The beads-forming furnace of solid state powder method for glass sphere producing was simulated by utilizing the commercial FLUENT software to investigate the flow field and temperature distribution in the furnace. The trajectories and temperature evolution of particles with different diameters were simulated by using the discrete phase model. It is found that the heating of particles mainly depends on the convective heat transfer with the flame. Finally, the degree of particle spheroidization was characterized by spheroidizing index. And the distributions of spheroidizing index were analyzed for particles with different diameters. According to the results, the spheroidizing index of the particle is found to be decreased with the increasing of particle diameter, which is due to the decreasing of following behaviors and the increasing of the thermal inertia.
寿 彭;Shuyong Chen;Yun Wang;Cheng Peng;Mingjiu Li;Xiaobo Peng
Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society