- Mon June 02, 2014

GreyStone’s Portable Dewatering Screen Keeps Moisture Low

The portable Aggre-Dry dewatering screen from Columbus-based GreyStone Inc., features a flume that allows an operation to retain all of the fines discharged from the dewatering screw, according to the manufacturer....

- Wed December 04, 2013

GreyStone Introduces Aggregate Equipment

GreyStone Inc., based in Columbus, Neb., will debut its new aggregate equipment, which includes the unibody fine material washing screw and a portable dewatering screen with an Aggre-Dry style flume in Central Hall C5, booth 52372....

- Thu November 14, 2013

GreyStone Introduces New Aggregate Equipment At CONEXPO-CON/AGG 2014

GreyStone Inc., based in Columbus, NE, will debut their new aggregate equipment at CONEXPO-CON/AGG 2014 in Central Hall C5, booth 52372. The company’s new products include the recently released Unibody Fine Material Washing Screw and a portable dewatering screen with an Aggre-Dry® style flume....

- Fri September 27, 2013

GreyStone Offers Three Models of Dewatering Screens

GreyStone Inc., based in Columbus, Neb., offers three models of dewatering screens — the DS-488 (4-ft. by 8-ft. [1.2 by 2.4 m]), DS-6010 (5-ft. x 10-ft. [1.5 by 3 m]) and DS-7212 (6-ft. x 12-ft. [1.8 by 3.6 m]) — to handle a variety of capacities and efficiently dewater up to 300 tons (272 t) per hour....

- Fri July 19, 2013

Greystone Aggre-Spec Classifying Systems, Controllers

Aggre-Spec sand classifying systems, manufactured by Columbus, Neb.-based GreyStone Inc., produce up to three products, including two spec products, from natural or manufactured sand blends. Aggre-Spec classifying systems allow producers to scalp excess water, reject excess material, separate and size sand particles and re-blend up to two industry-standard spec products simultaneously....

- Fri August 07, 2009

Automated Log Washer From GreyStone Offers Efficiency, Product Quality

The automated log washer from Columbus, Neb.-based GreyStone Inc. increases efficiency and lowers labor costs for aggregate producers, keeping the quality of aggregate consistent while saving operators time and money....

John Bennington - Tue June 09, 2009

Dewatering Tips to Keep Sand Operation Flood-Free

When fine material screws fail to remove enough moisture from their material, many sand operations decide to introduce a dewatering screen into their material flow. The producers who own them already know that dewatering screens typically require little maintenance....

- Tue September 16, 2008

GreyStone’s Screen Tower Allows Producers to Go Portable

GreyStone Inc., based in Columbus, Neb., offers a new fully portable self-erecting screen tower for sand, gravel and aggregate producers that move classifying equipment from site to site at least once per year....

- Mon June 02, 2008

GreyStone Conveyor Systems Built for High Production

GreyStone Inc., based in Columbus, Neb., offers a full line of conveyor systems with lengths ranging from 50 to 200 ft. (15 to 61 m), custom-designed to meet specific application needs. GreyStone’s conveyor line includes standard- and heavy-duty portable conveyors, radial stackers and tower radial stackers that deliver material flow capacities from 300 to 1,300 tons (272 to 1,179 t) per hour....

- Mon December 03, 2007

Aggre-Dry Screen Washes, Dewaters Aggregate Material

The Aggre-Dry Washer — GreyStone Inc.’s 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 (22 kW) to wash and dewater up to 100 tons (90.7 t) per hour....

- Fri February 09, 2007

GreyStone’s Log Washer Produces Efficiency, Consistency

GreyStone Inc.’s new automated log washer assists log washer operators keep output quality consistent without having to make frequent manual adjustments to the angle of inclination. The automated log washer with a hydraulic support system comes with a PLC sensor that detects the tonnage going through the unit....