, Volume 71, Issue 5, pp 1650–1659 | Cite as

Liquid–Liquid Flow in a Continuous Stirring Settler: CFD-PBM Simulation and Experimental Verification

  • Xu-huan Guo
  • Qiu-yue Zhao
  • Ting-an ZhangEmail author
  • Zi-mu Zhang
  • Shuai Zhu
Computational Approaches for Energy Materials and Processes


Mixer-settlers have been widely employed in the rare earth element separation industry. Presently, reducing the loss of reagents and occupied areas and achieving a highly efficient separation in the settler are challenging issues. In this work, we report numerical simulations of the liquid–liquid flow in a stirring settler and thereafter describe the experimental validation. A computational fluid dynamics coupled population balance model (CFD-PBM) was developed to investigate the liquid–liquid flow characteristics and settling performance. The dispersion band thickness predicted by the turbulent aggregation model was in good agreement with the experimental measurements. The effects of the total liquid flow rate and initial average droplet diameter on the settling characteristics were further investigated. It was found that the dispersion band thickness increased significantly as the droplet diameter decreased. Moreover, this research shows that the CFD-PBM coupled model is promising for designing large-scale stirring settlers.



The authors are grateful for the financial support of the National 863 Plan (2010AA03A405) and the Excellent Talents Cultivation Project of Liaoning Province (2015020591).


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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Xu-huan Guo
    • 1
    • 2
  • Qiu-yue Zhao
    • 1
    • 2
  • Ting-an Zhang
    • 1
    • 2
    Email author
  • Zi-mu Zhang
    • 1
    • 2
  • Shuai Zhu
    • 1
    • 2
  1. 1.Key Laboratory of Ecological Utilization of Multi-metal Intergrown Ores of Ministry of EducationNortheastern UniversityShenyangChina
  2. 2.School of MetallurgyNortheastern UniversityShenyangChina

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