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    • 9. 发明申请
    • DEVICE OF THREE-STAGE FLUIDIZED BED FURNACE TYPE FOR REDUCING FINE IRON ORE
    • 三级流化床炉用于减少铁矿石的装置
    • WO1997024463A1
    • 1997-07-10
    • PCT/KR1996000261
    • 1996-12-28
    • POHANG IRON & STEEL CO., LTD.RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGYVOEST-ALPINE INDUSTRIEANLAGENBAU GMBHKIM, Hang, GooLEE, Il, OckCHUNG, Uoo, ChangKIM, Yong, Ha
    • POHANG IRON & STEEL CO., LTD.RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGYVOEST-ALPINE INDUSTRIEANLAGENBAU GMBH
    • C21B13/14
    • C21B13/14C21B13/0033Y02P10/136
    • A device (1) for three-stage fluidized bed for reducing a fine iron ore in accordance with the present invention comprises: a first single-type fluidized bed furnance (10) 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 (10); a second single-type fluidized bed furnace (20) for pre-reducing the fine iron ore dried/pre-heated in the first fluidized bed furnace; a second cyclone (60) for collecting fine iron ore particles entrained in an exhaust gas from the second fluidized bed furnace (20); a third twin-type fluidized bed furnace (340) comprising a first cylindrical reaction furnace (30) and a second reaction furnace (40) for finally reducing coarse iron ore particles and medium/fine iron ore particles, respectively, which are pre-reduced in the second fluidized bed furnace (20); a third cyclone (70) for collecting medium/fine iron ore particles entrained in an exhaust gas from the first reaction furnace (30) of the third fluidized bed furnace (340); and a fourth cyclone (80) for collecting ultrafine iron ore particles entrained in an exhaust gas from the second furnace (40) of the third fluidized bed furnace (340).
    • 根据本发明的用于还原精细铁矿石的三级流化床的装置(1)包括:用于在鼓泡流化床中干燥/预热细铁矿石的第一单式流化床炉(10) 州; 用于收集夹带在来自第一流化床炉(10)的废气中的细铁矿石颗粒的第一旋风分离器; 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式流化床炉(20); 用于收集夹带在来自第二流化床炉(20)的废气中的细铁矿石颗粒的第二旋风分离器(60)。 第三双流化床炉(340),其包括分别最终还原预先还原的粗铁矿石颗粒和中/细铁矿石颗粒的第一圆柱形反应炉(30)和第二反应炉(40) 在第二流化床炉(20)中; 用于收集夹带在来自第三流化床炉(340)的第一反应炉(30)的废气中的中/细铁矿石颗粒的第三旋风分离器(70)。 和用于收集来自第三流化床炉(340)的第二炉(40)的排气中的超细铁矿石颗粒的第四旋风分离器(80)。