Before any raw material can be used in the pellet mill it`s moisture content must be reduced or increased to an acceptable level. Most virgin wood based materials will have very high moisture content in excess of 40%. Therefore drying is required. However, how dry does the material need to be? Each raw material is different, though as an average between 10% and 15% is common.
It`s possible to produce a pellet within the maximum and minimum range of the pellet mill. The qualityof the pellet, the productivity of the pellet mill and the energy consumption of the pellet mill will change according to the moisture content.