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利用水模拟试验,将转炉提钒喷粉过程的气粉混合物近似看作一种密度较大的气相流,通过测定电导率对比不同喷粉流量和喷粉位置混匀时间的变化,研究150t提钒转炉喷粉的搅拌效果和冲击特性。研究发现:采用底吹喷粉时,容易发生钢水倒灌堵塞喷粉枪;采用低于熔池液面300mm转炉侧部30°喷吹时,混匀时间仅为54.5s;侧吹30°下部关于轴A的对称位置应为最佳喷粉位置,有利于增强提钒熔池搅拌能力,促进提钒反应进行,为实现转炉喷粉高效提钒提供理论支撑。
Using the water simulation test, the mixture of air and powder in the process of vanadium-bearing dusting in the converter is roughly regarded as a kind of gas flow with a relatively large density. By comparing the conductivity with the change of mixing time at different dusting flow rates and dusting positions, Mixing effect and impact characteristics of vanadium converter dusting. The study found that: the bottom blown dusting, prone to molten steel plugging spray gun prone; the use of the lower than the molten pool 300mm side of the converter 30 ° blow, the mixing time is only 54.5s; side blowing 30 ° lower About The symmetrical position of axis A should be the best position for dusting, which is beneficial to enhance the stirring ability of vanadium-bearing molten pool and promote the reaction of vanadium extraction, which can provide theoretical support for efficient vanadium removal from converter dusting.