Author： Das A. Singh R. Bhattacharyya K. K.
Publisher： Taylor & Francis Ltd
ISSN： 0882-7508
Source： Mineral Processing and Extractive Metallurgy Review, Vol.32, Iss.1, 2011-01, pp. : 17-23
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Abstract
The processing of two samples of high ash Indian coking coal fines (-500 m) has been studied. Mechanical cell flotation of two coal samples resulted in poor recovery of combustibles at a specified ash content of 17%. The use of Jameson Cell for flotation was also found helpless in improving the performance. The poor recovery of combustibles was attributed to low recovery of coarse particles (>300 m). Split processing involving spiral concentration of the coarser fraction (-500 + 100 m) and Jameson Cell flotation of the -100-m fraction resulted in an improved overall performance. Substantial improvement in the yield of clean coal at the same target ash (17%) could be achieved in split processing.
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