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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。
In view of the fact that the flow width of the charge in the actual operation of the blast furnace is different from that of the gear, the distribution of gas flow fluctuates greatly after the bell-less top fabric and the blast furnace runs in difficulty. The shortage of the calculation of the flow width in the operation of the blast furnace is mainly considered The influence of load on the flow width was analyzed. The effect of Coriolis force on the flow width was analyzed. The Coriolis force was considered to calculate the flow width by section, and the error of the horizontal width of the chute exit was corrected. The mathematical model of the flow width of bellless roof fabric. Through the 1:10 model test on the industrial site, the correctness and rationality of this mathematical model in calculating the width of the material flow were verified. The principle that the width of the material flow and the angle of the chute were adjusted was applied to a blast furnace of 2 500 m3, and the distribution of the material was reasonable , Stable air flow, the purpose of blast furnace along the line.