The prediction of slurry viscosity for the suspensions with and without par
ticle size distribution has become possible by using the suspension theolog
y model proposed in this study. The viscosity prediction model is based on
Simha's cell model, which is applicable to completely dispersed systems. It
was verified experimentally that the Simha's model was able to predict the
slurry viscosity for the case of the suspensions with particle size distri
bution. The present suspension theology model adopted the assumption that t
he effect of agglomeration appeared only for the cluster formation with the
minimum sized particles, and the other larger particles were completely di
spersed. The same type of theology model was previously proposed by one of
the present authors, but the model was modified to give more accurate visco
sity predictions. The present model makes the assumption that multi-breakup
of inter-particle bonding occurs when a cluster breaks into two parts unde
r a simple shear flow. It is demonstrated that the present model combined w
ith the Simha's cell model can be successfully used to predict the theologi
cal behavior of slurries. (C) 2001 Elsevier Science Ltd. All rights reserve
d.