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{Mackay:2018:10.1016/j.mineng.2018.05.005,
author = {Mackay, I and Mendez, E and Molina, I and Videla, AR and Cilliers, JJ and Brito, Parada PR},
doi = {10.1016/j.mineng.2018.05.005},
journal = {Minerals Engineering},
pages = {103--107},
title = {Dynamic froth stability of copper flotation tailings},
url = {http://dx.doi.org/10.1016/j.mineng.2018.05.005},
volume = {124},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - In this work, dynamic froth stability is used for the first time to investigate the flotation behaviour of copper tailings. Reprocessing of material from tailings dams is not only environmentally desirable, but also increasingly economically feasible as head grades can be high compared to new deposits. Flotation tailings, however, usually contain a large proportion of fine (10–50m) and ultra fine (<) material and the effect of these particle sizes on froth stability is not yet fully understood.For this study, samples were obtained from the overflow and underflow streams of the primary hydrocyclone at a concentrator that reprocesses copper flotation tailings. These samples were combined in different ratios to assess the dynamic froth stabilities at a wide range of particle size distributions and superficial gas velocities. The findings have shown that the effect of particle size on dynamic froth stability can be more complex than previously thought, with a local maximum in dynamic froth stability found at each air rate. Moreover, batch tests suggest that a local maximum in stability can be linked to improvements in flotation performance. Thus this work demonstrates that the dynamic froth stability can be used to find an optimum particle size distribution required to enhance flotation. This also has important implications for the reprocessing of copper tailings as it could inform the selection of the cut size for the hydrocyclones.
AU  - Mackay,I
AU  - Mendez,E
AU  - Molina,I
AU  - Videla,AR
AU  - Cilliers,JJ
AU  - Brito,Parada PR
DO  - 10.1016/j.mineng.2018.05.005
EP  - 107
PY  - 2018///
SN  - 0892-6875
SP  - 103
TI  - Dynamic froth stability of copper flotation tailings
T2  - Minerals Engineering
UR  - http://dx.doi.org/10.1016/j.mineng.2018.05.005
UR  - http://hdl.handle.net/10044/1/59838
VL  - 124
ER  -
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