In axial flow conveyor centrifuges, the critical separation occurs
a). when particle reaches to the interface between the thin boundary layer and stagnant liquid pond
b) when particle is in stagnant liquid pond. c) when particle crosses stagnant liquid pond and touches the bowl wall
d) none of the above.
Critical behavior can be obtained in the liquid phase. Both upper and lower critical temperatures can occur in the centrifugal system"."