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The Effects of Water Recycling on Flotation at a North American Concentrator—Part 1

Journal of Minerals and Materials Characterization and Engineering 2020年第4期8卷 240-276页

作者： Antonio Di Feo Saviz Mortazavi Sean Langley Lucie Morin gauri prabhakar André Demers Ian Bedard Konstantin Volchek Natural Resources Canada CanmetMINING Ottawa Canada Natural Resources Canada CanmetMINING Sudbury Canada

Water chemistry and its impact on mineral processing operations are not well understood and often not adequately monitored. CanmetMINING, as part of its water management research program, has been involved in a project initiated to identify opportunities for improving water recovery, water treatment, and recycling in the mining and mineral processing operations. One of the main objectives of this work is to evaluate and assess water chemistry and identify factors that impact mineral recovery, concentrate grade, and metal extraction efficiencies in order to understand and mitigate negative impacts of water recycling and improve process efficiency. In collaboration with a North American concentrator, CanmetMINING has been involved in assessing the water chemistry in the mill and evaluating water recycling options for select process streams to reduce fresh water intake and maximize recycling. The overall goal of the project is to investigate options for water recycling (increase the thickener overflow recirculation from thickener overflow tank) without affecting nickel and copper metallurgy. The results of the sampling campaigns showed that the water chemistry of the streams was fairly consistent throughout the year with no significant seasonal variations. The laboratory tests illustrated that when higher quantities of thickener overflow from thickener overflow were used, the nickel + copper grade versus nickel recovery curves shifted towards lower values. These observations were observed for the plant water samples obtained in April, June and August 2019.

关键词： Copper Recovery Flotation Multivariate Analysis of Variance (MANOVA) Nickel Recovery Process Water Thickener Overflow Water Recovery Water Recycling

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