【摘要】 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。更多还原

【Abstract】 Through water simulation experiment,gas and powder mixture were thought as a larger density of gas phase flow in powder injection vanadium extraction process.The electrical conductivity were measured to compare mixing time of different powder injection flow and position experiments for studying stirring effect and impacting characteristics of injecting powder in the 150 t vanadium extraction converter.It is found that it is easy to block the injection nozzle by bottom injecting powder.When the nozzle is in the side part of 30 degrees and 300 mm lower than pool surface,the mixing time is only 54.5 seconds.So the position which is symmetric with side blowing place in 30 degrees about axis A should be the best powder injection position.It is beneficial to strengthen stirring ability of vanadium extraction molten pool and promote vanadium extraction reaction,which will provide the theoretical support for the realization of high efficiency vanadium extraction by powder injection in converter.更多还原