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Volume 33 Issue 7
Jul.  2021
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Article Contents
ZHAI Yong-gang, WU Ai-xiang, WANG Hong-jiang, CHEN Qin-rui, XIAO Yun-tao, SHOU Zhen-yu. Threshold mass fraction of unclassified-tailings paste for backfill mining[J]. Chinese Journal of Engineering, 2011, 33(7): 795-799. doi: 10.13374/j.issn1001-053x.2011.07.009
Citation: ZHAI Yong-gang, WU Ai-xiang, WANG Hong-jiang, CHEN Qin-rui, XIAO Yun-tao, SHOU Zhen-yu. Threshold mass fraction of unclassified-tailings paste for backfill mining[J]. Chinese Journal of Engineering, 2011, 33(7): 795-799. doi: 10.13374/j.issn1001-053x.2011.07.009

Threshold mass fraction of unclassified-tailings paste for backfill mining

doi: 10.13374/j.issn1001-053x.2011.07.009
  • Received Date: 2010-05-14
    Available Online: 2021-07-30
  • The rheological characteristics and parameters of the filling slurries of 69% to 81% in mass fraction were tested with a four-bladed vane rotary rheometer taking unclassified-tailings filling paste as a research object.Based on the Herschel-Bulkley model,the rheological models were derived from regression at shear rates of 0 to 120s-1.It is shown that the rheological models exhibit yield-pseudoplastic for the filling slurries of 69% to 81% in mass fraction and Bingham plastic for the filling slurries of 81% in mass fraction.There is a good linear relationship between the flow behaviour index n and the mass fraction of filling slurries,and the flow behaviour index n increases with the mass fraction of filling slurries increasing.Finally,the threshold mass fraction of the paste is 80.91%.

     

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