）排出，并且精细和粗颗粒馏分 在与第一还原阶段（1）相同的方式和从最后的还原阶段（2）操作的至少一个另外的还原阶段（2）中，第一还原阶段（1）中的还原进一步减少，细晶粒分数为 引入熔化 气化区（39），同时通过提供氧气而聚集，并且粗粒部分重力地直接进入熔化气化区（39）。 1）。

公开(公告)号：US06241801B1

公开(公告)日：2001-06-05

申请号：US09193544

申请日：1998-11-17

申请人： Werner Leopold Kepplinger ,  Felix Wallner ,  Johannes-Leopold Schenk ,  Franz Hauzenberger ,  Il-Ock Lee

发明人： Werner Leopold Kepplinger ,  Felix Wallner ,  Johannes-Leopold Schenk ,  Franz Hauzenberger ,  Il-Ock Lee

IPC分类号： C22B514

CPC分类号： C21B13/002 ,  C21B13/0033 ,  C21B13/14 ,  C21B2100/44 ,  C21B2100/66 ,  C22B5/14 ,  F27B15/00 ,  Y02P10/136

摘要： In a method for treating particulate material in the fluidized bed method, the particulate material is maintained in a fluidized bed by a treating gas flowing from bottom to top and thereby is treated. To minimize the consumption of treating gas and to reduce entrainment of fine particles by the treating gas, a particulate material having a wide grain distribution and a relatively high portion of fines is used for treatment and the treating gas in the fluidized bed is maintained at a superficial velocity less than the velocity required for fluidizing the largest particles of said particulate material.

摘要翻译： 在流化床方法中处理颗粒材料的方法中，颗粒材料通过从底部向上流动的处理气体保持在流化床中，从而被处理。 为了最小化处理气体的消耗并且减少由处理气体引起的细颗粒的夹带，使用具有宽晶粒分布和较高部分细粒的颗粒材料用于处理，并且流化床中的处理气体保持在 表面速度小于使所述颗粒材料的最大颗粒流化所需的速度。

公开(公告)号：US5919281A

公开(公告)日：1999-07-06

申请号：US894670

申请日：1997-08-25

申请人： Dae Gyu Park ,  Suk In Park ,  Il Ock Lee

发明人： Dae Gyu Park ,  Suk In Park ,  Il Ock Lee

IPC分类号： C21B11/00 ,  C21B13/00 ,  C21B13/14 ,  F27B15/00

CPC分类号： C21B13/0033 ,  Y02P10/136 ,  Y02P10/216

摘要： The 2-stage fluidized bed furnace for pre-reducing a fine iron ore comprises a first stage fluidized bed furnace for receiving the fine iron ore from a storage hopper, discharging medium/small particle size iron ore to the upper part thereof, and reducing a coarse particle size iron ore while forming a bubbling fluidized bed; a second stage fluidized bed furnace for receiving the medium/small particle size iron ore discharged from the upper part of the first stage and reducing it while forming a turbulent fluidized bed; and a first hot cyclone for collecting the small particle size iron ore contained in the discharged gas from the second stage fluidized bed furnace, the first stage furnace being formed in an upper-narrowed, lower-expanded shape and comprising a narrow, upper portion, a transitional, slanted portion and a wide, lower portion, the second stage furnace being in an upper-expanded, lower-narrowed shape and comprising a wide, upper portion, a transitional, slanted portion and a narrow, lower portion.

摘要翻译： PCT No.PCT / KR96 / 00249 Sec。 371日期1997年8月25日第 102（e）日期1997年8月25日PCT 1996年12月26日PCT公布。 公开号WO97 / 23655 日期1997年7月3日用于预还原精细铁矿石的2级流化床炉包括用于从储料斗接收细铁矿石的第一级流化床炉，将中等/小粒径铁矿石排放到上部 并且在形成鼓泡流化床的同时还原粗颗粒铁矿石; 第二级流化床炉，用于接收从第一阶段上部排出的中/小粒度铁矿石，并在形成湍流流化床的同时还原; 以及第一热旋风分离器，用于收集来自第二级流化床炉的排放气体中所含的小粒度铁矿石，第一级炉形成为上部变窄的较低膨胀形状，并且包括窄的上部， 过渡的倾斜部分和宽的下部，第二级炉处于上部膨胀的下部变窄的形状，并且包括宽的上部，过渡的倾斜部分和较窄的下部。

