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The Life Cycle of Water Used in Flotation: a Review

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Abstract

Since human daily demands for fresh water have been increased significantly, the supply of fresh water for the mining industry, especially froth flotation, should be considerably reduced. In addition, stricter environmental standards have been implemented in many countries to reduce the risks due to the disposal of wastewater, many flotation operators have to seek more efficient ways to utilize the limited fresh water sources. Recycling water with high concentrations of impurities is a normal strategy for most of the mineral processing plants; however, water quality should be carefully considered to guarantee a smooth flotation process. Recently, the application of seawater in flotation has attracted much attention due to its availability and abundance rather than fresh water. However, the influencing mechanisms due to the application of seawater in flotation have not been fully understood especially the reactions between mineral particles and bubbles in the presence of high concentrations of cations and anions. This would impede the application of alternatives to fresh water in the flotation. Therefore, this paper reviews the current water sources and the technologies for water recycling in the flotation process. Specifically, the life cycle of water in flotation was proposed. In addition, the strategies including high pulp density flotation as well as the most promising alternatives to fresh water have been discussed in details, with the related mechanisms being demonstrated.

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This study received financial supports from the National Natural Science Foundation of China under the projects of 51474167 and 51774223.

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  1. School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, Hubei, China

    Yubiao Li, Shaobing Xie, Yunliang Zhao, Hongqiang Li & Shaoxian Song

  2. Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Wuhan, 430070, Hubei, China

    Ling Xia & Shaoxian Song

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  1. Yubiao Li
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Li, Y., Xie, S., Zhao, Y. et al. The Life Cycle of Water Used in Flotation: a Review. Mining, Metallurgy & Exploration 36, 385–397 (2019). https://doi.org/10.1007/s42461-018-0004-z

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