Simulation study on the screening efficiency influence of sieve aperture shape and screen material

The shape of the sieve hole and the material of the sieve have significant influence on the screening efficiency.The optimized screen hole shape design and screen material selection will effectively improve the efficiency of a vibrating screen in the actual industrial scene.In order to study the influence of shape of sieve aperture and screen material on screening efficiency.Based on DEM, using EDEM and complete randomized design, the screening process of sieve aperture shape from square to circular under different screen materials is simulated, and the simulation data are post processed.In this paper, the dynamic screening efficiency is used as the evaluation index, and the influence of factors on screening efficiency is analyzed based on simulation data.The results show that the screen efficiency of square shape is the best, and that of octagon is the lowest.At the same time, the running movement speed of particles on the screen of four different materials under different aperture shapes is experimentally analyzed and compared.The experimental results show that the running speed of mineral particles on the screen is consistent with its screening efficiency under different factors.In summary, the shape of the sieve hole and the material of the sieve will affect the movement speed of mineral particles on the screen, thus affecting the screening efficiency.