Imperial College London
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Emeritus ProfessorJohnMonhemius

Faculty of Engineering, Department of Earth Science & Engineering

Senior Research Fellow
 
 
 
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Contact

 

j.monhemius

 
 
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Location

 

Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Monhemius:2017,
author = {Monhemius, AJ and Hedjazi, F and Saeedi, Ali H},
publisher = {Canadian Institute of Mining, Metallurgy and Petroleum},
title = {Flotation and leaching at Anglo Asian mining’s Gedabek gold and copper mine in Azerbaijan},
url = {http://hdl.handle.net/10044/1/56666},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - Anglo Asian Mining’s Gedabek mine is situated in the Lesser Caucasus mountains in Western Azerbaijan.  The ore body is a complex copper-gold porphyry deposit, comprising intermixed oxidized, transition and sulphidic gold and copper-bearing ores. Gold in the sulphide ores is generally not refractory and is recoverable by cyanide leaching, but the secondary copper minerals, which are also cyanide soluble, lead to high cyanide consumptions.  Ore processing at Gedabek is by agitation leaching for high grade ore (>1g Au/t) and heap leaching for lower grade ore.  In order to cope with the high copper concentrations in the cyanide leach liquors, a unique combination of resin-in-pulp for selective gold extraction and SART processing for copper removal and cyanide recovery is used.  In 2015, a flotation plant was added to treat the tailings from the agitation leach plant before the tails are sent to the tailings dam.  This plant produces a copper sulphide flotation concentrate and also recovers some of the residual gold and silver in the tailings. Since February 2017, due to lower grades of gold and higher copper in the feed ore, the decision was taken to alter the flow sheet and to carry out flotation ahead of agitation leaching, to reduce the cyanide consumption during leaching by removing soluble copper minerals.  The paper compares and contrasts the performance of the plant in the two configurations, namely, (i) leaching followed by flotation and (ii) flotation followed by leaching.
AU  - Monhemius,AJ
AU  - Hedjazi,F
AU  - Saeedi,Ali H
PB  - Canadian Institute of Mining, Metallurgy and Petroleum
PY  - 2017///
TI  - Flotation and leaching at Anglo Asian mining’s Gedabek gold and copper mine in Azerbaijan
UR  - http://hdl.handle.net/10044/1/56666
ER  -
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