Abstract:Based on analysis of heat transfer processes in alumina rotary kiln, flow and heat transfer processes of particles were simulated on cross section in rotary kiln with application of multiphase flow theory. Temperature and flow distributions were investigated on cross section under different parameters. The results show that temperature distribution of particles is mainly affected by heat transfer processes occuring in gas and inner wall of kiln. The smaller particle diameter is, the faster internal temperature rises, and the lower height of particle under flow influence is. Temperature distribution inside the particles tends to be uniform. The temperature difference can be ignored and the internal temperature of particles can be considered uniform.