The seeds and nuts are the produce of the harvest. While farmers collecting the seeds and nuts some stones will be entered unintentionally. Under normal operations the stones will be separated from general vibratory screens and gyro screens.
There are certain instances where the beans / seeds / nuts are of the same size make it difficult to separate the stones. Under such circumstances density cum gravity separator with aspiration system will be used to separate the stone from the same size of seeds and beans.
The beans / seeds / nuts will be feed from the top and air will be adjusted through the dampers to make it aspirational density separation and then gravity system used to isolate stones and discharged at opposite ends.