After grinding, the moisture contents of the ground feedstock and fines were measured. It was noted that the
magnitude of moisture loss was greater for higher-moisture
feedstock materials (table 1). During grinding, a significant
amount of heat was generated in the grinding chamber due
to particle-particle and particle-hammer friction during size
reduction. The moisture loss from the feedstock material
can be attributed to this heating during the grinding
process, as well as the increase in surface area of the
broken particles, which facilitated drying.