IMPORT Coal BRIQUETTE Coal Russian Lignite South Africa Lignite Calories 6500 - 6800 kcal/kg Volatile % 25 max. Cinder % 13 max. Moisture % 7 max. Sulphur % 0.40 max. Coal Types Powder Coal Size: 0-12 mm Area of Use: It is mostly used for industrial purposes but also often used as raw material in briquette coal production. Hazelnut Coal Size: 12-22 mm Area of Use: Is sold in 25 kg bags for room heaters with stoker systems but also can be used for industrial purposes. Walnut Coal Size: 22-70 mm Area of Use: Is used in stoves and heating boilers and sold in 25 kg bags.