高炉块状带压差模型  

Model of Pressure Drop of Lump Zone in Blast Furnace

作　　者：续飞飞[1] 程树森[1] 赵宏博[1] 马金芳[2] 解宁强[2] 

机构地区：[1]北京科技大学高效钢铁冶金国家重点实验室,北京100083 [2]首钢迁钢公司,河北迁安064400

出　　处：《钢铁研究学报》2013年第5期8-13,共6页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目(60872147);国家十一五科技支撑计划资助项目(2006BAE03A01)

摘　　要：高炉上部悬料是高炉生产过程中常见的问题,影响高炉的顺行与高产。块状带压差反映了高炉上部悬料的可能性,更精确地计算块状带压差对高炉生产有重要的指导意义。为了使块状带压差计算结果更符合高炉实际,在原有计算模型的基础上考虑了温度变化影响。基于此模型研究了高压操作与料柱透气性、高炉顺行之间的关系;以迁钢2 560m3高炉为例进行计算,计算结果与高炉块状带压差的实测值相符。研究发现:随着顶压的提高,炉料孔隙度、粒径变化对块状带压差的影响幅度越来越小。将该模型应用于处理高炉上部悬料问题时,根据实际炉况计算出在不同顶压下块状带压差随鼓风量的变化曲线,预测操作过程中块状带压差的变化趋势,为定量化处理高炉上部悬料问题提供了参考数据。In the processing of blast furnace, hanging in lump zone is a common problem, which has great influence on smooth operation and high production. Meanwhile, pressure drop of lump zone can directly inflect the - ty of hanging in the lump zone. Therefore, in order to make calculated value consist with the practice of BF, a new mathematic model was built. The relationship among high pressure operation, burden permeability and smooth operation was investigated, which was based on actual production of blast furnace of Qian Steel. The calculating resuits are in accord with the results of measuring in actual processing. Meanwhile, effective range of changes of burden＇s diameter and voidage for pressure drop of lump zoon becomes smaller and smaller as the increasing of top pressure. The model can be ported to operate the hanging problems, and used to predict the change trend of lump zone＇s pressure drop with the variety of top pressure and blast volume, which can give the reference data for operator in the process of dealing with the problem of hanging.

关 键 词：高炉 块状带压差 上部悬料 数学模型 

分 类 号：TF53[冶金工程—钢铁冶金]