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The effect of regrinding on the design of flotation circuits
Minerals Engineering ( IF 4.8 ) Pub Date : 2020-09-01 , DOI: 10.1016/j.mineng.2020.106524
Renato Acosta-Flores , Freddy A. Lucay , Edelmira D. Gálvez , Luis A. Cisternas

Abstract The regrinding of some streams within flotation circuits, to liberate valuable mineral attached to gangue, is a common practice. However, the methodologies proposed for flotation circuit design based on optimization, usually, do not consider regrinding. This work analyzes the effect of the uncertainty in flotation and regrinding stages on the design of flotation circuits via mathematical optimization. We postulate that there are few optimal circuit structures when regrinding is included in the design problem under uncertainty. Two methods of proof are used to confirm the postulated hypothesis: proof by construction and proof by exhaustion. Results obtained allow us to confirm the hypothesis, which allows separating the design of the flotation circuits into two steps. First, a set of optimal structures are determined. Second, the equipment design parameters and operating conditions are determined through simulation and laboratory tests.

中文翻译:

重磨对浮选回路设计的影响

摘要 在浮选回路中重新研磨一些流,以释放附着在脉石上的有价值的矿物,这是一种常见的做法。然而,提出的基于优化的浮选电路设计方法通常不考虑重磨。这项工作通过数学优化分析了浮选和重磨阶段的不确定性对浮选回路设计的影响。我们假设在不确定的设计问题中包含重新研磨时,几乎没有最佳电路结构。两种证明方法用于确认假设的假设:构造证明和穷举证明。获得的结果使我们能够确认假设,这允许将浮选回路的设计分为两个步骤。首先,确定一组最佳结构。第二,
更新日期:2020-09-01
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