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通过模拟高炉内部钒氧化物发生还原的三个主要反应区,并运用相关热力学计算,分别研究影响高炉块状带、软熔滴落带及炉缸钒氧化物还原的各种因素。研究结果表明:炉料还原性能的提高有利于钒在块状带的还原;软熔滴落带温度的升高、初渣中FeO量的降低都有利钒的还原;炉缸温度应维持在1 450℃以上,渣铁间V的反应有利于提高铁水V的收得率;硅与钒氧化物的耦合反应,不仅可促进钒氧化物的还原,而且可以降低生铁含硅量。
By simulating the three main reaction zones for the reduction of vanadium oxide inside the blast furnace and using the relevant thermodynamic calculations, various factors affecting the reduction of blast furnace block, soft drop zone and hearth vanadium oxide were studied respectively. The results show that the improvement of charging performance is beneficial to the reduction of vanadium in clumps; the temperature of soft dropping zone increases and the reduction of FeO in primary ladle is beneficial to the reduction of vanadium; the temperature in grate should be maintained at 1 450 ℃, the reaction between slag iron V is beneficial to improve the yield of molten iron V. The coupling reaction between silicon and vanadium oxide can not only promote the reduction of vanadium oxide, but also reduce the silicon content of pig iron.