THEORETICAL ANALYSIS OF HYDRODYNAMIC PARAMETERS OF PARTICLE MOVEMENT IN CENTRIFUGAL DENSE-MEDIA SEPARATION UNIT

Abstract

A short description of centrifugal dense-media separation unit with two-layered isolation medium designed for improvement in the quality of gravity concentrates is given in dressing crude ore of color, rare, and precious metals; its basic diagram is shown. The solution of differential equations describing the separated particle movement in the working area is considered. As a result, analytical expressions of the most important hydrodynamic parameters of easy and heavy particle movement, i.e. their radial and longitudinal speeds necessary for correct calculations of the basic constructive elements of the separation unit, are obtained. The tests of a laboratory model of the device on artificial mixtures of quartz and galena have shown that the mutual contamination of separation products does not exceed 5 %.