DRESSING OF QUARTZ-FELDSPAR ORES ON THE BASIS OF SELECTIVE GRINDING AND MECHANICAL ACTIVATION

摘要

The process of selective disintegration of hypergenically changed sand in ball and centrifugal mills is studied. The possibility is shown for its effective dressing by transforming feldspars into the finer products with quartz concentration in the coarser fractions. It is established that in grinding, the mechanical activation of surface intensifies flotation separation of the minerals mentioned.