TY - GEN
T1 - A study of the adsorption of collectors on bastnaesite
AU - Zhang, J.
AU - An, D.
AU - Withers, J.
N1 - Funding Information:
J. Zhang is grateful to Freeport-McMoRan Copper & Gold, Inc. for sponsoring the Freeport McMoRan Copper and Gold Chair in Mineral Processing in the MGE department at the University of Arizona. The financial support from a DoD Office of Navy Research grant with the contract number N00014-15-C-0165 for this study is greatly appreciated.
Publisher Copyright:
Copyright © 2019 by SME.
PY - 2019
Y1 - 2019
N2 - A nano-scale investigation has been carried out by applying an AFM (atomic force microscope) to study in situ the adsorption of various collectors, i.e., oleic acid, octanohydroxamic acid (HA), and salicylhydroxamic acid (SHA), on bastnaesite in aqueous solutions. The obtained AFM images show that the surface morphology of bastnaesite changes greatly after it contacts the solutions of the collectors, suggesting that all these collectors can effectively adsorb on bastnaesite. Increasing temperature can help increase the adsorption of oleic acid on bastnaesite. FTIR (Fourier transform infrared) results also show that all these collectors adsorb strongly on bastnaesite with a strong absorbance spectra being detected, which confirms with the results obtained with AFM imaging analysis. In general, hydroxamic acid collector (HA and SHA) adsorbs on bastnaesite mainly in the form of insoluble metal hydroxamate. This specific adsorption mechanism explains that a high selectivity with a moderate collectivity will be achieved with a hydroxamic acid collector for the flotation of bastnaesite.
AB - A nano-scale investigation has been carried out by applying an AFM (atomic force microscope) to study in situ the adsorption of various collectors, i.e., oleic acid, octanohydroxamic acid (HA), and salicylhydroxamic acid (SHA), on bastnaesite in aqueous solutions. The obtained AFM images show that the surface morphology of bastnaesite changes greatly after it contacts the solutions of the collectors, suggesting that all these collectors can effectively adsorb on bastnaesite. Increasing temperature can help increase the adsorption of oleic acid on bastnaesite. FTIR (Fourier transform infrared) results also show that all these collectors adsorb strongly on bastnaesite with a strong absorbance spectra being detected, which confirms with the results obtained with AFM imaging analysis. In general, hydroxamic acid collector (HA and SHA) adsorbs on bastnaesite mainly in the form of insoluble metal hydroxamate. This specific adsorption mechanism explains that a high selectivity with a moderate collectivity will be achieved with a hydroxamic acid collector for the flotation of bastnaesite.
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M3 - Conference contribution
T3 - 2019 SME Annual Conference and Expo and CMA 121st National Western Mining Conference
BT - 2019 SME Annual Conference and Expo and CMA 121st National Western Mining Conference
PB - Society for Mining, Metallurgy and Exploration
T2 - 2019 SME Annual Conference and Expo and CMA 121st National Western Mining Conference
Y2 - 24 February 2019 through 27 February 2019
ER -