Abstract: For the problem of large residual steel caused by tall height of the vortex during teeming process of a 100 t ladle，based on the similarity criteria，a physical model with scale of 1︰3 was established, and water modeling experiments were carried out to investigate the influence of resting time, slag stopping balls and the argon blowing on starting and penetrating height of the vortex during ladle teeming. The results show that, when parameters of the ladle are given, both the starting and the penetrating height of the vortex first increase, and then decrease with increasing resting time. The use of a slag stopping balls, whose diameter is 60 mm and groove depth is 8 mm, could almost entirely eliminate the vortex and meet the requirement of the ladle steel flow. With the increase of argon flow, the vortex height decreases, and the starting and penetration height decrease by 58.8 % and 58.6 % respectively when the argon flow reaches 0.8 L/min.

Key words: ladle, height of vortex, resting time, slag stopping balls, argonblowing, physical simulation