Improvement of processing of persistent gold-bearing ores

The main geological and industrial types of gold deposits in Kazakhstan are: quartz-vein, stockwork, mineralized zones, complex (copper, pyrite-polymetallic). Exogenous deposits (placers and gold-bearing weathering crusts) account for about 2% of active reserves. 1 when developing a technology for extracting gold from persistent indigenous gold-bearing ores, the technological properties of three ore samples from the stockwork Vasilkovsky Deposit of various sections were studied. All samples are represented by Grano-and gabbrodiorites, subject to varying degrees of mechanical and hydrothermal changes. All three samples can be attributed to quartz-sulfide with poor sulfide mineralization (the content of sulfides is from 5.23% to 6.66%). 2 the Main ore mineral is arsenopyrite, which accounts for 79% to 86% of all sulfide mineralization. The subordinate ratio contains pyrite (10-15%) and small amounts of copper, lead, and zinc sulfides. 3 Gold in ores is represented by fine, fine, associated with both sulfide and rock minerals. The size of the associated gold varies from a few micrometers to 10-20 micrometers.