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THE EFFECT OF TEMPERATURE ON THE DURATION OF THE PROCESS OF BIOCHEMICAL LEACHING METHOD

Ashimkhan Kanayev

First published: 2018-06-20https://doi.org/10.5593/sgem2018/1.4/s04.024View metrics

Abstract

The temperature makes considerable impact on gold-bearing minerals decomposition. So, by the Russian scientists on an example of May deposit concentrate it has been shown that the increase in temperature of a pulp to 34 - 36В°? intensifies oxidation of gold-bearing mineral - arsenopyrite: after the lapse of 48 hours oxidation degree arsenopyrite reached 95%. On the basis of studying kinetics biooxidation of sulphidic minerals by microorganisms association at various temperature modes in some research institutes of Russian Academy of Sciences has been developed two stage biooxidation technologies by microorganisms association, including moderate-thermophilic bacteria, with flexible regulation of a temperature mode. Also the temperature influences association structure. At temperature from 28?? to 40?? the active association of microorganisms consisting from strains of four bacteria strains - Acidithiobacillus, Leptospirillum, Ferroplasma and Sulfobacillus is formed. At temperature 45?? - the association of microorganisms including strains of two bacteria strains - Ferroplasma and Sulfobacillus. At temperature from above 45?? - only strains of moderate - thermophilic and thermophilic bacteria [1-7].

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Publication details

Title
THE EFFECT OF TEMPERATURE ON THE DURATION OF THE PROCESS OF BIOCHEMICAL LEACHING METHOD
Authors
Ashimkhan Kanayev
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Science and Technologies in Geology, Exploration and Mining
Publisher
STEF92 Technology
Year
2018
Pages
179-186
SWS Citekey
Kanayev20184179186
ISSN
1314-2704
ISBN
978-619-7408-38-6
Language
en
Publication type
Conference Paper
Proceedings contents
Open official contents
Keywords
associationchemolithotrophicmicroorganismsleachingnoble metals
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