浮选体系中气泡运动特性研究进展

在浮选体系中,气泡的运动特性直接影响着矿物浮选的选别效果,因此,研究气泡的运动特性,对于优化浮选工艺与改善浮选效果有着重要意义。本文首先简述了浮选中常见的气泡生成方式,主要有机械搅拌发泡、气泡发生器发泡、电解发泡及超声波发泡四种方式；气泡参数中介绍了气泡形态特征参数、运动特征参数和分布特征参数的含义和计算公式；然后重点阐述了浮选中起泡剂、捕收剂、抑制剂、浮选机叶轮参数、浮选柱气泡发生器及充气量对气泡参数的影响；归纳了纳米气泡在微细粒矿物浮选中的应用；最后指出,完善气泡测量方法、侧重于气泡在实际浮选环境中的运动特性研究以及研发新型纳米气泡生成设备将是未来的发展方向。

Research progress of bubble movement characteristics in flotation system

In the flotation system, the movement characteristics of bubbles directly affect the separation effect of mineral flotation. Therefore, it is of great significance to study the movement characteristics of bubbles for optimizing the flotation process and improving the flotation effect. In this paper, the common bubble generation methods in flotation are briefly described, including mechanical stirring foaming, bubble generator foaming, electrolytic foaming and ultrasonic foaming; The meaning and calculation formula of bubble morphological characteristic parameters, motion characteristic parameters and distribution characteristic parameters are introduced in Bubble Parameters; Then, the effects of foaming agent, collector, inhibitor, impeller parameters of flotation machine, bubble generator of flotation column and air volume on bubble parameters in flotation are emphatically described; The application of nano-bubbles in the flotation of fine minerals is summarized; Finally, it is pointed out that improving bubble measurement methods, focusing on the study of bubble motion characteristics in the actual flotation environment, and developing new nano bubble generation equipment will be the future development direction.