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The role of surface forces in mineral flotation
Current Opinion in Colloid & Interface Science ( IF 8.9 ) Pub Date : 2019-11-14 , DOI: 10.1016/j.cocis.2019.11.005
Yaowen Xing , Mengdi Xu , Xiahui Gui , Yijun Cao , Martin Rudolph , Hans-Jürgen Butt , Michael Kappl

Flotation is an interfacial separation technique, which plays a major role in mineral processing industry. It separates particles according to their wetting properties. In flotation pulp, particles and bubbles are highly dispersed in aqueous medium and in the presence of various flotation reagents. Almost all interfacial interactions including inter-particle, inter-bubble, and bubble-particle interactions in the complex pulp medium are driven by surface forces. Therefore, a fundamental understanding of the role of surface forces in flotation is a prerequisite to enhance practical flotation performance and adapt it for treatment of complex and refractory ores. In this paper, recent advances in the field of surface forces encountered in mineral flotation are reviewed. In particular, we highlight the latest progress in the attachment mechanism between bubble and particle with the aid of atomic force microscope and interference microscope. The current knowledge gap and future directions are also discussed.



中文翻译:

表面力在矿物浮选中的作用

浮选是一种界面分离技术,在矿物加工行业中起着重要作用。它根据其润湿性将颗粒分离。在浮选浆中,在各种浮选剂的存在下,颗粒和气泡高度分散在水性介质中。复杂纸浆介质中的几乎所有界面相互作用(包括粒子间,气泡间和气泡-粒子相互作用)都是由表面力驱动的。因此,对表面力在浮选中的作用有基本的了解是增强实际浮选性能并使之适用于处理复杂和难熔矿石的先决条件。本文综述了矿物浮选中表面力领域的最新进展。特别是,我们借助原子力显微镜和干涉显微镜重点介绍了气泡与颗粒之间的附着机理的最新进展。还讨论了当前的知识差距和未来的方向。

更新日期:2019-11-14
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