Abstract
To afford mathematical tools for expression operations under variable pressure-variable rate and constant rate conditions, expression processes are analysed in view of the flow through compressible porous media.
From the previous paper17), it is evident that the expression mechanism of slurry consists of two flow phenomena. These types of phenomena during the variable-pressure expression process may be analysed by consideration of the flow mechanisms throug hcompressibe porous beds, first by the filtration theory and second by the so-called consolidation theory. It has been demonstrated that the operational variables for variable-pressure expression operations are well predicted from calculations based upon compression permeability cell data. For both the original mixtures of slurry and saturated semi-solid, a favorable coincidence between theories and experiments are assured under constant rate and variable pressure-variable rate conditions.
