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DOI:
有色金属工程:2020,(9):-
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固相密度对浮选机内固-液两相流悬浮均匀性的影响
郭传州, 匡敬忠, 周原彬
(江西理工大学 资源与环境工程学院)
Effect of solid-phase density on suspension homogeneity of solid-liquid two-phase flow in flotation machine
GUO Chuanzhou, KUANG Jingzhong, ZHOU Yuanbin
(Faculty of Resource and Environmental Engineering,Jiangxi University of Science and Technology)
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投稿时间:2020-03-16    修订日期:2020-03-16
中文摘要: 借助计算流体动力学(CFD)方法,采用欧拉-欧拉模型研究了WEMCO浮选机内固-液两相流的流动规律,探讨了湍流模型、固相密度及转速对固液流场特性、固体分散均匀性和功耗的影响。结果表明:Shear stress transport (SST)湍流模型能更好地预测固液流场流动及固体分散性,流体在叶轮作用下形成上下两个循环流并呈中心轴对称结构。随着叶轮转速的增加,固体悬浮分散性显著提高,功耗呈指数增加。当固体密度增加时,固体悬浮均匀度ξ值与叶轮转速呈线性变化,固相密度越高越不利于悬浮分散。
Abstract:By means of computational fluid dynamics (CFD), the solid-liquid two phase flow regularity in WEMCO flotation machine was studied by Euler-Euler model. The influence of turbulence model, solid-phase density and impeller speeds on solid-liquid flow field characteristics, solid homogeneity and power consumption were discussed. Results show that the Shear stress transport (SST) turbulence model can better predict the solid-liquid flow field flow and solid dispersion, and the fluid under the action of the impeller forms a central axisymmetrical structure of the upper and lower circulatory flows. With the increase of impeller speed, the dispersion of solid suspension increases obviously, and the power consumption increases exponentially. With the increase of solid density, the uniformity of solid suspension changes linearly with the rotating speed of the impeller.
文章编号:     中图分类号:TD456    文献标志码:
基金项目:江西省教育厅科技项目(GJJ150613)。
引用文本:
郭传州,匡敬忠,周原彬.固相密度对浮选机内固-液两相流悬浮均匀性的影响[J].有色金属工程,2020,(9):.

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