De-Stoner - vacuum Type

Spectrum De-stoners are used for separating heavier materials like stones, glass, metal etc., from food grains and other dry granular material. The principle used is stratification of the product into heavier and lighter fractions by forcing air through the bed of material.

The vibration of the deck is achieved by means of unbalanced vibratory motors mounted at the centre of the machine. The Vibrating deck pushes the heavier material 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.

The inclination of the vibrating deck and the stroke of eccentric motion can be finely adjusted to achieve the optimum degree of separation. A wide variety of deck screens are available to suit specific applications. All adjustments can be made with ease and minimum of operator training.


  • Can be connected to a central aspiration system.
  • Provided with clean product and stone discharge spouts.
  • Windows provided for product viewing.
  • Deck inclination and stroke can be finely adjusted.
  • Easy control of air flow and feed rate.
Description VC-50 VC-75 VC-100 VC-150
Powered Required in HP 0.66 1 1 1.5
Capacity Per Hour in Tonnes 0.75-1 1.5-2 3-4 5-7
Nett Weight in Kgs 250 300 350 450
Gross Weight in Kgs 350 425 500 625
Shipping Volume in m3 1.5 2.25 3 4.25
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