IMPROVEMENT OF MILLING SELECTIVITY AND UTILIZATION COMPLETENESS THROUGH RADIATION MODIFICATION OF MINERAL PROPERTIES

摘要

The theoretical and experimental research is aimed to improve pretreatment and concentration of rebellious ore from the Rubtsovsk deposit. Radiation modification of lead-zinc ore properties stimulates milling efficiency and enhances processing efficiency. After radiation modification, percentage of free grains of galenite and wurtzite in milled product increased from 40.7 and 65.7% to 66.4 and 71.5%, respectively, in treatment by accelerated electrons at radiation dose of 5 kGr. As a result, the increment in zinc and lead recovery in rougher flotation concentrate made 4.74 and 9.50%, respectively.