Collect. Czech. Chem. Commun. 1992, 57, 2100-2112

Stochastic Modelling of Particle Segregation in a Horizontal Drum Mixer

Vladimír Kudrnaa, Pavel Hasalb and Andrzej Rochowieckic

a Department of Chemical Engineering, Prague Institute of Chemical Technology, 166 28 Prague 6, Czechoslovakia
b Institute of Microbiology, Czechoslovak Academy of Sciences, 142 20 Prague 4, Czechoslovakia
c Department of Chemical Engineering, Technical University Szczecin, 71-065 Szczecin, Poland


A process of segregation of two distinct fractions of solid particles in a rotating horizontal drum mixer was described by stochastic model assuming the segregation to be a diffusion process with varying diffusion coefficient. The model is based on description of motion of particles inside the mixer by means of a stochastic differential equation. Results of stochastic modelling were compared to the solution of the corresponding Kolmogorov equation and to results of earlier carried out experiments.