Wood chips are produced directly by grinding trunks and brushwood or as a by-product of sawmill processes.
They can be utilized either as a fuel in power plants and as a row material in MDF production plants and paper mills.
The main characteristics of fuel grade Wood chips are as follows:
|Net Calorific Value||GJ/mt||12-13|
|> 100 mm||% max||max 1|
|3.15 mm < 63 mm||% minimum||max 80|
|< 1 mm||% max||max 5|
|> 45 mm||% max||max 5-10|
|16 mm < 45 mm||% minimum||max 60-65|
|< 3.00 mm||% max||max 2|
The main characteristics of Wood chips for MDF vary according to timber species (hard/soft wood); they concern particularly the content of bark, allowed generally up to 2-3%, and the particle size as per the following table:
|Typical Specifications as Received Basis|
|> 45 mm||% max||5-10|
|> 16 mm < 45 mm||% minimum||60-65|
|< 3.00 mm||% max||2|