Published on 25 April 2020
In the supply-demand chain, small deposits (ore deposits with balance reserves of up to 10 tons of gold and placer deposits with reserves of up to 0.5 tons) are the least popular among subsoil users. The reason for the low development of low-volume reserves is that individual exploitation of such geo-resources is low-cost and even unprofitable. Low profitability of involving low-volume stocks in economic turnover is associated with a small volume of products produced, which is not sufficient for recouping the costs of its production.
The solution of the problem of involving technogenic gold-containing resources in economic turnover with obtaining an economic effect will allow increasing the amount of metal delivered to GOKHRAN by 20-30 tons annually for 10-20 years. The existing ready-made infrastructure and preliminary data on gold reserves increase the investment attractiveness of these objects. At the same time, when processing ores of indigenous gold deposits, the main losses of metal with dump tails are associated with its "physically" persistent morph type - small and thin gold which is an urgent task to reduce.
The organizational mechanism for the development of unprofitable objects is to combine into a group for joint processing of deposits with small reserves, for example, man-made placers of gold with available ore reserves of gold. The technology of ores enrichment and gold placers consists in the separation of a gold-containing product from technogenic raw materials by gravitational methods of enrichment at mobile complexes which is further processed using the technology of an existing stationary ore extraction factory.
The use of concentrate gold as a carrier mineral makes it possible to extract 92.63% of gold from the raw material against 87.36 % for individual processing of ores. In this case, the yield of the concentrate directed to cyanidation is reduced from 6.14 to 4.777 %. The reduction in the number cyanided concentrate reduces the operating cost by saving chemical reagents required in the cyanidation of concentrates and disposal of tailings.
Tags: флотация, гравитация, руда, золото, совместная переработка, россыпь, экономический эффект.
ISSN 1998-4502 (Print) ISSN 2499-975Х (Online)