IMPORT Coal BRIQUETTE Coal Russian Lignite South Africa Lignite Calories 7500 - 8100 kcal/kg Volatile % 23 max. Cinder % 7 max. Moisture % 5 max. Sulphur % 0.25 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. Orange Coal Size: 70-100 mm Area of Use: Is used in heating boilers and sold in 25 kg bags. Watermelon Coal Size: 100 + mm Area of Use: Is used in heating boilers and sold in 40 kg bags.