ABSTRACT
The mixing of non-Newtonian materials such as pastes, plastics, resins, and so on, involves factors distinctly different from those involved in the mixing of Newtonian fluids. Irrespective of the individual ingredients comprising a non-Newtonian material, the objective of mixing is to decrease the concentration gradient to a desired minimum. The mixing of non-Newtonian materials is basically carried out by different mechanical devices which both combine ingredients and provide intensive agitation. Common devices used are sigma-blade mixers, Banbury mixers, roller mills, anchor agitators, centrifugal disk-type mixers, and others. Blade mixers are used to promote kneading and mixing action accompanied with heating or cooling of different deformable or plastic solids and high consistency pastes. Parametric calculations for mixing rolls make it possible to estimate the basic parameters of the machine, namely, its productivity, and the thrust forces between rolls, torque, and horsepower.
