中南大学学报（自然科学版）Issue(1)：1-7,7.DOI:10.11817/j.issn.1672-7207.2016.01.001
基于Fluent的快浮嵌入式浮选柱给料方式数值研究
Numerical research on feed mode of flotation column embedded with fast flotation unit based on Fluent
摘要
Abstract
Based on characteristics of fast speed and large amount of foam in flotation of micro-fine bauxite, a fast flotation unit embedded in the cyclone-static micro bubble flotation column was proposed. In order to study the effects of feeding methods on flow field in flotation column embedded with fast floating units, Fluent, a computational fluid dynamics software, was used to simulate the internal flow field structure of flotation column with different feeding forms, including a traditional industry feeding form as well as two feeding forms under fast floating unit. The results show that all the forms could meet the basic requirements of flotation column for sorting materials, in spite of the difference of flow lines in the column. For three feeding methods, the vortex intensities of swirl segment in column are basically the same, and the maximum difference among the tangential velocities at the same radial position is within 0.1 m/s, which illustrates that feeding methods have little influence on the flow field in flotation column. For the feed method of ring device, the turbulent kinetic energy of feeding segment and the axial velocity of the column sorting segment are mainly concentrated in the range of 0−0.05 m2/s2 and−0.15−0.15 m/s, respectively. In addition, axial velocity distributed in the radial direction is more stable than those when using the other two methods in the column sorting segment. Therefore, compared with the other methods, the ring feed device of fast floating unit is more beneficial for mineral sorting and secondary enrichment.关键词
旋流-静态微泡浮选柱/快速浮选单元/Fluent/数值模拟/给料方式Key words
cyclone-static micro bubble flotation column/fast flotation unit/Fluent/numerical simulation/feeding mode分类
矿业与冶金引用本文复制引用
张宁宁,周长春,闫小康..基于Fluent的快浮嵌入式浮选柱给料方式数值研究[J].中南大学学报（自然科学版）,2016,(1):1-7,7.基金项目
国家自然科学基金资助项目(51174205)；新世纪优秀人才支持计划资助项目(NCET-12-0962)；中央高校基本科研业务费专项资金资助项目(2011QNB09，2014QNB16)(Project(51174205) supported by the National Natural Science Foundation of China （51174205）
Project(NCET-12-0962) supported by the Program for New Century Excellent Talent in University （NCET-12-0962）
Project(2011QNB09,2014QNB16) supported by the Fundamental Research Funds for the Central Universities) （2011QNB09,2014QNB16）
