金属离子在矿物浮选中的典型作用

在矿物浮选中,金属离子可以通过选择性活化或抑制矿物表面,从而发挥重要的作用.尽管此前大量工作报道了金属离子在浮选中的作用,但大多仅是针对某一特定类型金属离子或目的矿物进行研究分析,缺乏一个全面的综述.本文对金属离子在矿物浮选中的影响因素进行详细分类,总结金属离子在不同种类矿物浮选中的作用机理.此外,还对常见探索作用机理...

Typical roles of metal ions in mineral flotation: A review

In flotation, metal ions possess significant roles that are usually fulfilled by either selectively activating or depressing the target minerals. Despite that tremendous efforts have been made to address the roles of metal ions in flotation, it still lacks a comprehensive review, especially to compare various ions instead of focusing on a specific one. This review begins by elaborately categorizing the factors involved in affecting the roles of metal ions in flotation. After that, well-accepted mechanisms are updated and discussed from the ore type. Furthermore, typical approaches to explore the underlying mechanisms are emphasized, including traditional techniques such as micro-flotation, contact angle measurement, zeta potential measurement, and other recent prevailing methodologies, like computational method, solution chemistry calculation, and cyclic voltammetry. This work will pave the way to promote flotations via activities like selectively adding/reducing metal ions, choosing reagents, and regulating the slurry chemistry.