Measurement of energy requirements for size reduction of ...
A laboratory hammer mill shown in Figure 1 (Animal ration shredder hammer mill foliage, Model: TRF 400; ; 10 swinging hammers) was used for grinding of the palm kernel and groundnut shell. The mill was charged at a constant mass (m t) of 200 g for groundnut shell and 300 g for palm kernel shell. The mass of charge (m t