Abstract：Blending is an important index to evaluate the metallurgical effect of the ladle bottom argon blowing refining，and the optimization of bottom blowing argon process to promote the mixing is the core research content of ladle refining. The double orifice symmetric alternating bottom blowing was first put forward to enhance the stirring intensity and promote the blending. Using the water model with the geometric similarity ratio 1∶4 was used to study the the alternating blowing position 0.1R-0.5R and alternating blowing time 0-15 s for 150 t ladle on the condition of the blowing gas of 300 L/min. The experimental results showed that with the increase of alternate blowing time，the mixing time increased firstly and then decreased. With the increase of the distance between the bottom blowing hole and the ladle center，the mixing time decreased firstly and then increased，and with the distance of 0.3R，the mixing time was the shortest. When the alternate blowing time was 15 s，the mixing time was the shortest and 5.8% less than that without alternate blowing.
2017, Vol. 27 
