SPLIT PROCESSING OF HIGH ASH INDIAN COKING COAL FINES USING JAMESON FLOTATION CELL

摘要

The processing of two samples of high ash Indian coking coal fines (-500 ìm) 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 (>300ìm). Split processing involving spiral concentration of the coarser fraction (-500 + 100 ìm) and Jameson Cell flotation of the -100 ìm 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.