Choosing mineral flotation collectors from large nanoparticle libraries

Choosing mineral flotation collectors from large nanoparticle libraries Journal of Colloid and Interface Science 516 (2018) 423–430 Contents lists available at ScienceDirect Journal of Colloid and Interface Science journal homepage: www.elsevier.com/locate/jcis Regular Article Choosing mineral flotation collectors from large nanoparticle libraries Carla Abarca, M. Monsur Ali, Robert H. Pelton Department of Chemical Engineering, McMaster University, Hamilton, Ontario L8S4L8, Canada graphical a bstract article i nfo abstract Article history: Polystyrene nanoparticles can promote froth flotation of mineral particles if the nanoparticles are suffi- Received 5 November 2017 ciently hydrophobic and are colloidally stable in the high ionic strength solutions typical of commercial Revised 21 January 2018 flotation operations. A library of 80 unique polystyrene nanoparticle types was prepared with click chem- Accepted 22 January 2018 istry and used to determine if particles that were sufficiently hydrophilic to be colloidally stable in high Available online 6 February 2018 ionic strength and high pH solutions, were also capable of promoting flotation. The conflicting require- ments of colloidal stability and hydrophobicity can be achieved in 9 mM sodium carbonate, a very chal- Keywords: lenging environment. Instead of testing all 80 samples with laborious flotation testing, automated assays Nanoparticle flotation collectors measuring colloid stability and nanoparticle hydrophobicity were employed. The colloid stability http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Colloid and Interface Science Elsevier

Choosing mineral flotation collectors from large nanoparticle libraries

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Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Inc.
ISSN
0021-9797
eISSN
1095-7103
D.O.I.
10.1016/j.jcis.2018.01.080
Publisher site
See Article on Publisher Site

Abstract

Journal of Colloid and Interface Science 516 (2018) 423–430 Contents lists available at ScienceDirect Journal of Colloid and Interface Science journal homepage: www.elsevier.com/locate/jcis Regular Article Choosing mineral flotation collectors from large nanoparticle libraries Carla Abarca, M. Monsur Ali, Robert H. Pelton Department of Chemical Engineering, McMaster University, Hamilton, Ontario L8S4L8, Canada graphical a bstract article i nfo abstract Article history: Polystyrene nanoparticles can promote froth flotation of mineral particles if the nanoparticles are suffi- Received 5 November 2017 ciently hydrophobic and are colloidally stable in the high ionic strength solutions typical of commercial Revised 21 January 2018 flotation operations. A library of 80 unique polystyrene nanoparticle types was prepared with click chem- Accepted 22 January 2018 istry and used to determine if particles that were sufficiently hydrophilic to be colloidally stable in high Available online 6 February 2018 ionic strength and high pH solutions, were also capable of promoting flotation. The conflicting require- ments of colloidal stability and hydrophobicity can be achieved in 9 mM sodium carbonate, a very chal- Keywords: lenging environment. Instead of testing all 80 samples with laborious flotation testing, automated assays Nanoparticle flotation collectors measuring colloid stability and nanoparticle hydrophobicity were employed. The colloid stability

Journal

Journal of Colloid and Interface ScienceElsevier

Published: Apr 15, 2018

References

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