Aggregates Manager Digital Magazine
Issue link: https://read.dmtmag.com/i/113147
Single and double screws High-open-area screen Derrick says its W-series dewatering screen uses a unique, high-open-area urethane screen surface coupled with the high G force of the vibrator to provide high-tonnage-rate dewatering, reaching 95-percent solids by weight for primary sand products. The screen features low horsepower and low footprint requirements. Derrick Corp. | www.derrickcorp.com EIW, LLC, formerly known as Eagle Iron Works, offers single- and double-screw units for washing, dewatering, and classification. Material is conveyed up an inclined tub with a close-clearance curved plate on one side of the conveyor shaft and a drainage trough on the other. This allows water to drain from the product as the spiraled shaft augers material up the inclined curved plate. EIW, LLC | www.eagleironworks.com Screw/screen combo The GreyStone Aggre-Dry is a combination fine material washing screw and dewatering screen in a single unit. The company says its compact design creates two benefits: 1) water is recirculated back into the water retention system, reducing water going to the stockpile by 50 percent; and 2) fines that get through the screen media are recycled back into the screw. GreyStone Inc. | www.greystoneinc.com Text INFO to 205-289-3782, or visit aggman.com/info The detail speaks volumes Accuracy, speed, safety. The Topcon GLS-1500 laser scanner makes non-contacting pile mapping and volume calculation easy and highly accurate. With maximum mapping detail, and its simple workflow, your increased efficiency will speak louder than words. Get all the details. topconpositioning.com/scanning Text INFO to 205-289-3782 or visit www.aggman.com/info Topcon_AGRM1112pg17.indd 1 10/16/12 1:00 PM AGGREGATES MANAGER March 2013 43