Improving processes of gold-silver refractory ores treatment at the complex deposit of precious metals

The paper considers the results obtained in the study of the prospective gold-silver complex deposit at the Eriksky ore cluster (Khabarovsk Territory) with refractory pofycomponent ores. Energy dispersive, atomic emission, grain size and dispersive analysis of rock samples were carried out. Samples contained microelements of a wide range including gold, silver, bismuth, cobalt, chromium, manganese, molybdenum, nickel, lead, vanadium, tungsten, zinc, copper, etc. It was found that pofycomponent and dispersed composition of mineral raw materials at the deposit defines it as a complex object to extract valuable components. It was proposed to use systems based on methods that reduce consumption of reagents to address the issue of precious metal extraction with more environmentally and technologically efficient tools. It is achieved by creating conditions for a sustainable process of preparation for leaching of mineral components containing gold and platinum through destruction of the mineral component of refractory polycomponent ores by increasing micro disintegration fields using ultrasound. Providing sustainability of mineral crystal lattice destruction by regrinding the solid phase formed during cavitation is a fundamental factor when preparing for the extraction of microparticles of valuable components.