Reconstructed rheometer for direct monitoring of dewatering performance and torque in tailings thickening process

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  • Yong Wang
  • Ai xiang Wu, University of Science and Technology Beijing
  • ,
  • Zhu en Ruan, University of Science and Technology Beijing
  • ,
  • Zhi hui Wang, University of Science and Technology Beijing
  • ,
  • Zong su Wei
  • Gang feng Yang, University of Science and Technology Beijing
  • ,
  • Yi ming Wang, University of Science and Technology Beijing

To further clarify the dewatering performance and torque evolution during the tailings thickening process, a self-made rake was connected to a rheometer to monitor the shear stress and torque. The dewatering performance of the total tailings was greatly improved to a solid mass fraction of 75.33% in 240 min. The dewatering process could be divided into three stages: the rapid torque growth period, damping torque growth period, and constant torque thickening zone. The machine restart was found to have a significant effect on the rake torque; it could result in rake blockage. Furthermore, the simultaneous evolution of the torque and solid mass fraction of thickened tailings was analyzed. A relationship between the torque and the solid mass fraction was established, which followed a power function. Both the experimental and theoretical results provide a reference for the deep cone thickener design and operation to enhance the dewatering performance.

Original languageEnglish
JournalInternational Journal of Minerals Metallurgy and Materials
Volume27
Issue11
Pages (from-to)1430-1437
Number of pages8
ISSN1674-4799
DOIs
Publication statusPublished - Nov 2020

    Research areas

  • dewatering, rake, reconstructed rheometer, tailings, torque monitoring

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