Processing of coal fines in a water-only cyclone

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 che...

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Bibliographic Details
Published in:Fuel (Guildford) 2011-02, Vol.90 (2), p.834-837
Main Authors: Majumder, A.K., Barnwal, J.P.
Format: Article
Language:English
Subjects:
Applied sciences
Beneficiation
Coal
Coal fines
Computational fluid dynamics
Cyclones
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Flotation
Fuels
Gravity concentrators
Hydrodynamic analysis
Mathematical models
Regression
Statistical design
Water-only cyclone
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Summary: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.
ISSN:0016-2361
1873-7153
DOI:10.1016/j.fuel.2010.10.038