Institute of Mineral Resources (Tashkent, Respublik of Uzbekistan)
M. U. Isokov, Doctor of Geological and Mineralogical Sciences, Director, m.isoqov@uzgeouniver.uz
B. N. Khamidullaev, PhD in Technical Sciences, Head of the Almalyk Experimental Center for Geoinnovation Technologies, baxrom_0786@mail.ru
I. S. Nurmukhamedov, Head of the Laboratory, nurmuhamedov85@list.ru
S. Y. Samandarova, Head of the Laboratory, sshoxida90@gmail.com

The objective of this work is to study the material composition of refractory gold-bearing ore, based on the results of which possible methods will be assessed and recommendations will be given for selecting the necessary process solutions. The object of research in this work was a process sample of carbonaceous gold-bearing ore of the Amantaytau deposit (Central Kyzylkum, Uzbekistan). Chemical, granulometric and phase analyzes, as well as a mineralogical study using modern optical and electronic methods were carried out. Phase analysis established that a significant part (56.12 %) of gold is in a refractory form associated with sulfide minerals and carbonaceous components. The revealed textural and structural features and distribution of gold confirm the complex nature of the ore and the need to use combined process flowsheets. The results of laboratory tests showed low efficiency of the gravity method, which is due to the fine dissemination of gold. For further processing, the expediency of using fine grinding, flotation enrichment with subsequent pyrometallurgical or hydrometallurgical processing of concentrates is substantiated. 

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