... 5 hours, easy deliming, white ash, the content of ash: 2.6% -3.6 %, calorific value:7600-8600 kcal, moisture content ... 4 hours, easy deliming, white ash, the content of ash: 2.6% -3.6 %, calorific value:7200-7600 kcal, moisture ... charcoal knock charcoal, good hardness, specific gravity:1.1-1.2, length:8-35 cm, diameter: 3.5 -3.9 ... in Stock(for export) Sawdust Machine-made Charcoal for Calcium Carbide