About Prospects of Enrichment of Mineral Raw Materials and Chemical Activation of Water Suspensions by Electroexplosive Method

Abstract

A series of experiments is conducted on laboratory and pilot-production installation for the application of high-voltage pulsed discharge in the processes of enrichment of gold-bearing mineral raw materials with a relatively low energy electrical discharge in the pulse of 120 J. At the same time the conglomerates of clay components are breaking down to micron and submicron sizes completely. Solid minerals such as quartz are simultaneously destroyed by defects and grains and withdrawn from the installation with water, thus increasing degree of enrichment of concentrate. The results of the processing by high-voltage pulsed discharges of building sand from the Ob riverbed are given. Discharge energy is 45 J. Relations of fractions in the original sand and in the sand after electroexplosive process show the uniform crushing of sand particles with splitting off particles with size of less than 0.045 mm. A content of chipped particles is 18 %. The results of particle-size and X-ray structural analyses are shown.