Collect. Czech. Chem. Commun. 1988, 53, 771-787

Description of segregation in a horizontal drum mixer by use of the diffusion equation

Vladimír Kudrnaa and Andrzej Rochowieckib

a Department of Chemical Engineering, Prague Institute of Chemical Technology, 166 28 Prague 6, Czechoslovakia
b Department of Chemical Engineering, Technical University of Szczecin, 71-065 Szczecin, Poland


An attempt has been made to describe the axial segregation of solid particles of two dimensions in a horizontal drum mixer. For this purpose the Kolmogorov's forward diffusion equation with variable diffusion coefficient and zero drift velocity was used. For the case of "pure" segregation this approach has given good results.