Imperial College London
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Professor Jan Cilliers

Faculty of Engineering, Department of Earth Science & Engineering

Chair in Mineral Processing
 
 
 
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Contact

 

+44 (0)20 7594 7360j.j.cilliers

 
 
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Location

 

RSM 1.46BRoyal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Dobson:2017:10.3390/min7050085,
author = {Dobson, KJ and Harrison, STL and Lin, Q and Bhreasail, AN and Fagan-Endres, MA and Neethling, SJ and Lee, PD and Cilliers, JJ},
doi = {10.3390/min7050085},
journal = {Minerals},
title = {Insights into ferric leaching of low grade metal sulfide-containing ores in an unsaturated ore bed using x-ray computed tomography},
url = {http://dx.doi.org/10.3390/min7050085},
volume = {7},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The distribution of the metal-bearing mineral grains within a particulate ore prepared for leaching, and the impact of this spatial heterogeneity on overall extraction efficiency is of key importance to a mining industry that must continuously target ever-reducing grades and more complex ore bodies. If accessibility and recovery of the target minerals is to be improved, a more detailed understanding of the behaviour of the system must be developed. We present an in situ analysis using X-ray computed tomography to quantify the rates of volume reduction of sulfide mineral grains in low grade agglomerated copper bearing ores during a miniature laboratory scale column leaching experiment. The data shows the scale of the heterogeneity in the leaching behaviour, with an overall reduction of sulphide mineral grains of 50%, but that this value masks significant mm3 to cm3 scale variability in reduction. On the scale of individual ore fragments, leaching efficiency ranged from 22% to 99%. We use novel quantitative methods to determine the volume fraction of the sulfide that is accessible to the leachate solution.
AU  - Dobson,KJ
AU  - Harrison,STL
AU  - Lin,Q
AU  - Bhreasail,AN
AU  - Fagan-Endres,MA
AU  - Neethling,SJ
AU  - Lee,PD
AU  - Cilliers,JJ
DO  - 10.3390/min7050085
PY  - 2017///
SN  - 2075-163X
TI  - Insights into ferric leaching of low grade metal sulfide-containing ores in an unsaturated ore bed using x-ray computed tomography
T2  - Minerals
UR  - http://dx.doi.org/10.3390/min7050085
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000404047100021&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/48857
VL  - 7
ER  -
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