coal grades and its specifications south african coal KOOKS
Coal and Related Coal Products Frequently Asked ... Flamite. No coal is graded according to its energy content (CV) as well as its size. An A grade coal has a CV higher than 27,5 MJ/kg, a B grade between 26,5 27,5 MJ/kg, a C grade between 25,5 26,5 MJ/kg etc. A common misconception occurs when people discuss "export quality coal".