Studies on Efficacy of Multi Gravity Seperator for Beneficiation of Indian Coal Fines

Abstract

Experiments carried out, using Multi Gravity Separator (MGS), following statistical designs with coal fine samples (two coking and two non-coking coal) from diff-erent coal washeries of eastern India under the present study. While studies with coking coal fine-having around 20% & 29% ash-lighter fraction assaying 13.95% & 17.11 % ash with more than 80% & 70% yield respectively could be achieved, MGS was found to produce lighter fraction assaying <34% ash with more than 80% yield from the non-coking coal fines having 38.41% ash and 40.3% ash respe-ctively. It is worth mentioning that the products (ligh-ter fractions) obtained with coking and non-coking coal fine samples from different washeries are suitable for industrial applications. While former two can be used for steel making, latter two (from non-coking coal fines) can be useful for power generation. Better utilisation of coal fines not only improve the overall process efficiency but help reducing environmental pollution also.