公开(公告)号：US06491738B1

公开(公告)日：2002-12-10

申请号：US09763299

申请日：2001-02-20

申请人： Il Ock Lee ,  Hang Goo Kim ,  Uoo Chang Jung ,  Nag Joon Choi

发明人： Il Ock Lee ,  Hang Goo Kim ,  Uoo Chang Jung ,  Nag Joon Choi

IPC分类号： C21B1314

CPC分类号： C21B13/002 ,  C21B13/0033 ,  C21B13/14 ,  C21B2100/44 ,  C21B2100/66 ,  Y02P10/136 ,  Y02P10/212

摘要： A two-stage fluidized bed reducing apparatus and a reducing method for fine iron ore of a wide particle size distribution with an increased degree of utilization of the reducing gas. Fine iron particles dropping through the holes of a gas distributor can be recycled into the fluidized bed furnace, thereby preventing an impediment of the reducing gas flow due to abnormal defluidizing or channeling. A first fluidized bed furnace dries, pre-heats and pre-reduces the fine iron ore, and a second fluidized bed furnace finally reduces the pre-reduced iron ore. Downstream of the respective fluidized beds are installed intermediate hoppers and gas/solid sealing valves. Thus, the fine iron ore particles which drop through the holes of gas distributors during the abnormal operation are recycled to the furnaces. Accordingly, the gas flow is not impeded.

摘要翻译： 一种二级流化床还原装置和一种具有较宽粒度分布的细铁矿石的还原方法，其还原气体的利用程度提高。 通过气体分配器的孔落下的细小铁颗粒可以循环进入流化床炉，从而防止由于异常流失或引流引起的还原气流的阻碍。 第一流化床炉干燥，预热和预还原细铁矿石，第二流化床炉最终减少预还原的铁矿石。 各流化床的下游安装有中间料斗和气体/固体密封阀。 因此，在异常操作期间通过气体分配器的孔落下的细铁矿石颗粒被再循环到炉中。 因此，气流不受阻碍。

公开(公告)号：US06254663B1

公开(公告)日：2001-07-03

申请号：US09221494

申请日：1998-12-28

申请人： Werner Leopold Kepplinger ,  Felix Wallner ,  Johannes Schenk ,  Il-Ock Lee ,  Yong-Ha Kim ,  Moon Duk Park

发明人： Werner Leopold Kepplinger ,  Felix Wallner ,  Johannes Schenk ,  Il-Ock Lee ,  Yong-Ha Kim ,  Moon Duk Park

IPC分类号： C21B1314

摘要： In the process for the production of liquid pig iron 943) or liquid steel pre-products from charging substances comprising iron ore (5) and fluxes and at least partially containing a portion of fines, the iron ore is directly reduced to sponge iron in at least two reduction stages (1, 2) by the fluidized bed method, the sponge iron is melted in a melt-down gasifying zone (39) under the supply of carbon carriers and an oxygen-containing gas, and a CO- and H2-containing reducing gas is produced which is injected into reduction zones of the reduction stages (1, 2), is reacted there, is withdrawn as a top gas and optionally is supplied to a consumer. To achieve uniform reduction of the iron ore at optimum exploitation of the reducing gas, the iron ore (5) in a first reduction stage (1) by aid of the reducing gas is fractionated into at least two fractions having different grain size distributions each, each fraction is reduced by the reducing gas in a separate fluidized bed (6, 15), wherein the reducing gas maintains a first fluidized bed (6) containing the coarse-grain fraction and separates the fine-grain fraction from the same, and wherein, further, reducing gas is additionally introduced into the further fluidized bed (15) directly reduced iron ore (5) is discharged both from the first and from the further fluidized bed (6, 15) and the fine- and the coarse-grain fraction reduced in the first reduction stage (1) are further reduced in at least one further reduction stage (2) operating in the same manner as the first reduction stage (1) and from the last reduction stage (2) the fine-grain fraction is introduced into the melt-down gasifying zone (39) while being agglomerated by provision of oxygen, and the coarse-grain fraction is fed directly into the melt-down gasifying zone (39) gravitationally (FIG. 1).

