The dispersion of solid pigments in a liquid medium is described using
the matrix breakage model which was originally developed to represent
particle disintegration processes. The simplest case is treated here,
where there are only two size fractions (agglomerates and single part
icles) but is extended to take into account the influence of the resid
ence time distribution on the overall result of the dispersion. Severa
l different operating modes are considered, going from batch, through
semi-batch, to continuous, and the consequences of these different con
figurations on the overall process are evaluated.