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Charcoal - the process of obtaining

The finest charcoal grades have a brilliant black color with a deep bluish tint.  They are characterized by voicing on impact and the presence of radial cracks over the entire surface.
 The density of charcoal depends on the type of wood.  For example, 1 cu.  m of birch coal weighs about 203 kg, lime - 160 kg, spruce - 176 kg, beech - 183 - 187 kg.
  In fact, the true density of charcoal increases with its burning temperature.  At an incandescent temperature of 340 °, we have only a more or less altered tree, its density does not increase, but only decreases.  Before this temperature, direct decomposition occurs of wood, which is not yet accompanied by sintering - compaction of the residue, which can be taken as the main characteristic of charcoal.  Together with the increase in density and with increasing temperature, the ability of coal to absorb moisture decreases, its flammability and its main characteristic - thermal conductivity - increases.
 Thus, the quality of charring product - charcoal depends on the conditions of the process of its production and, most importantly, on the height of the temperature.  In view of this, in order to obtain high-quality charcoal, incandescence is performed slowly while keeping the temperature at a relatively low temperature.  The process of glowing without air in closed containers is called "dry distillation."
 Much attention is paid to the development of technology for producing charcoal of high quality Ukrainian company Greenpower.


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