DISK ROTATION SPEED AND DIAMETER OF IMPACTOR IN DISK MILL ON PARTICLE SIZE DISTRIBUTION FROM RICE HUSK

Researches on material milling have also been well documented. However, these studies have not yet reported on the impactor diameter and disk rotational speed conditions that are suitable milling process. The purpose of this study was to evaluate the effect of impactor diameter and disk rotation speed on the particle size distribution on the disk mill. To test the effect of impactor diameter and disk rotation speed on the disk mill, rice husk was used as the model of destructed material. Inside the disk mill, the impactor was mounted on a disk with the same position of impactor. Impactor diameter was varied to ensure the size reduction profile of rice husk. The process was also done by a certain rotation speed. The results showed that the disk rotation speed and diameter of the impactor affected the particle size distribution. The faster rotation of the disk mill resulted in the more nano-sized particles produced. The larger diameter of the impactor was used, the greater the particle size distribution produced. This influence can be used as a consideration for getting optimum condition for milling process.