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摘要:
气泡作为浮选过程的载体，其特征对浮选效率有显著影响，气泡特征调控是强化浮选过程的有效手段，近年来，微泡浮选引起广泛的关注。本文从微泡生成、气泡特征调控及矿化机制等方面总结了微泡浮选的研究进展。介绍了射流发泡、微孔介质发泡、溶气发泡、超声发泡和电解发泡的发泡原理及应用。从表面活性剂、电解质和能量输入角度分析了微泡直径的调控机制，并基于气泡形态和上升速度方面探讨了微泡运动特性的调控机制；从颗粒与气泡的碰撞、粘附和脱附过程角度全面分析了微泡与颗粒的作用机理。最后对浮选微泡调控及其作用机制的未来发展趋势进行展望。
Abstract:As the carrier in the flotation process, bubble motion features have a significant impact on the flotation efficiency. The regulation of bubble characteristics is an effective method to enhance the flotation process. In recent years, microbubble flotation has received extensive attention. This paper reviews the advance of microbubble flotation from microbubble generation, microbubble features regulation and mineralization mechanism. The foaming principles and applications of jet foaming, microporous medium foaming, dissolved gas foaming, ultrasound foaming and electrolysis foaming are introduced. The regulation mechanism of microbubble size is analyzed from surfactants, electrolytes and energy input. The regulation mechanism of microbubble movement characteristics is discussed based on the bubble shape and rising velocity. Interaction mechanism of particles and microbubbles is fully analyzed from particle-bubble collision, attachment and detachment. Finally, the development of microbubble regulation and action mechanism is prospected.
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Key words:
- Flotation /
- Microbubbles /
- Bubble size /
- Motion features /
- Mineralization
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