超声波钢包精炼水力学模型实验研究

Experimental Study on Hydraulic Model of Ladle Refining with Ultrasonic Wave

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 hydraulic model experiment to improve the effect of stirring in the molten bath which was taken on 180 t ladle of some steel factory as prototype was carried out using ultrasonic wave generator.The influential factors were studied including ultrasonic power,depth of wave origin and lateral attitude position of wave source.The mixing effect with ultrasonic was compared with that of stirring with air.The results showed that when the power was greater than 1000 W,the mixing time was shorten with the power increasing,the central position was best considering the lateral attitude position.The optimal position of wave source was at a high level of 2/3 depth of liquid in the ladle.Under the experimental conditions the least mixing time with ultrasonic assistance was 35 s,which was less than that with air stirring from the bottom.So the mixing time could be shorten obviously and the dynamic condition of ladle refining was improved greatly.