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本文分析了四座大小不同高炉的热平衡实测数据后,认为当冶炼条件相近时,大高炉焦比低于小高炉的主要原因不是因为小高炉的热损失大,而是大高炉的炉身高度大大高于小高炉,可以保证大高炉有较高的间接还原度。可见,炉身高度至关重要。不看具体情况,盲目追求高炉矮胖化是不妥当的;特别是小高炉故意降低炉身高度以求得矮胖化炉型更是错误的,也是没有理论根据的。
After analyzing the measured data of heat balance of four different blast furnaces, it is considered that the main reason why the coke ratio of the blast furnace is lower than that of a small blast furnace when the smelting conditions are similar is not that the heat loss of the blast furnace is large, but the height of the blast furnace is much higher In the small blast furnace, you can guarantee a large blast furnace has a high degree of indirect reduction. Visible, the height of the shaft is crucial. Not looking at the specific circumstances, it is improper to blindly pursue the slamming of the blast furnace. In particular, it is even wrong for the small blast furnace to purposely reduce the height of the furnace body to obtain a short fattening furnace, and there is no theoretical basis for it.