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1. 发明申请

WO1997027337A1 METHOD FOR OPERATING SHAFT FURNACE 审中-公开
标题翻译：操作轴承炉的方法
公开(公告)号：WO1997027337A1
公开(公告)日：1997-07-31
申请号：PCT/JP1997000164
申请日：1997-01-24
申请人： NIPPON STEEL CORPORATION , NAITO, Masaaki , KONNO, Norimitsu , FUJIWARA, Yasuhiko , ARAKI, Kyoichi , KOKUBUN, Teruhiko , OBARA, Tadashi , OBARA, Yasushi
发明人： NIPPON STEEL CORPORATION
IPC分类号： C21B11/02
CPC分类号： C21B5/008 , C21B11/02 , C21B13/023 , C21C5/56 , Y02P10/216
摘要： A method for operating a shaft furnace which comprises charging the furnace with an iron source having a low degree of metallization and thus requiring reduction, an iron source having a high degree of metallization and thus requiring nothing but melting, and a solid fuel, and blowing an oxygen-containing gas at ordinary or higher temperature up to 600 DEG C into the furnace through tuyeres to reduce and melt the iron sources. The optimal values of eta co (gas utilization factor) are determined from the average degree of metallization of the iron sources, and the shaft furnace is controlled so that the effluent gas from the furnace has the optimal eta co values. The control is accomplished by regulating the height of the charge, regulating the height of the coke bed, etc., using multistage tuyeres, and radially partitioning the charge. Thus, the iron sources can be efficiently reduced and melted at a low fuel ratio.
摘要翻译：一种用于操作竖炉的方法，该方法包括：将具有低金属化程度并因此需要还原的铁源装入炉中，具有高度金属化的铁源，因此仅需要熔化，并且固体燃料和吹塑在通常或高于600℃的含氧气体通过风口进入炉中以减少和熔化铁源。 eta co（气体利用系数）的最优值由铁源的平均金属化度确定，并且控制竖炉，使得来自炉的废气具有最佳的η值。通过使用多级风口调节电荷的高度，调节焦炭床的高度等，以及径向分配电荷来实现控制。因此，可以以低燃料比有效地还原和熔融铁源。

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