基于数值计算的浮选机内颗粒流动行为研究

浮选机内矿浆动态流动性能研究对于优化浮选机具有重要意义。利用CFD数值模拟方法研究了浮选机内矿浆动态流动特性,并讨论了不同粒径矿石颗粒的分布特点,矿浆的动态流动并未破坏浮选机的循环流场结构,固相颗粒也形成了循环特征流场。单一固相粒径分析表明,随着给矿粒径的增加,浮选机槽底的沉积现象加重。多固相粒径分析表明,浮选机对不同粒级颗粒的提升能力和搅拌混合能力是不同的,为提高粗颗粒的回收能力,需要提高颗粒的提升高度。

The Numerical Research on the Flow Behavior of Particles in Flotation Cell

The research on the dynamic flow of slurry in flotation cell is significant for the flotation cell study and optimization. The dynamic flow of slurry in flotation cell is studied by CFD simulation in this paper. And the distribution characteristics of different particle diameters are discussed. The dynamic flow of slurry does not break the circulation flow structure in flotation cell. And the solid particles also formed the circulation flow. According to single particle diameter of the solid phase analysis, as the particle diameter is increased, there is an aggravating deposition phenomenon at the bottom of the flotation cell. According to multiple particle diameters of the solid phase analysis, the lifting performance and mixing performance of different particle diameters are different in flotation cell. To improve the recovery capacity of the coarse particles, it is necessary to increase the height of particles.