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高炉入炉原料的整粒状况是影响高炉炉况的重要因素之一。一般来讲原料粒径愈小则还原性愈好,但炉内通气阻力却与炉料粒径的1.2次方成反比例而增高,因此粉状料容易导致高炉坐料或悬料故障。为了在炉前从入炉原料中除去粉状料,目前主要使用网状筛,但易发生网眼堵塞和破损事故,所以研究了风力分级法的适用性。本文介绍了水平式风力分级法的筛分性能的这实验结果和理论分析。影响原料筛分尺寸精度的主要因素,首先是被分级的颗粒群的表现比重和阻力系数的变动,第二是在
Blast Furnace Into the raw material of the whole grain status is one of the important factors affecting the blast furnace conditions. In general, the smaller the particle size of the raw material, the better the reducing property. However, the resistance of the furnace is increased inversely with the square of the 1.2 size of the charge. Therefore, the powdery material easily causes the blasting material or the suspended material to malfunction. In order to remove the powder material from the furnace raw material before the furnace, mesh meshes are mainly used at present, but clogging and breakage of meshes are easy to occur. Therefore, the applicability of the wind grading method is studied. This paper introduces the experimental results and theoretical analysis of the screening performance of horizontal wind classification. The main factors influencing the sizing accuracy of raw materials are firstly the variation of the specific gravity and the drag coefficient of the graded particles,