Numerical simulation of effect of swirling ladle shroud on collision and coalescence of inclusions
LIU Zhiyuan，LUO Zhiguo，GU Yingjie，ZOU Zongshu
School of Metallurgy, Key Laboratory of Ecological Metallurgy Multimetallic Mineral (Ministry of Education), Northeastern University， Liaoning 110819, Shenyang, China
Abstract：Abstract： Comparing with the traditional ladle shroud, the structure of ladle shroud was changed to realize the rotation of liquid steel, and the effect of liquid steel rotation on collision and coalescence of inclusions was studied. Using ANSYS software and some simulation conditions, the PBM model was used to simulate the collision and coalescence of inclusions when the liquid steel rotates in the swirling ladle shroud, and the optimal parameters combination scheme for collision and coalescence of inclusions was obtained by orthogonal test. The results show that the spiral swirl guiding device is installed in the ladle shroud to make the liquid steel rotate, which is conductive to the collision and coalescence of inclusions. Under the same operating conditions, the average diameter of inclusions increases from 3.90μm to 4.08μm when using the traditional ladle shroud, while the average diameter of inclusions increases from 3.90μm to 4.21μm when using the swirling ladle shroud of 2 guide rails and rotated 6 circles respectively, the increase rate of inclusion average diameter was the largest. The use of swirling ladle shroud increases the collision probability of inclusions, promotes the coalescence and growth of inclusions, which is beneficial to improve the removal rate of inclusions and the cleanliness of liquid steel.
刘志远，罗志国，顾英杰，邹宗树. 旋流钢包长水口对夹杂物碰撞聚合影响的数值模拟[J]. 钢铁研究学报, 2021, 33(5): 408-417.
LIU Zhiyuan，LUO Zhiguo，GU Yingjie，ZOU Zongshu. Numerical simulation of effect of swirling ladle shroud on collision and coalescence of inclusions. JOURNAL OF IRON AND STEEL RESEARCH , 2021, 33(5): 408-417.
2021, Vol. 33 
