| 新型柱浮选泡沫输送装置及固液两相流动特性 |
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| 引用本文： | 张海军,刘炯天,王永田,曹亦俊.新型柱浮选泡沫输送装置及固液两相流动特性[J].中国矿业大学学报,2011,40(6). |
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| 作者姓名： | 张海军 刘炯天 王永田 曹亦俊 |
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| 作者单位： | 中国矿业大学化工学院,江苏徐州,221116 |
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| 基金项目： | 国家“十一五”科技支撑计划项目(2008BAB31B01); 国家自然科学基金项目(51004107) |
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| 摘 要： | 针对高含气率、高黏性柱浮选泡沫输送的需要,设计了一种新型柱浮选泡沫输送装置,并进行了固液两相流动特性模拟.结果表明,漩涡多靠近叶片工作面,其方向与叶轮旋转方向相反;叶轮内各流道压力分布较为均匀,叶轮中心区域为低压力区;颗粒直径越大,叶片工作面和轮缘处分布的颗粒越多,磨损程度越重;颗粒浓度越大,流体的全速度越高,叶轮出口附近处颗粒速度梯度越大,叶轮受局部磨损程度越重.基于数值模拟的优化设计结果表明,采用后倾叶片、扩大出料管径和增加出料管数量,有利于改善输送效果.
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| 关 键 词： | 浮选柱 泡沫输送 固液两相流 数值模拟 |
Solid-liquid two-phase flow characteristics in a new transportation device for column flotation froth |
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| ZHANG Hai-jun,LIU Jiong-tian,WANG Yong-tian,CAO Yi-jun.Solid-liquid two-phase flow characteristics in a new transportation device for column flotation froth[J].Journal of China University of Mining & Technology,2011,40(6). |
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| Authors: | ZHANG Hai-jun LIU Jiong-tian WANG Yong-tian CAO Yi-jun |
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| Affiliation: | ZHANG Hai-jun,LIU Jiong-tian,WANG Yong-tian,CAO Yi-jun(School of Chemical Engineering & Technology,China University of Mining & Technology,Xuzhou,Jiangsu 221116,China) |
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| Abstract: | A new transportation device for column flotation froth was developed to improve the transportation efficiency of flotation froth with high gas holdup and viscosity.The solid-liquid two-phase flow characteristics in the device were simulated.The results show that the vortex was mainly distributed on the surface of working vane,while its direction was opposite to that of rotating impeller.The static pressure distribution was uniform in the impeller channel,while the minimum pressure was located in the central... |
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| Keywords: | column flotation froth transportation solid-liquid two-phase flow numerical simulation |
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