· A steady mill operating condition was obtained within few minutes of starting the mill. Feed rate to the mill was adjusted to 70 to 80% of full load of the mill. From the collected ground product, approximately kg was collected and preserved in airtight plastic bags for size distribution analysis within one or two days of milling. Size distribution analysis of the ground .
A hammer mill is essentially a steel drum containing a vertical or horizontal rotating shaft or drum on which hammers are mounted. The hammers are free to swing on the ends of the cross, or fixed to the central rotor. The rotor is spun at a high speed inside the drum while material is fed into a feed hopper.