Agglomerated particle behavior in a pan-type pelletizer was simulated by Discrete Element Method （DEM） with/without considering adhesive force of liquid bridge, to know the effect on the velocity and trajectory of variously-sized particle in a pan by adhesive force. We selected the liquid bridge model proposed by Israelachvili, because it was quantitatively coincident with experimentally measured force by Willett in wide range of interparticle distance.
Velocity and trajectory of several size of particles were compared with experimental results obtained from image processing using high speed camera and their results were consistent each other only when adhesive force by liquid bridge was considered into the simulation. Especially in the experiment, large particles stuck to the pan around the bottom, raised along the rotation of the pan, and presented a maximum velocity at a fixed height by slide down. These trends could be represented in the simulation only when the liquid bridge force was considered.