Russian Journal of Non-Ferrous Metals

, Volume 60, Issue 2, pp 107–117 | Cite as

Effect of Clay Slime on the Froth Stability and Flotation Performance of Bastnaesite with Different Particle Sizes

  • J. Ran
  • X. QiuEmail author
  • Z. Hu
  • Q. Liu
  • B. Song
  • Y. Yao


To investigate the effect of kaolin particles on the flotation performance and froth stability of different particle sizes of bastnaesite, batch flotation tests and froth stability experiments were performed. The results demonstrated that poor froth stability of the coarse particle size bastnaesite led to poor flotation recovery. The medium particle size led to appropriate froth stability and also improved the recovery of bastnaesite. The fine particle size yielded an excessively stable froth, yet did not increase the adherence of bastnaesite particles to the bubbles, but it may have increased the entrainment of kaolin. A longer flotation time may have contributed to improving the recovery of the fine size fraction bastnaesite due to its greater flotation rate. Yet, it had little impact on the recovery of the coarse-grained bastnaesite. In addition, a low proportion (20%) of kaolin improved the recovery and flotation rate of the coarse size fraction bastnaesite. In general, however, the presence of kaolin was detrimental to the flotation performance of bastnaesite. Moreover, the presence of kaolin increased the froth stability of the bastnaesite and resulted in more hydrophilic kaolin particles being entrained into the concentrate products.


froth stability, kaolin bastnaesite, recovery, particle size 



The authors would like to acknowledge the financial support provided by Sichuan Key Technologies R&D Program of China (no. 15ZC1801) and High-end Leader Talent Cultivation Special Funded Project of Guangdong Academy of Sciences (no. 2017GDASCX-0301).


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Copyright information

© Allerton Press, Inc. 2019

Authors and Affiliations

  • J. Ran
    • 1
    • 2
  • X. Qiu
    • 1
    • 2
    Email author
  • Z. Hu
    • 1
    • 2
  • Q. Liu
    • 1
    • 2
  • B. Song
    • 1
    • 2
  • Y. Yao
    • 1
    • 2
  1. 1.State Key Laboratory of Complex Non-ferrous Metal Resources Clean Utilization, Kunming University of Science and TechnologyKunmingChina
  2. 2.Guangdong Institute of Resources Comprehensive Utilization, State Key Laboratory of Rare Metals Separation and Comprehensive Utilization, Guangdong Provincial Key Laboratory of Development and Comprehensive Utilization of Mineral ResourceGuangzhouChina

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