The experiments of this study were carried out to optimize some grinding parameters and their effects on the quality of corn
for feed processing. The hammer mill was evaluated under different parameters including grain moisture content and sieve hole
diameter. Grinding process was evaluated by studying the performance, energy consumption, grinding index, grinding ability
index, ground quality at different operation conditions. The results revealed that the mill performance, specific energy, energy
density, grinding index and grinding ability index ranged from 0.70-6.83 Mg/h, 3.38-32.72 kJ/kg, 1.99-18.82 MJ/m3, 12.35-91.28
kJ.mm0.5/kg and 0.81-6.00 kJ/m2, respectively. Mean weight diameter, size reduction, bulk density and grinding effectiveness
ranged from 1.47-2.89 mm, 2.60-5.10 times, 524.58- 621.34 kg/m3 and 8.88-14.40, respectively at different sieve hole diameter
and grain moisture content.