Physico-mathematical analysis of the results of the separation of crushed particles into three fractions and the expediency of changing the boundary specific gravity of the separating liquid

Abstract

The developed theory of mineral disclosure makes it possible to calculate all the main parameters of the processing process to obtain products of a given quality, if the technological methods fully realize the effect of a given crushing depth. In fact, the qualitative and quantitative indicators of existing coal enrichment processes differ significantly from the theoretical ones. This is explained by the insufficiently clear separation of particles with similar specific gravity and the impossibility of reliable enrichment of small classes of coal. Therefore, it is important to choose the right demarcation weight, at which the enrichment will be optimal. Most coals, in particular, of the Donetsk basin, are usually enriched in a specific gravity of 1.5, however, in some concentrates the ash and sulfur content remains high...