Design and Evaluation of Mango Stone Decorticator

摘要

A mechanical mango stone decorticator was designed, fabricated and tested. The machine consists of the frame, feeding chute, cylinder assembly, concave, discharge outlets, blower and drive unit. Cylinder speed (200, 250 and 300 rpm), feed rate (150, 200 and 250 kg/h) and moisture content (9.62, 15.02 and 17.89 % d.b.) were taken as the study variables. The best set of conditions under which the decorticator could be operated was at a cylinder speed of 250 rpm, feed rate of 200 kg/h and at 9.62 % moisture content (d.b.), where the machine was found to have decortication efficiency and kernel breakage of 93.91 % and 68.12 %, respectively. All the selected variables were found to have statistically significant effect on the performance indicators.