Steam coal from Indonesia has a very low content of ash and sulfur. The sulfur content is clearly below 1%. The largest share of the mined coal is of low calorific range with a calorific value between 5, 500 and 6, 000 kcal/kg. In the high calorific range coal between 6, 100 and more...
Charcoal is a light, black residue, consisting of carbon and any remaining ash, obtained by removing water and other volatile constituents from animal and vegetation substances. Charcoal is usually produced by slow pyrolysis, the heating of wood or other substances in the absencemore...