Screening for Top Production
Polydeck
Screen panels up to 50-percent quieter
The Flexi rubber screen panels from Polydeck Screen Corp. provide significant benefits to producers, particularly in applications involving high humidity and/or sticky material, according to the company. The rubber compound used in the screen panels enables the vibrating action of the screen deck to cause the surface of the Flexi panels to quiver, which prevents fines or other sticky material from accumulating. These rubber screen panels are up to 9 decibels — 50 percent — quieter than wire cloth or other steel media and are available in 1- by 2-foot size with openings that range from 1 mm (about 1/32 inches) to 38 mm (about 1-1/2 inches).
Unified
Wire and urethane screen support
Unified Screening & Crushing will introduce Superflow, an advanced combination of wire cloth and urethane support strip. This special hybrid product expands the company’s Unified Clean Screen product line, which includes wire cloth, rubber, and urethane screen surfaces and is designed to improve throughput.
GreyStone
Reduces moisture content in sand
The Aggre-Dry Fine Material Washer (FMW) Screen from GreyStone Inc. combines a fine material screw and dewatering screen to produce sand and gravel products with moisture content as low as 8 to 13 percent by weight, according to the company. The dewatering unit only uses 30 horsepower to wash and water up to 100 tons per hour. The manufacturer’s standard FMW screen initially dewaters the material, while the rotation of the dewatering screw simultaneously scrubs the material to help remove surface dirt. The action of the screw flights sends the sand up the inclined tub and ensures that the dewatering screen at the top of the flights will be evenly fed. The vibratory dewater screener then further removes moisture from the sand. This combined process produces a caked, dry sand product that neither an inclined dewatering screw nor a vibratory screen can achieve separately, according to GreyStone.
The screen has several unique features, including the following: a 0.25-mm screen opening reduces the amount of material that can fall through the screen. The feed from the screw allows material to build to a bed depth of 14 inches on the screen, squeezing additional moisture from the sand as the vibratory motors move it along the length of the screen cloth, which further reduces moisture content. The unit also reintroduces the throughs from the screen back into the screw’s washing process, where the screw portion of the unit pushes it to the dewatering screen — eliminating the need for pumps and cyclone sand separation systems and increasing the amount of saleable product.
Grasan
Features bolt-through construction
Grasan mobile and stationary wet and dry screen plants are available up to 8- by 24- feet in both horizontal and inclined configurations. Standard and custom designs are also available. The screens feature through-bolt construction, replaceable members, crowned screen decks, spring or wedge side tensioning, and walkways with access ladders. Feed boxes and discharge chutes have wear liners. The entire chute assembly may also be removed in one piece to make maintenance easier. The portable units are designed for high mobility with fast setup and are mounted on single-, tandem-, or triple-axle trailers.
Samscreen
Individually replaceable rods
The Samscreen Grizzly Finger Deck features a modular design, individually replaceable rods, and can convert to any deck. Heavy-duty grizzly decks also are available. The heavy-duty grizzly fingers are applicable for crusher feeders. The company also features custom piano wire screens, shape wire with urethane bucker strips, Maxwear high-tensile wire, and stainless steel, which are available for shipment within 24 hours.
