"Spectrum De-stoners" or grain separators are a highly functional destoner 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.
It is possible to individually adjust the inclination of the vibrating deck, speed of eccentric motion, feed rate and the air flow in order to achieve the optimum degree of separation. We have a wide variety of deck screens available with us to suit specific applications. All adjustments are easy and require minimum operator training.