1. Secondary Steel-making Plant,Qingdao Iron and Steel Group Co., Ltd., Qingdao 266043, China 2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
Abstract��Based on fractal theory, a new numerical simulation method of colliding-agglomerating growth of fractal Al2O3 agglomerated inclusions was established and applied into smelting a tundish of Al-killed steel in a steel company with Fluent software. The distribution characteristics of Al2O3 inclusions were compared between the new mathematical model and the traditional equal-volume spherical mathematical model. The results indicated that: compared to the traditional equal-volume spherical mathematical model, the value of computation results by the new mathematical model were larger and the distribution of Al2O3 inclusions was more complicated; the new mathematical model showed the inclusions accumulated easily at the inlet and outlet of tundish, which was consistent with the phenomenon of nozzle clogging by Al2O3 inclusions in actual production process; it was difficult to find spherical Al2O3 inclusions in actual production, and most were inclusions in cluster shape with fractal dimensions value about 1.78-1.85, which indicated that this new mathematical model of colliding-agglomerating growth of fractal Al2O3 agglomerated inclusions had certain practical significance.
���巽����ʱ�ɣ���Сΰ���� �꣬�� ҫ. Al2O3��������ײ���۳�����ֵģ���·���[J]. �й������ڿ���, 2015, 33(2): 52-57.
GUO Luo-fang��WANG Shi-song��ZHANG Xiao-wei��LI Hong��WANG Yao. A new numerical simulation method of colliding-agglomerating growth of Al2O3 inclusions. Chinese Journal of Iron and Steel, 2015, 33(2): 52-57.
2015, Vol. 33 
