Estimation of the sieving rate of powders using computer simulation

Computer simulation of sieving behavior of powders was performed to estimat e the sieving rate by the particle element method. The simulated time-resid ue curve of sieving agreed well with the experimental curve. Furthermore, t he simulation can well represent the sieving behavior of cohesive powders. On the basis of the simulation results, the equation to estimate the sievin g rate was proposed. The equation involves three engineering parameters new ly defined in this study. The relationship between the engineering and oper ating parameters in the sieving, such as the vibration amplitude and freque ncy of the sieving surface, is obtained by the simulation. The applicabilit y of the proposed equation is confirmed by experimental sieving of silica s and.