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A Micro-Scale Investigation of the Adsorption of Collectors on Bastnaesite

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A Correction to this article was published on 29 August 2019

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Abstract

A micro-scale investigation was carried out by applying atomic force microscopy (AFM) 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 comes into contact with the solutions of the collectors, suggesting that all these collectors can effectively adsorb onto bastnaesite. Increasing temperature can facilitate the adsorption of oleic acid onto bastnaesite. Results from attenuated total reflectance–Fourier transform infrared spectrometry (ATR-FTIR) also show that all of these collectors adsorb strongly onto bastnaesite, with strong absorbance spectra being detected. The ATR-FTIR results confirm those obtained by AFM. In general, hydroxamic acid collectors (HA and SHA) adsorb onto 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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Change history

  • 29 August 2019

    In the original publication of this article Fig. 7 was duplicated as Fig. 8. The original article has been corrected and Fig. 8 is now correct.

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Acknowledgements

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. 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.

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Authors and Affiliations

  1. Department of Mining and Geological Engineering, The University of Arizona, 1235 E. James E. Rogers Way, Tucson, AZ, 85721, USA

    Jinhong Zhang & Dongbo An

  2. ATS-MER, LLC, Tucson, AZ, USA

    James Withers

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  1. Jinhong Zhang
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  2. Dongbo An
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  3. James Withers
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Correspondence to Jinhong Zhang.

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The original version of this article was revised to replace Figure 8 with the correct image.

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Zhang, J., An, D. & Withers, J. A Micro-Scale Investigation of the Adsorption of Collectors on Bastnaesite. Mining, Metallurgy & Exploration 36, 957–966 (2019). https://doi.org/10.1007/s42461-019-00118-3

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  • DOI: https://doi.org/10.1007/s42461-019-00118-3

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