THE POSSIBILITY OF THE THERMOMECHANICAL ENRICHING PROCESSING OF THE MAGNESIA RAW MATERIALS FOR THE HIGH-QUALITY MAGNESIA PRODUCTION

Abstract

The  possibilities of  the  thermomechanical enriching process are regarded for the magnesia raw materials in order to remove the trace constituents out of Satka's magnesium carbonate. It is shown that the magnesium carbonate burning within 680‒750 °C and its subsequent disintegration (abrasion) at certain mechanical loads allow to raise the MgO content (on oven-dry basis) by 10 % in the fraction smaller than0,5 millimeters. It is determined that in the course of magnesium carbonate  fixed-bed burning the dust entrainment is the lowest and doesn't exceed 1,5 % when the layer thickness increases by factor of 10 (from 20 to200 millimeters).