水钢采用低比例的钒钛矿高炉炼铁,获得含有钒钛等微量元素的铁水,其性质既不同于一般铁水,也不同于高钒钛铁水,为了弄清这些微量元素对转炉炼钢工艺的影响,分析了钒钛钢渣的物相、熔化性,用高频感应炉模拟转炉吹炼过程并结合生产试验得知：1）普通铁水的碳焰温度为1 370～1 400℃,水钢铁水的碳焰温度为1 400～1 430℃,比普通铁水高约30℃;2）在较小的供氧速度下,铁水中的钛、硅、锰可与碳分阶段氧化;3）含有TiO2炉渣的发泡能力、储泡能力强于不含TiO2的炉渣,炉渣中的CO反应性气泡使炉渣的发泡更加严重;4）在转炉吹炼前中期,炉渣中过高的FeO、较低的碱度,炉渣中大量的C-FeO反应,以及含有TiO2炉渣的储泡性质,是喷溅的主要原因。
V-Ti-tracing-elements hot metal,which was different from common hot metal and high V-Ti hot metal,was produced using low proportion iron ore involving V-Ti element.In order to know the effect of these trace elements on converter steelmaking process,the phase compositions and melting characters of V-Ti slag were analyzed and the steelmaking process in converter was simulated by high frequency induction furnace.The results show that： 1） carbon flame temperature of general hot metal is 1 370-1 400 ℃,carbon flame temperature of Shuigang hot metal is 1 400-1 430 ℃ which is 30 ℃ higher than that of general hot metal;2） at a small rate of blowing oxygen,Ti,Si,Mn and C in melt can be oxidized one by one;3） foaming and foam storage capacity of TiO2-bearing slag is larger than that of slag without TiO2,active CO bubbles in slag exacerbate slag foaming;4） in prior and mid period of converter steelmaking,super high FeO content,relatively low alkalinity and C-FeO reaction in slag and foam storage capacity of TiO2-bearing slag are main reasons for the slopping.
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