公开(公告)号：US06224819B1

公开(公告)日：2001-05-01

申请号：US09125549

申请日：1998-08-27

申请人： Yong Ha Kim ,  Il Ock Lee ,  Hang Goo Kim

发明人： Yong Ha Kim ,  Il Ock Lee ,  Hang Goo Kim

IPC分类号： C22B110

CPC分类号： C21B13/0033 ,  Y02P10/136 ,  Y02P10/216

摘要： A fluidized bed reducing system for reducing a fine iron ore is disclosed, in which the structure of the fluidized bed reducing furnace is improved such that the coarse iron ore particles are distributed in the lower portion of the fluidized bed within the furnace and the fine iron ore particles are distributed in the upper portion of the fluidized bed. Thus, the average residence times of the particles in the furnace are adjusted differently for different ore sizes, so that the reducing efficiency can be improved, and that the residence time of the reducing gas in the furnace can be extended, thereby improving the degree of gas utilization. The fluidized bed reducing system for reducing a fine iron ore includes: an upper iron ore outlet for discharging fine iron ore particles; a lower iron ore outlet for discharging coarse iron ore particles; a gas distributor installed in a lower portion of a reducing furnace; a gas inlet formed on a lower portion of the reducing furnace for introducing a reducing gas; an iron ore inlet for supplying an iron ore of wide particle size distribution; a circulating duct connected to an upper portion of the reducing furnace for discharging extremely fine iron ore particles together with the reducing gas; a particle capturing device an extremely fine iron ore recycling duct. The fluidized bed reducing furnace includes a cylindrical upper portion and a tapered lower portion, the tapered portion being in a wide-upper-narrow-lower shape.

摘要翻译： 公开了一种用于还原细铁矿石的流化床还原体系，其中流化床还原炉的结构得到改善，使得粗铁矿石颗粒分布在炉内的流化床的下部，细铁 矿石颗粒分布在流化床的上部。 因此，对于不同的矿石尺寸，对炉中的颗粒的平均停留时间进行不同的调节，从而可以提高还原效率，并且可以延长还原气体在炉中的停留时间，从而提高 天然气利用。 用于还原细铁矿石的流化床还原系统包括：用于排出细铁矿石颗粒的上铁矿石出口; 用于排出粗铁矿石颗粒的下铁矿石出口; 安装在还原炉的下部的气体分配器; 气体入口，形成在所述还原炉的下部，用于引入还原气体; 用于供应宽粒度分布的铁矿石的铁矿石入口; 与还原炉的上部连接的循环管道，用于与还原气体一起排出极细的铁矿石颗粒; 颗粒捕获装置是极细的铁矿石循环管道。 流化床还原炉包括圆柱形上部和锥形下部，锥形部分处于宽 - 上 - 下 - 窄 - 下形状。

公开(公告)号：US6086653A

公开(公告)日：2000-07-11

申请号：US125489

申请日：1998-08-19

申请人： Sang Hoon Joo ,  Min Young Cho ,  Il Ock Lee

发明人： Sang Hoon Joo ,  Min Young Cho ,  Il Ock Lee

IPC分类号： C21B11/00 ,  C21B13/00 ,  C21B13/02 ,  C21B13/14 ,  F27B1/20 ,  F27D3/00 ,  F27D3/08

CPC分类号： C21B13/002 ,  C21B13/14 ,  F27D3/0025 ,  F27D3/08 ,  Y02P10/136 ,  Y02P10/216

摘要： A smelting reduction apparatus and a method for producing molten pig iron using the smelting reduction apparatus are disclosed. The molten pig iron is produced by using iron ore, sintered ore or iron pellets, so that the reduced iron discharge operation from a pre-reducing furnace to a melter-gasifier would not give any influence to the operation of the pre-reducing furnace. An iron ore is pre-reduced at a pre-reducing furnace by utilizing a reducing off-gas which is produced from a melter-gasifier. The pre-reduced iron ore is melted and reduced at the melter-gasifier. The reducing gas which is discharged from the melter-gasifier is supplied through an ascending duct and a cyclone into the pre-reducing furnace. The fine iron ore which is collected at the cyclone is spouted through a recycling device and a melter-burner into the melter-gasifier. A part of the reducing off-gas which has passed through the cyclone is supplied through a ventury scrubber, a compressor and a compressed gas circulating duct into the ascending duct. In such an apparatus, a reduced iron discharge device is installed between the pre-reducing furnace and the melter-gasifier.

摘要翻译： PCT No.PCT / KR97 / 00274 Sec。 371日期1998年8月19日 102（e）1998年8月19日PCT 1997年12月19日PCT PCT。 公开号WO98 / 28448 日期1998年7月2日公开了一种熔融还原装置和使用该熔融还原装置生产熔融生铁的方法。 熔炼的生铁通过使用铁矿石，烧结矿或铁丸制成，使得从预还原炉到熔炉 - 气化炉的还原铁排放操作不会对预还原炉的操作产生任何影响。 铁矿石在预还原炉中通过利用由熔炉 - 气化器产生的还原废气预还原。 预还原的铁矿石在熔炉 - 气化器处熔化并还原。 从熔炉 - 气化器排出的还原气体通过上升管道和旋风分离器供给到预还原炉中。 在旋风分离器收集的细铁矿石通过回收装置和熔炉燃烧器喷射到熔炉 - 气化器中。 已经通过旋风分离器的一部分还原废气通过排气净化器，压缩机和压缩气体循环管道供应到上升管道中。 在这种装置中，还原铁排放装置安装在预还原炉和熔炉 - 气化器之间。