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以某钢厂180t钢包为原型,进行超声波改善钢包精炼搅拌效果的水力学模型实验.考察了超声波功率,波源纵向位置,波源横向位置等对条件均混时间的影响,并对比底吹气体搅拌效果.结果表明,当超声波功率大于1000W时,随功率增加,均混时间缩短;波源纵向位置以液面深度2/3处最佳;波源横向位置以钢包中心位置最佳.实验条件下,超声波搅拌最短均混时间为35s,低于空气搅拌优化均混时间45s.与底吹空气搅拌相比,超声波搅拌可明显缩短均混时间,改善钢包精炼动力学条件.
The 180t ladle prototype in a steel mill was used as a prototype to improve the mixing effect of ladle refining by ultrasonic experiments.The effects of ultrasonic power, longitudinal position of the wave source and lateral position of the wave source on the mixing time were investigated, The results show that when the ultrasonic power is greater than 1000W, the mixing time is shortened with the increase of power, the longitudinal position of the wave source is the best at the depth of 2/3, and the transverse position of the source is the best at the center of the ladle. Under the experimental conditions, The shortest time for homogenization is 35 s, which is lower than that for air agitation, and 45 s for homogenization.Compared with the bottom air agitation, ultrasonic agitation can shorten the mixing time and improve the kinetics of ladle refining.