Abstract
The Indian coals are a sub-bituminous variety, high in ash content and low in calorific value. The high ash content in Indian coals makes Indian coals more heterogeneous. The moisture and the ash content have a direct impact on the calorific value of the coals. In the present work the moisture, ash content and GCV have been analyzed for the coals obtained from various locations in India and the relationship between ash content and GCV was established on a dry basis. The variation in GCV to ash content was statistically quantified for the coals from each mine and overall mines.
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