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本文简述了钒钛磁铁矿高炉冶炼产生泡沫渣的原因,认为主要是钛的低价氧化物和TiC的还原产生大量气体;同时由于钛渣成分复杂,表面张力小,增加了气泡的稳定性。稀释渣中TiO_2及抑TiO_2的还原均能起消泡作用。文中以各种图表资料说明其消泡效果,并浅析了消泡机理。最后对在大高炉上如何做到渣中TiO_2含量超过25％的情况下,仍能继续保持和改善高炉操作指标、增加生铁含钒量的问题作了研讨。认为采用综合炉料结构和坚持炉缸合理喷吹是两条有效手段。
In this paper, the reasons for foaming slag produced by blast furnace smelting of vanadium-titanium magnetite are briefly described. It is believed that the reduction of titanium suboxide and TiC mainly produces a large amount of gas. At the same time, due to the complex composition of titanium slag, the surface tension is small and the stability of bubble is increased Sex. Dilution of TiO_2 and TiO_2 reduction can play defoaming effect. In this paper, a variety of chart data to explain the defoaming effect, and analysis of the defoaming mechanism. Finally, how to maintain and improve the operation index of blast furnace and increase the vanadium content of pig iron is discussed in the case of how to make the content of TiO_2 in slag exceed 25% in large blast furnace. That the use of an integrated charge structure and adhere to a reasonable injection of the hearth are two effective means.