FEATURES OF COMPOSITION AND PROCESSING OF REFRACTORY GOLD-BEARING ORES OF THE AKTOBE DEPOSIT

Аннотация

This article presents the results of studies on the processing of refractory gold-bearing ores from the Aktobe deposit (Zhambyl region, Kazakhstan). The research included chemical and mineralogical characterization, analysis of gold and silver occurrence, and evaluation of physical and mechanical properties. The average gold content was 1.55–1.6 g/t and silver 42–43 g/t. The ore is mainly composed of quartz (up to 79%) and pyrite (up to 10%). Phase analysis revealed that only 46.47% of gold occurs in free form, confirming the refractory nature of the ore. Gravity concentration tests demonstrated the effectiveness of centrifugal separation, achieving up to 35.93% gold recovery with 28.74% of the metal in the concentrate. The findings emphasize the necessity of combined processing technologies. Future research will focus on hydrometallurgical methods, including cyanidation, mechanical activation, and cavitation, to improve recovery and develop optimal flowsheets.