Abstract
Обоснование гидродинамической дезинтеграции минеральной составляющей гидросмеси высокоглинистых песков россыпей благородных металлов
Highlights
General regularities and theoretical approaches determining hydroimpulsive effects on the mineral component of the hydraulic fluid are analyzed, with reference to the disintegration of high-clay sands of gold-bearing placers
The Kutum field is located in the Sutar gold-bearing area, in the zone of the right-bank inflow of the River
The aim of the research is to develop an approach to the substantiation of the disintegration process of highclay sand under the conditions of changing the pressure of the flow, with the formation of vortices, shock waves, and dilution of the hydraulic fluid, on the basis of an analysis of the aspects of hydrodynamic phenomena and interactions
Summary
General regularities and theoretical approaches determining hydroimpulsive effects on the mineral component of the hydraulic fluid are analyzed, with reference to the disintegration of high-clay sands of gold-bearing placers. A considerable number of placers discovered in the Amur region are characterized by small gold and an increased content of clay fractions. Analysis of placer fields in the Amur region showed that many of them can be classified as complex for processing because of the significant volume of fine gold (fractions less than 0.5 mm make up more than 90%, and gold sizes less than 0.1 mm – up to 26%). An example is the Kutum field, a sieve analysis of the gold bearing stratum of which showed a 93% of gold content of 0.16-0.63 mm in size (Figure 1) (Khrunina et al, 2011).
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