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An Investigation into the Effect of Water Quality on Flotation Performance

By Edison Muzenda

Abstract

Abstract—A study was carried out to determine the effect of water quality on flotation performance. The experimental test work comprised of batch flotation tests using Denver lab cell for a period of 10 minutes. Nine different test runs were carried out in triplicates to ensure reproducibility using different water types from different thickener overflows, return and sewage effluent water (process water) and portable water. The water sources differed in pH, total dissolved solids, total suspended solids and conductivity. Process water was found to reduce the concentrate recovery and mass pull, while portable water increased the concentrate recovery and mass pull. Portable water reduced the concentrate grade while process water increased the concentrate grade. It is proposed that a combination of process water and portable water supply be used in flotation circuits to balance the different effects that the different water types have on the flotation efficiency. Keywords—Flotation, mass pull, process water, thickener overflows, water quality. I

Year: 2011
OAI identifier: oai:CiteSeerX.psu:10.1.1.190.6757
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