高炉无钟炉顶布料料流宽度数学模型及试验研究

来源期刊：钢铁2010年第1期

论文作者：杜鹏宇 程树森 胡祖瑞 吴桐

文章页码：14 - 18

关键词：无钟炉顶； 料流宽度； 数学模型； 模型试验

Key words：bell-less top； burden width； mathematical model； model experiment

摘    要：针对高炉实际操作过程中炉料的料流宽度与档位划分不一致,无钟炉顶布料后煤气流分布波动变化大,高炉顺行困难的问题,对布料操作中料流宽度计算的不足,重点考虑了炉料的受力变化对料流宽度的影响,分析了科氏力对料流宽度的影响,提出了分段考虑科氏力来计算料流宽度,修正计算了溜槽出口水平宽度的误差,建立了无钟炉顶布料的料流宽度数学模型。通过工业现场1∶10的模型试验,验证了该数学模型计算料流宽度的正确性和合理性,将料流宽度和溜槽倾角调整相一致的原则应用于2 500 m³高炉,达到了布料分布合理,气流稳定,高炉顺行的目的。

Abstract: Opinion’s concerning the uncoordinated principle between the burden width and burden trajectory width in process of iron-making,and it is fluctuated to the flows distribution of CO after charge of bell-less top to the instable status of blast furnace.In the mathematical model of burden width,it is emphasized the force to width of burden trajectory from a kinematic view point.Analyzing effect of Coriolis force to calculation of burden width and a deviate angle of maximum burden velocity,reducing error rate of horizontal width,raising segment calculate the width of burden trajectory.The mathematical model is established to adopt industrial model experimental on the ratio of 1∶10 blast furnace,the numerical model of burden width is validated to be right and rational.After applying mathematical model in a 2500 cubic meter blast furnace,in which chute angle cooperate with width burden,it is validated to burden file ration,flows stabilizing,and blast furnace smoothly working.