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首页> 外文期刊>ISIJ international >Fluidization Characteristics of Iron Ore Fines of Wide Size Distribution in a Cold Tapered Gas-Solid Fluidized Bed
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Fluidization Characteristics of Iron Ore Fines of Wide Size Distribution in a Cold Tapered Gas-Solid Fluidized Bed

机译：冷锥气固流化床中宽分布铁矿粉的流化特性

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摘要

The effects of taper angle on the particle size distribution in a tapered gas-solid fluidized bed was experimentally investigated using two different iron ore fines (-5 mm and -8 mm) of wide size distribution. From the analysis of axial and radial particle size distribution of iron ore fines taken from the bed, it was found that the taper angle is the most critical parameter to minimize the size segregation along the fluidized bed level and there is a downward flow of finer particles along the walls. The effect of superficial gas velocity on the particle size distribution in fluidized bed and the effect of ore size on the taper angle required for minimizing the size segregation are also discussed. The present study has endeavored to obtain fundamental data for an effective plant operation and design of a fluidized-bed reduction furnace using sinterfeed through fully understanding the effects a of taper angle and the gas velocity on the particle size distribution in a cold tapered gas-solid fluidized bed.
机译：使用两种粒径分布较宽的铁矿粉（-5 mm和-8 mm），通过实验研究了锥角对锥形气固流化床中粒径分布的影响。通过分析从床中提取的铁矿粉的轴向和径向粒度分布，发现锥角是使流化床液面尺寸偏析最小化的最关键参数，并且细颗粒向下流动沿着墙壁。还讨论了表观气体速度对流化床中粒度分布的影响，以及矿石尺寸对最小化尺寸偏析所需的锥角的影响。本研究通过充分理解锥角和气体速度对冷锥型气固中粒径分布的影响，努力获得有效的设备操作和使用烧结进料的流化床还原炉设计的基础数据。流化床。

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