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 |
Ash | % | max 4 |
Moisture | % | max 35 |
Particle size: | ||
> 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 | ||
Particle size: | ||
> 45 mm | % max | 5-10 |
> 16 mm < 45 mm | % minimum | 60-65 |
< 3.00 mm | % max | 2 |