GreyStone Aggre-Dry® Washer
This innovative sand dewatering unit combines a fine material screw and dewatering screen to produce sand and gravel products with a moisture content as low as 8 to 13 percent—by weight—while using only 30 HP to wash and dewater up to 100 TPH. A standard GreyStone inclined single-spiral fine material washer initially dewaters the material while the rotation of the dewatering screw scrubs it to remove surface dirt. The action of the screw flights sends the sand up the inclined tub as the vibratory dewatering screen further removes moisture from the sand. The combined process produces a caked, dry sand product that neither an inclined dewatering screw nor a vibratory screen can separately achieve. The Aggre-Dry Washer is available in sizes to handle production of 100, 200, 300 and 400 TPH.
