Analysis of the Effect of Variations in Grinding Wheel Speed ​​and Characteristics on Milling Yield Capacity

Abstract

Optimizing the processing of agricultural waste, especially peanut hulls, is a significant challenge in
increasing the economic value of food byproducts. This study aims to analyze the performance of a disc mill
through experiments exploring two key mechanical parameters: variations in shaft rotational speed and the
geometric characteristics of the grinding wheel (number of blades). Experiments were conducted using an
FFC-15 machine, where the grinding wheel was varied to 2, 3, and 4 blades, combined with variations in shaft
rotational speed of 2400, 2600, and 2800 rpm. The results showed a nonlinear phenomenon, namely that
increasing the number of blades did not always increase efficiency. The 4-blade configuration actually caused
air turbulence and flow resistance, thus reducing production capacity, while the 2-blade configuration
triggered the release of many fine particles. The best performance was achieved with a 3-blade configuration
at 2800 rpm, which produced the highest grinding capacity of 0.095 kg per minute. This configuration offers
the best balance between impact frequency and material circulation space, thus becoming a technical
recommendation for improving the efficiency of the husk waste processing machine.