TY - JOUR
T1 - The effect of interparticle cohesion on powder mixing in a ribbon mixer
AU - Halidan, Musha
AU - Chandratilleke, G Rohana
AU - Dong, Kejun J
AU - Yu, Aibing
PY - 2016
Y1 - 2016
N2 - The effect of interparticle cohesion on powder mixing in a ribbon mixer was studied by means of the discrete element method. It is shown that with an increase in the cohesion, the mixing rate and uniformity of mixing deteriorate, the coordination number increases indicating the loss of the ability of particles to be engaged in free flowing motion, and a majority of particles have a stronger tangential velocity allowing bulk angular motion of particles. Conversely, with a decrease in the cohesion, more particles have larger axial velocities, which will increase convective motion in the axial direction. When the cohesion is reduced, the number of particles having large radial stresses increases, and normal stress in the axial direction remains mostly unchanged. The ribbon mixer can mix cohesive particles in a wide range of the Bond numbers without causing large stresses.
AB - The effect of interparticle cohesion on powder mixing in a ribbon mixer was studied by means of the discrete element method. It is shown that with an increase in the cohesion, the mixing rate and uniformity of mixing deteriorate, the coordination number increases indicating the loss of the ability of particles to be engaged in free flowing motion, and a majority of particles have a stronger tangential velocity allowing bulk angular motion of particles. Conversely, with a decrease in the cohesion, more particles have larger axial velocities, which will increase convective motion in the axial direction. When the cohesion is reduced, the number of particles having large radial stresses increases, and normal stress in the axial direction remains mostly unchanged. The ribbon mixer can mix cohesive particles in a wide range of the Bond numbers without causing large stresses.
UR - http://onlinelibrary.wiley.com.ezproxy.lib.monash.edu.au/doi/10.1002/aic.15101/epdf
U2 - 10.1002/aic.15101
DO - 10.1002/aic.15101
M3 - Article
SN - 0001-1541
VL - 62
SP - 1023
EP - 1037
JO - AIChE Journal
JF - AIChE Journal
IS - 4
ER -