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{Wang:2020:10.1016/j.mineng.2019.106140,
author = {Wang, P and Reyes, F and Cilliers, J and Brito, Parada PR},
doi = {10.1016/j.mineng.2019.106140},
journal = {Minerals Engineering},
pages = {1--3},
title = {Evaluation of collector performance at the bubble-particle scale},
url = {http://dx.doi.org/10.1016/j.mineng.2019.106140},
volume = {147},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Particle attachment and detachment in froth flotation are complex processes and their measurement presents many challenges. Of particular interest is the effect of collectors at the bubble-particle scale, in order to assess the strength or collecting ability of these reagents. However, studies of the effect of collectors on particle attachment at the bubble-particle scale are scarce. In this work, we propose a methodology to characterise collector strength by measuring the attachment rate of particles to a capillary-pinned bubble. An image processing technique was developed to quantify bubble surface coverage over time, which was then used to determine particle attachment kinetics. The image analysis strategy is based on the sessile drop method and uses curve fitting to determine accurately the particle coverage. The methodology was used to assess the collecting ability of three chalcopyrite collectors. Interestingly, although very similar contact angle measurements were found for two of the collectors, they showed distinctly different particle attachment kinetics. It is proposed that this particle-bubble attachment method can be used to gain additional information not currently available from either contact angle measurements or bulk collector performance tests.
AU  - Wang,P
AU  - Reyes,F
AU  - Cilliers,J
AU  - Brito,Parada PR
DO  - 10.1016/j.mineng.2019.106140
EP  - 3
PY  - 2020///
SN  - 0892-6875
SP  - 1
TI  - Evaluation of collector performance at the bubble-particle scale
T2  - Minerals Engineering
UR  - http://dx.doi.org/10.1016/j.mineng.2019.106140
UR  - https://www.sciencedirect.com/science/article/pii/S0892687519305515?via%3Dihub
UR  - http://hdl.handle.net/10044/1/75394
VL  - 147
ER  -
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