#### Discrete element simulation of particle motion in ball mills .

WEBJul 15, 2018 · Due to the large size of a ball mill or a rotary kiln, the number of particles is massive. Therefore, it is difficult to build a DEM model to include all the particles of real size in a mill with real geometry. Fig. 3 shows a ball mills with a radius of m and a length of 1 m. If the particle radius is identical to 20 mm, then the number of ...