铁水KR法机械搅拌脱硫过程铁水流动的水模型研究

Investigation on the fluid flow of the hot metal during KR desulfurization process using water modeling

利用水模型研究了KR法铁水脱硫过程铁水的流动现象,利用粒子图像测速(PIV)技术研究了搅拌桨转速和浸入深度对铁水包内平均速度场和湍动能的影响。铁水包内的流场是典型上下双环流。随着搅拌桨转速从110 r/min增加到210 r/min,铁水包内速度和湍动能空间分布特征没有发生明显的变化,但是最大速度从0.15 m/s增加到0.3 m/s,湍动能从0.01 m^2/s^2增加到0.035 m^2/s^2。随着搅拌桨浸入深度的改变,速度和湍动能的空间分布发生了明显的变化,但是速度和湍动能的大小没有发生明显变化。

The fluid flow phenomena of the hot metal during KR mechanical stirring desulfurization process was investigated using water model.The effect of the rotation speed and the immersion depth of the impeller on the velocity and turbulent kinetic energy in the ladle was discussed using a particle image velocimetry(PIV).The flow pattern in the KR ladle was a typical double-roll flow.When the rotation speed of the impeller increased from 110 r/min to 210 r/min,the spatial distribution of the velocity and turbulent kinetic energy changed little while the maximum velocity increased from 0.15 m/s to 0.3 m/s,and the turbulent kinetic energy increased from 0.01 m^2/s^2 to 0.035 m^2/s^2.When the immersion depth of the impeller varied,the spatial distribution of the velocity and turbulent kinetic energy changed significantly while the magnititude varied little.