De Stoner Machines

"Spectrum De Stoner" or grain separators are a highly functional machinery and have found several applications such as separating heavier materials like stones, glass, metal etc. from food grains and other dry granular material.

The principle that lies behind its functioning is the stratification of the product into heavier and lighter fractions by introducing air through the bed of material. This is possible if there is a means of pressure fans located in the body of the machine, below the vibrating deck.

The vibrating deck pushes the heavier material which is in contact with the deck upwards towards the stone discharge spout. The lighter material flows down the inclined, vibrating deck and exits through the clean product spout.