Abstract
The following problems in disc type spheronizer were confirmed through a dynamic analysis for the motion of circulating material with centrifugal, upward and cascading fluxes.
1) Authenticity of the public opinions on the three-dimensional circulation of material premising the outlook of hold up like an annular twisted rope, and the eddy motion flux at longitudinal section of hold up.
2) Correspondence of the analytical result with the experiential recognition concerning the scale up method.
