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长期以来,我厂高炉采用富氧鼓风和喷油操作,掌握了高炉风口区理论燃烧温度适宜的操作范围。1980年开始,高炉停止喷油后,炉况严重不顺,被迫将鼓风富氧率降低,高炉产量亦相应减少。原因在于停止喷油后风口区理论燃烧温度的变化超越了适宜的范围,破坏了风口区的热平衡。如何维持鼓风中一定的富氧率,并稳定高炉操作,是我们在停油操作中遇到的新问题。美国威尔顿厂,日本水岛1号、2号高炉,苏联卡拉干达3200
For a long time, our blast furnace using oxygen-rich blast and fuel injection operation, mastered the blast furnace tuyere theoretical combustion temperature suitable operating range. Since 1980, when the blast furnace stopped fuel injection, the condition of the furnace was not smooth and was obliged to reduce the oxygen enrichment rate of the blast furnace and reduce the blast furnace output accordingly. The reason is that the change of the theoretical combustion temperature in the tuyere area after stopping the injection exceeds the appropriate range and spoils the heat balance in the tuyere area. How to maintain a certain rate of oxygen enrichment in the blast and stabilize the operation of the blast furnace are new problems we encountered in the process of stopping oil. Wilton factory in the United States, Japan’s Mizushima 1, No. 2 blast furnace, the Soviet Union Karaganda 3200