基于非牛顿流体流变的伊朗库什克铅锌矿尾矿浆输运试验研究

IF 1.1 Q3 MINING & MINERAL PROCESSING
J. V. Mehrabani, M. Goharkhah
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引用次数: 0

摘要

在目前的研究工作中,设计了一套输送浆体到伊朗库什克铅锌矿尾矿坝的管道系统。试验主要研究了不同密度下料浆的流变特性,建立了剪切应力随变形速率变化的非牛顿模型。结果表明,浓浆体剪切应力服从塑性Bingham模型。研究结果还表明,料浆的屈服应力和表观粘度随密度的增大而增大。提出了表观粘度和屈服应力随矿浆浓度变化的关系式。下一步,根据不同的泥浆密度和管道尺寸,计算所需的设计参数,如泥浆流速、压降、临界速度、起流和水头损失所需的最小水头。最后根据实验数据和计算参数设计了合适的管道系统。综上所述,在不使用泵送系统的情况下,3 in管径可以输送固体浓度在44% < Cw < 60%(重量比)之间的浆液。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An investigation on tailing slurry transport in Kooshk lead-zinc mine in Iran based on non-Newtonian fluid rheology: an experimental study
In the current research work, a piping system is designed for slurry transport to the tailing dam in the Kooshk lead-zinc mine, Iran. The experiments are carried out primarily to investigate the rheological behavior of the slurry at different densities and obtain a non-Newtonian model for the shear stress variation with the deformation rate. It is shown that the shear stress of concentrated slurry follows the plastic Bingham model. The results obtained also indicate the increasing trend of the yield stress and the apparent viscosity of the slurry with the density. Appropriate correlations are proposed for the apparent viscosity and yield stress as a function of pulp concentration. At the next step, the required design parameters such as the slurry flow rate, pressure drop, critical velocity, and minimum required head for flow initiation and head losses are calculated for different slurry densities and pipe sizes. The appropriate piping system is finally designed based on the experimental data and the calculated parameters. It is concluded that the 3 in diameter pipe can be used to deliver the slurry with solid concentrations between 44% < Cw < 60% by weight, without a pumping system.
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来源期刊
Journal of Mining and Environment
Journal of Mining and Environment MINING & MINERAL PROCESSING-
CiteScore
1.90
自引率
25.00%
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0
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