Compressed charcoal is charcoal whose shapes can be controlled in the form of cylindrical sticks with a diameter of 3/4 inch and a length of 10 to 20 cm . It is made from coal residues and one of its advantages is that it does not emit odor or smoke and remains burning for a long time. It is used in homes as it is easy to use.
However, it emits crion monoxide gas throughout the period of its initial ignition, so it is advised not to use it indoors and to limit its use in the open air. Numerous deaths have been recorded in Japan from suffocation with this toxic gas as a result of its use in a closed environment. Methods of making compressed coal are divided into two ways:
- The first method relies on wood waste, where the wood waste is chopped and pressed with special presses for this purpose, and then the output from these presses is charred in special charring furnaces for this purpose, so that it is environmentally compatible and does not emit any pollution or gases polluting the environment , as in the old methods of charring
- The second method depends mainly on small coal residues resulting from its extraction in large quantities, which are pressed and compressed either in the form of molds or oval shapes the size of an egg , so it is easy to use cleanly without causing the spread of dust.