Evaluation of thixotropic behaviors of tailings pastes as a function of solids concentration基于固体浓度函数的尾砂膏体触变行为评估

被引：0
作者：
Lian-fu Zhang
Hong-jiang Wang
机构：
[1] Anhui University of Science and Technology,School of Mining Engineering
[2] Anhui University of Science and Technology,Anhui Engineering Research Center of Exploitation and Utilization of Closed/Abandoned Mine Resources
[3] University of Science and Technology Beijing,School of Civil and Resource Engineering
来源：
Journal of Central South University | 2023年 / 30卷
关键词：
tailings paste; thixotropy; equilibrium; transient state; solids concentration; 尾砂膏体; 触变性; 稳态; 瞬态; 固体浓度;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Tailings pastes are high-concentration mixtures and exhibit complex thixotropy. This study is to investigate the equilibrium and transient thixotropic behaviours of tailings pastes via a series of constant shear rate tests. The thixotropic model proposed by ZHANG et al is utilized to analyze the effect of solids concentration on thixotropy of tailings pastes. The empirical functions that represent the relationship between equilibrium rheological parameters and solids concentrations is proposed. Meanwhile, a time-dependent model is established to characterize the effect of solids content on the transient shear stress. These functions enable the quantitative analysis of concentration-dependent equilibrium and transient stress evolution for tailings pastes.
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页码：142 / 155
页数：13
相关论文
共 94 条
  • [1] Nasir O(2009)Modeling the heat development in hydrating CPB structures [J] Computers and Geotechnics 36 1207-1218
  • [2] Fall M(2013)Rheology of slurries and environmental impacts in the mining industry [J] Annual Review of Chemical and Biomolecular Engineering 4 239-257
  • [3] Boger D V(2015)The effect of premature wall yield on creep testing of strongly flocculated suspensions [J] Rheologica Acta 54 337-352
  • [4] Stickland A D(2011)Simulations of thixotropic liquids [J] Applied Mathematical Modelling 35 1656-1665
  • [5] Kumar A(2010)3D simulations of the flow of thixotropic fluids, in large-gap Couette and vane-cup geometries [J] Journal of Non-Newtonian Fluid Mechanics 165 299-312
  • [6] Kusuma T E(2012)A critical overview of elasto-viscoplastic thixotropic modeling [J] Journal of Non-Newtonian Fluid Mechanics 187–188 8-15
  • [7] Derksen J J(1997)Thixotropy—A review [J] Journal of Non-Newtonian Fluid Mechanics 70 1-33
  • [8] Potanin A(2019)A review of thixotropy and its rheological modeling [J] Journal of Rheology 63 477-501
  • [9] De S M P R(2009)Thixotropy [J] Advances in Colloid and Interface Science 147–148 214-227
  • [10] Thompson R L(2015)Study on the thixotropy of the fresh concrete using DEM [J] Procedia Engineering 102 1944-1950
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