| In order to optimize the structure and process parameters of the rotary sieve classifier and improve the screening capacity and screening efficiency of the combined cleaning screen, the discrete element software EDEM was used to simulate the rotary screening process of the combined cleaning screen. The movement pattern of particles in the screening process was explored, and the effects of the radius of rotation, the rotation speed and the inclination angle of the screen surface on the screening capacity and screening efficiency of the combined cleaning screen were simulately analyzed. The results showed that increasing the radius of rotation, rotation speed and inclination angle of the screen surface could increase the screening capacity of the combined cleaning screen, but reduced the screening efficiency (material extraction rate and impurity removal rate). When the rotary speed was about 420 r/min, the radius of rotation was about 20 mm, and the inclination angle of the screen surface was 7°-9°, the screening efficiency of the combined cleaning screen was better, and the screening capacity was also larger. |
