Solid-liquid suspension characteristics of stirred pulp-mixing mechanism

By solid-liquid two-phase experiments,the practical pulp-mixing process was simulated.Basing on the materiel distribution regularity in tank under the effects of different stirred mechanism,the parameters and concepts of cumulative concentration variance,interval concentration variance,just-suspended capacity and effective range were summarized to characterize the suspension characteristics of materiel,with which systematic analysis on the effect of typical axial flow field and radial flow field's role in two-phase medium was made,while the effect of the addition of common accessories was summarized.It is pointed out that material suspension is a process decided by just-suspended capacity and effect range.Under the same operation condition,suspension capacity of stirred system is decided by just-suspended capacity when the suspension level is low,while effect range gradually becomes dominant when good just-suspended status has been achieved.