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.
metal ionsflotationoxide mineralsilicate mineralsulfide mineral
高志勇、江哲伊、孙伟、高跃升
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中南大学 资源加工与生物工程学院,长沙 410083
中南大学 战略含钙矿物资源清洁高效利用湖南省重点实验室,长沙 410083
Department of Chemical Engineering, Michigan Technological University, Houghton 49931, United States
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