Screening for Top Production
Eliminates need for slurry pond
Phoenix Process Equipment Co. has expanded the range of hydrocyclone options in its HG Separator line for aggregate wash plants. The mechanical separation system combines hydrocyclones with dewatering screen technology to produce a dewatered, marketable, solid-phase product from previously discarded fines slurry without using chemical flocculants or coagulants. The slurry is pumped into the hydrocyclone portion of the separator to recover target fines. The hydrocyclone underflow containing the captured fines then reports to a high-frequency dewatering screen, where vibratory forces dewater and convey the recovered material. The underflow from the screen is re-circulated to the hydrocyclones to eliminate loss of recoverable fines. For complete slurry pond elimination, the hydrocyclone overflow reports to a high-rate thickener and belt filter press.
The company now offers high-efficiency units that are said to produce sharper, finer separations throughout a wide range of capacities. According to the company, the separator can reduce slurry pond cleaning costs and create a potentially marketable product, and it can be upgraded to a complete fines dewatering system, which eliminates the need for a slurry pond.
The Screen Machine
Hydraulically adjustable screen angle
The Screen Machine Spyder 516T Portable-Tracked Screening Plant boasts myriad features such as a Caterpillar 312 undercarriage, 11-cubic-yard hopper that can be loaded from three sides, heavy-duty Grade 80 steel construction, a double-deck two-bearing screen, massive unibody structure deep-frame design, and the company’s patented Smooth Start technology. The unit’s screen box features a 5- by 16-foot double-deck two-bearing screen that reaches capacity matched to upwards of 600 tons per hour, depending on material specifications. The U.S. Grade 80 steel screen box features a heavy-duty, wear-resistant plate. The plant’s hydraulically adjustable screen angle adjusts from 8 to 20 degrees to match the screen angle to material for efficient screening. The top deck accepts wire cloth, punch plate, or finger screens, and the bottom deck accepts wire cloth, harp style, or finger screens. The plant can screen four different sizes of material (with optional grizzly) simultaneously and can be controlled via wireless remote control movement and operation. It is also pairs well with the company’s 4043T Impact Crusher.
New construction provides better durability
Unified Screening & Crushing’s Twin Wire Screen was designed for high-impact, top-deck applications. Typically used for 2-inch openings and larger, the company claims this new construction provides greater durability, while maintaining maximum open area. High carbon or Tufflex wire is recommended and can be made to fit any screening area. Special tooling has been designed for various wire diameters to ensure uniform openings on a flat screening surface with a strong lock-crimp construction. In some tested applications, field observations uncovered a 3/8-inch wire outperforming a 5/8-inch diameter, single-wire construction.
Telsmith is introducing a new line of inclined vibrating screens at ConExpo-Con/Agg. The Vibro-King TL series replaces the Vibro-King and Specmaker lines, boasting longer service life, reduced maintenance requirements, and lower operating costs. The new screen features a TL shaft assembly with a revolutionary “Never-Wear” seal design that eliminates contact seals, reducing maintenance and extending service life. All TL shaft assemblies use wide-series bearing and polished shaft-bearing journals for longer life.
Screen plates with 10 times the wear life
The QT-PLUS Screen Plates from Jadco do not stretch, can be designed in any shape, have tapered holes, and are always consistent in sizing accuracy, according to the company. The QT-PLUS material provides wear-resistance to outlast any carbon steel plate or wire cloth, and the company says that it provides up to 10 times the wear life. The perforated screens will not stretch, so no re-tensioning is required. If a specific screen size or hole opening is needed, the company’s CAD team is able to provide unique blueprints for that client’s needs.