Abstract
Indented cylinder separators are often used to complete the grading of rice, but there is radial segregation which affects the screening performance. To clarify the cause of its radial segregation, the rice data required for simulation were first obtained through experiments, and then discrete element method (DEM) was used to analyze the segregation process of whole and broken rice at low filling levels. The results showed that with the intensification of segregation, the screening efficiency decreased gradually. Increasing the filling level will increase segregation. Segregation core to form in the center of the left half of the bed. The radial segregation mechanism of whole and broken rice is “percolation”, which is the result of a combination of particle size and shape driving forces. This study is helpful to improve the screening efficiency of rice and provides some reference for exploring segregation of multi-component mixture with multi-attribute differences.
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