| Annotation |
In cyanide gold mining, the development of an efficient scheme is directly linked to a reduction of production renovations duration. Previously published materials on this topic have not been implemented either in training programs (which are reduced almost every year), or in design organizations. In this regard, the use of gold-bearing mineral raw materials in the Russian Federation is extremely irrational, including the lack of specialists’ training. There was a necessity once again to state theoretical bases of a high-speed mode of gold leaching and other semi-precious metals. The probability of dissolution maximum speed has been shown on the example of the reactions research of metals with reagents including formation of complex compounds and autocatalysis. The experimental research of theoretical conclusions in laboratory conditions has been studied by the rotating disc method on the example of copper, bismuth and gold dissolution. The theoretical position on the maximum speed of metals’ dissolution in the isomol system has been confirmed. The use of basic provisions on the maximum dissolution rate of precious and semi-precious metals is also possible under the industrial conditions, which allows to search for ways of improving the technology efficiency. So, the conditions of pilot plant testing of leaching the gold concentrate cyanide in air saturated solutions on the Irgiredmet cones in the joint adventure «Iskra» gold extraction rate has increased from 50-53 % to 94-96 %. In pilot scale trials of heap leaching of gold sample field «Pogrom» the degree of leaching of gold has increased to 82-84 % while the leach cycle has been reduced in 4 times. American scientists have already begun to recognize the effectiveness of cyanide solutions acidification. The materials presented in the article are relevant and can be used in the educational process, in the planning of scientific research and design organizations. |
| References |
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