Dewatering Screens and Screws: Down to the Last Drop
McLanahan manufactures dewatering screens and screws that can be used in combination to supplement existing screw installations, depending on design criteria and particle size. A double-wash process can be performed by using the screw for de-silting and adding sprays on the screens.
GreyStone, Inc. says its Aggre-Dry Washer combines a fine material screw and dewatering screen to reduce moisture content in material to as low as 8 to 13 percent, while using only 30 horsepower to wash and dewater up to 100 tons per hour. The unit’s 0.25-mm screen opening allows material to build to a depth of 14 inches on the screen to squeeze out additional moisture.
From single to double and from fine to coarse, screws offer options that meet plant needs.
KPI-JCI’s fine material washers are engineered with high-efficiency drives, resulting in low-horsepower requirement and reduced operating costs, while increasing throughput.
Eagle Iron Works
Both single and double screws are available from Eagle Iron Works. Single-screw sizes range from 20 inches by 22 feet to 72 inches by 38 feet; double-screw washers range from 36 inches by 25 feet to 72 inches by 38 feet.
KPI-JCI says its 500-ton-per-hour, coarse material washers are engineered to adapt to changing needs. Both single and twin-spiral designs can be reconfigured with numerous bolt-on paddle and flight arrangements to meet specifications.
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