The theory of gravity classification processes is usually based on the regularities of the behavior of isolated particles in a flow. This approach has been justly criticized since long ago, since it is impossible to interpret the phenomena observed in actual processes (incomplete separation, affinity of curves, products contamination, etc.) from this standpoint. Only after providing an insight into the phenomenon of equal extractability of various size particles, have we managed to reveal the connection between the regularities of the behavior of an isolated particle and actual mass separation in a flow.
