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1.绪言近年来,从降低炼铁与炼钢间的总成本和熔炼高纯度钢水的观点出发,降低铁水含硅量愈益显得重要。一般认为,抑制SiO气体的生成、降低软熔带高度和降低总收入热量对于降低[Si]是最有效的。水岛钢铁厂基于这种考虑,在第一阶段采取降低风口前温度抑制生成气态SiO并控制冷却壁热负荷来降低软熔带高度的办法,于1983年底使水岛2号高炉铁水[Si]从0.40%降低到0.25%。接着,第二阶段通过调整炉渣成份力图进一步降低[Si]且同时降
1. INTRODUCTION In recent years, it has become increasingly important to reduce the amount of silicon in hot metal in order to reduce the total cost of producing iron and steel and to melt high-purity molten steel. It is generally believed that it is most effective to reduce the generation of SiO gas, decrease the reflow ribbon height, and reduce the total revenue heat to reduce [Si]. Based on this consideration, the Mizushima Steel Plant adopted a method of reducing the temperature before the tuyere to suppress the generation of gaseous SiO and controlling the thermal load on the cooling wall to reduce the height of the reflowed molten slag in the first stage. At the end of 1983, the molten iron [Si] Decreased from 0.40% to 0.25%. Then, the second stage is to further reduce [Si] and reduce simultaneously by adjusting the slag composition