Processing of coal fines in a water-only cyclone |
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Authors: | A.K. Majumder J.P. Barnwal |
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Affiliation: | a Department of Mining Engineering, Indian Institute of Technology, Kharagpur 721302, India b Advanced Materials and Processes Research Institute, Hoshangabad Road, Bhopal 462 026, India |
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Abstract: | It is reported in the literature that a water-only cyclone (WOC), a centrifugal gravity concentrator, is an alternative to froth flotation to treat coal fines (below 0.5 mm). This unit overcomes the inherent limitations of froth flotation and the dense-medium cyclone techniques as it requires no chemicals or artificial medium. The literature dealing with WOC performance to treat coal fines is also limited and as a result it is not well established how the design variables affect the performance of a WOC while treating coal fines. Therefore, an attempt has been made to develop regression models based on factorial design of experiments to quantify the effects of major design variables of a WOC on the beneficiation characteristics of a typical coal fine sample. Further attempts have been made to provide possible explanations on the observed trends of the data based on simple hydrodynamic analyses. |
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Keywords: | Water-only cyclone Coal fines Statistical design Hydrodynamic analysis |
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