In this study, we employed the Discrete Element Method (DEM) incorporating liquid bridging forces and a coarse-grained model, to analyze the influence of rotation speed on particle behavior within a pan-type pelletizer. We compared simulation results for particle layers in the pan at three different rotation speeds to comprehend their impact. The findings indicate that the average particle velocity increases depending on the degree of coarsening. This phenomenon is attributed to a reduction in the relative collision frequency among particles with an increase in coarsening, leading to a presumed elevation in the overall velocity of coarse particles due to diminished energy attenuation from collisions. Consequently, for future studies with even higher coarsening rates than those in this study, it is suggested to introduce a novel energy attenuation model that considers the relative decrease in collision frequency among particles.
