A research on determination of separability of mixture of wheat and vetch seeds

In this study, for determining of separability of mixture of wheat and vetch seeds, some physical and aerodynamic properties such as dimension, geometric mean diameter, diameter of a sphere of the same volume, sphericity, projected area, critical speed, friction coefficient and optical properties were obtained. While the dimensions of the seeds are significantly different from eachother, the values of the geometric mean diameter and diameter of a sphere of the same volume arenot so various. Moreover, it was determined that the sphericity, seed weight, projected area, critical speed of the vetch seed was bigger than the wheat seed. However, for the wheat seed, the static and dynamic friction coefficient and the coefficient of aerodynamic drifting values were found higher than vetch seed. L*a*b values of the wheat seed were also found higher compared with vetch seed. Separation efficiency for wheat and vetch was obtained as 66.7% and 95.6%, respectively.