Coal is one of the main sources of energy in many parts of the world and has one of the largest reserves amongst all the non-renewable energy sources. The effect of different size fractions of coal has been analysed by taking into account three types of coal namely Australian Hard, PCC (Prime Coking Coal), MCC(Medium Coking Coal).Various tests have helped in understanding the effect of different size fractions on coal quality. The bulk density of the master sample of all the three coals was found to be the average of the three size fractions i.e. +6mm, 3.2mm and -3.2mm respectively. The bulk density of all the three size fraction of coal decreases with decrease in size fractions. Also a decrease in void spaces between the coal samples with decrease in size fraction was observed. Proximate analysis, CSN and LTGK tests showed the values of the master sample to be an average of the three size fractions. There was a significant increase in volatile matter with decrease in size fraction. Generally, coal ash tries to retain higher size fraction in case of Indian coal.
