进口参数对旋流器分离性能的影响（英文）

发布时间：2018-06-28 17:30

本文选题：水力旋流器 + 进口参数　；参考：《Transactions of Nonferrous Metals Society of China》2017年07期

【摘要】：进口参数是影响水力旋流器分级性能的重要因素,研究两者之间的影响规律具有重要意义。基于计算流体力学方法,以各种进口直径和进口速度的组合为研究对象,考察了进口参数对于精确分级的影响效应。结果显示:高分级精度的实现需要组合特定的进口直径和进口速度。过大的进口直径和过快的进口速度会降低分级精度。当进口直径过大时,由于短路流的显著影响,粗颗粒底流回收效率下降严重。流场分析发现原因是溢流管区域流体流动混乱程度的增加以及压力梯度的增强。与此同时,进口速度过快会导致细颗粒受到较大的离心力,引起溢流分离效率的降低。
[Abstract]:The imported parameters are important factors affecting the classification performance of hydrocyclone, so it is of great significance to study the influence law between them. Based on the computational fluid dynamics (CFD) method, the effects of import parameters on the precise classification were investigated with the combination of various inlet diameters and inlet velocities. The results show that the combination of specific inlet diameter and inlet speed is needed to achieve high classification accuracy. Too large inlet diameter and too fast inlet speed will reduce classification accuracy. When the inlet diameter is too large, the recovery efficiency of coarse particle bottom current decreases seriously due to the influence of short-circuit flow. The analysis of flow field shows that the reason is the increase of fluid flow chaos and the enhancement of pressure gradient in overflow tube area. At the same time, too fast inlet speed will cause the fine particles to be subjected to a greater centrifugal force, resulting in the reduction of overflow separation efficiency.
【作者单位】：华东理工大学国家盐湖资源综合利用工程技术研究中心;
【基金】：Project(2011AA06A107)supported by the National High Technology Research and Development Program of China Project(2014M551348)supported by China Postdoctoral Science Foundation Project(51504098)supported by the National Natural Science Foundation of China
【分类号】：TQ051.8

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