采用完全混合流和活塞流相结合的模型,针对铝脱氧钢研究了中间包流动状况下Al2O3夹杂物的粒度分布情况。对比了带挡墙前后的中间包的流场及夹杂物的去除效果,原中间包中夹杂物的总去除率为19%。而在带挡墙的中间包中,由于夹杂物受到湍流运动和活塞流运动的影响造成其相互碰撞粒度不断长大,夹杂物去除率达到37%,大大优于原中间包。 The particle size distribution of Al2O3 inclusions under the condition of tundish flow was studied for the aluminum deoxidized steel by using the model of complete mixed flow and plug flow. The flow field and inclusion removal were compared between the tundish with and without the retaining wall. The total removal of inclusions in the original tundish was 19%. In the tundish with retaining wall, inclusions are confronted with turbulent motions and plug flow, resulting in the growth of collisions with each other. The inclusions removal rate reaches 37%, which is much better than the original tundish.