During pelletization darker pellets have the tendency to
make more fines since containing more bark.
• For all used softwood pellets, the highest percentage of
particles in pellets(≈30%) in the size range of 0.5‐1.0 mm
can be the result of the die and roller distance.
• During pelletization, some large particles were reduced to
smaller sizes; hence it is not recommended to have too
many fine particles in the materials for pelletizing.