Zhang Fanfan, Sun Lijuan, Yang Haichang, Gui Xiahui, Schönherr Holger, Kappl Michael, Cao Yijun, Xing Yaowen
School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China.
National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China.
Adv Colloid Interface Sci. 2021 May;291:102403. doi: 10.1016/j.cis.2021.102403. Epub 2021 Mar 18.
Traditional froth flotation is the primary method for the separation and upgrading of fine mineral particles. However, it is still difficult for micro-fine and low-quality minerals to effectively separate. It is generally believed that bubble miniaturization is of great significance to improve flotation efficiency. Due to their unique physical and chemical properties, the application of nanobubbles (NBs) in ore flotation and other fields has been widely investigated as an important means to solve the problems of fine particle separation. Therefore, a fundamental understanding of the effect of NBs on flotation is a prerequisite to adapt it for the treatment of fine and low-quality minerals for separation. In this paper, recent advances in the field of nanobubble (NB) formation, preparation and stability are reviewed. In particular, we highlight the latest progress in the role of NBs on particles flotation and focus in particular on the particle-particle and particle-bubble interaction. A discussion of the current knowledge gap and future directions is provided.
传统泡沫浮选是细粒矿物颗粒分离与提质的主要方法。然而，微细粒和低品位矿物的有效分离仍然困难。一般认为，气泡微细化对于提高浮选效率具有重要意义。由于纳米气泡（NBs）独特的物理化学性质，其在矿石浮选等领域的应用作为解决细颗粒分离问题的重要手段已得到广泛研究。因此，深入了解纳米气泡对浮选的影响是将其应用于细粒和低品位矿物分离处理的前提。本文综述了纳米气泡形成、制备及稳定性领域的最新进展。特别强调了纳米气泡在颗粒浮选作用方面的最新进展，尤其关注颗粒 - 颗粒和颗粒 - 气泡相互作用。同时对当前的知识空白和未来方向进行了讨论。
