The Reasons for the Necessity to Correct Some Part of Gravitional Enrichement Theory

Abstract

The general outline of chosen problems concerning the theoretical presentation of the phenomena occurring in hard coal beneficiation
in jigs on the basis up to date state of papers related to partition curve and grains disperion is presented. In the following part are
presented the details of critical analysis of widely accepted without reservations papers, which in not correct manner theoreticly explaines
the particle dispersion of material being beneficiated in the jig. Special attention was paid to omitted, up to now, limits of grain
dissipation possibility, forming the density diversified layers and effects of skipping these details for appropriate theoretical explanation
of the phenomena that occurs during the jig operation and in appraisal of this process.