School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China.
Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada.
Ultrason Sonochem. 2020 Jan;60:104739. doi: 10.1016/j.ultsonch.2019.104739. Epub 2019 Aug 19.
Ultrasound technology is widely applied in the flotation process. From the perspective of the theory of ultrasound, this article explains the effects and applications of ultrasound in the flotation process. To obtain a clear understanding of ultrasonic effects, we observe the phenomena of ultrasound using a high-speed camera and a CCD camera, and investigate potential applications in flotation. From these different phenomena, the ultrasonic effects are classified into three types of effect: the transient cavitation effect, stable cavitation effect, and acoustic radiation force effect. Based on these effects, the applications of ultrasound to mineral flotation are reviewed, including slime coating removal, oxidation film removal, desulfuration, tiny bubble generation, flotation reagent dispersion, and aggregation. In addition, the ultrasonic equipment and treatment methods applied in flotation are classified and compared based on their characteristics. Finally, we propose some potential directions in the study of the stable cavitation effect and acoustic radiation force effect, which are important, but are seldom mentioned in previous reports.
超声技术在浮选过程中得到了广泛的应用。本文从超声理论的角度，阐述了超声在浮选过程中的作用和应用。为了更清楚地了解超声的作用，我们使用高速摄像机和 CCD 摄像机观察超声现象，并研究其在浮选过程中的潜在应用。从这些不同的现象中，将超声作用分为瞬态空化作用、稳定空化作用和声辐射力作用三种类型。基于这些作用，综述了超声在矿物浮选方面的应用，包括矿泥的去除、氧化膜的去除、脱硫、微气泡的生成、浮选药剂的分散和团聚。此外，根据超声设备的特点，对浮选过程中应用的超声设备和处理方法进行了分类和比较。最后，提出了在稳定空化作用和声辐射力作用方面的一些潜在研究方向，这些方向很重要，但在以前的报道中很少提及。
