STUDY OF METHODS OF PROCESSING GOLD-BEARING ORE OF THE DELKEN DEPOSIT

Abstract

The research material is gold-bearing ores of the Delken
deposit. A feature of the ore of the Delken deposit is the
presence of coarse gold and dispersed gold as well as,
presumably encapsulated, cluster gold in quartz. The
article presents results of research on methods of ore
processing in order to recover precious metals. The content of organic carbon in the ore is 0.13-0.18 percent.
Gravity concentration schemes in combination with flotation and hydrometallurgical methods enable the study
of gold-bearing ores containing coarse gold. As a result,
we obtained low rates of gold recovery (18 to 49.5 percent) to gravity concentrate. Flotation tests occur as
ineffective for these types of ores as a previous stage
before cyanidation. Gold was distributed between flotation products and was not concentrated. Hydrometallurgical studies are carried out using three modes of leaching with cyanide solutions: 1) vat cyanide leaching, 2) activated cyanide leaching with mechanical activation, 3) activated vat cyanide leaching and two-stage sorption with resin. Gold recovery rates range from 85.65 to 89.82 percent. Activated cyanide leaching with two-stage resin sorption is most effective compared to other recovery schemes. A number of factors that complicate hydrometallurgical processing characterizes the goldbearing ore of the Delken deposit: it contains finely dispersed gold and impurities that increase the consumption of cyanide. The ore of the Delken deposit contains organic carbon as well as quartz; it results in increased pregrobbing