Vanadium Oxide Reduction Behavior in Blast Furnace

In order to determine factors influencing the lumpy zone,soft melting and dropping zone and re-duction of vanadium oxide in hearth in blast furnace,a simulation experiment on reduction of vanadium ox-ide has been performed in combination of thermodynamic calculation.The results prove that improving re-duction performance of furnace burden favors reduction of vanadium oxides in the lumpy zone.The increase of temperature in soft melting and dropping zone and decrease of FeO content in early slag are beneficial for reduction of vanadium.The temperature of hearth should remain above 1 450℃,and reaction between slag and iron benefits to improve yield rate of V in molten iron.Reduction reaction between silicon and vanadi-um oxide not only promote reduction of vanadium,but also reduces silicon content of iron liquid.