Washing and classifying equipment can solve myriad problems ranging from product dryness to fines recovery

Therese Dunphy

February 1, 2016

Classifying tank smoothens out feed fluctuations

Designed to remove large volumes of excess water from feed material, EIW Classifying Tanks smooth out feed fluctuations and remove excess sand particles for a consistent in-spec product. Recently, the Mark VI computerized sand re-blending control system was introduced for this equipment. It makes stockpile calibration easier and faster, allowing for a varying number of controlled products, as well as calibrated tons per hour forecast of the products produced. Producers using the Mark VI system maintain tighter control of their products’ fineness modulus (F.M.). It can handle up to two tanks simultaneously and is said to make calibration simple, fast, and easy.

Eagle Iron Works | www.eiwllc.com

Ruggedly built wash screens

Elrus Aggregate Systems wash screens have been developed with more than 40 years of industry experience and design evolution. They feature heavy-duty side panel and carry deck construction, rotated cross tubes to maximize screen open area, integral wash bars, and easily replaceable inlet chutes and discharge lips. Units are available in a range of sizes from 3 feet by 6 feet to 8 feet by 20 feet. Elrus can custom design or configure to meet individual requirements.

Elrus | www.elrus.com

Sustainable alternative to traditional washing systems

The Hydro-Clean washing unit, from Haver & Boecker, is said to effectively clean deleterious material from aggregate, recycled, and other minerals while reducing water consumption by as much as 75 percent compared to traditional log washers. Taking feed material as large as 6 inches into its vertical drum, the Hydro-Clean employs high-pressure nozzles, rotating at 90 rpm, to spray as much as 90-percent recycled water on the material with pressures as high as 2,000 psi. The washer comes in three model sizes — the HC350, HC1000, and HC2000 — that process 18 to 360 tons per hour, depending on the application.

Haver & Boecker | www.havercanada.com

Sand plant increases production, improves consistency

McLanahan Ultra Sand Plants are said to help producers increase sand production, produce a drier product, and improve product consistency. Ultra Sand Plants combine Separators, dewatering screens, and a slurry pump to provide a 3- to 5-percent higher product yield over traditional fine material screw washers. The manufacturer says they produce a drier product and do not have the inherent inefficiencies of screw washers. Ultra Sand Plants operate efficiently, sending unwanted fines to waste streams and keeping product sized fines in the product piles. They also have the ability to separate and combine sand fractions, allowing users to blend coarse/fine sands as needed to meet product specifications.

McLanahan | www.mclanahan.com

Dries and de-slimes sand

The Phoenix/Kisa Bucket Wheel is designed for recovering, de-sliming, and dewatering sand and other granular materials. Many designs are available with the wheel diameter and bucket width determining the solids handling capacity, while the surface area of the slurry bath defines the hydraulic capacity. These bucket wheels are uniquely designed for solids recoveries of 99 percent or more with very low power requirements, even from dilute slurries such as dredger spoil. Dewatered solids are readily conveyable and stackable, having residual moistures that are said to be considerably lower than from dewatering screws.

Phoenix Process Equipment Co. | www.dewater.com

Air classifying plant is completely mobile

Sturtevant says its Whirlwind Mobile Air Classifier is the world’s first and only 100-percent mobile air classifying plant with integral collapsible conveyors. It is said to effectively remove excess fines from aggregate products bringing materials formerly considered waste materials into specification. The unit’s dry separation process eliminates the need for water typically used in washing plants, which is especially important in remote areas where water is not readily available. The Whirlwind Mobile Air Classifier is easy to transport with a rugged chassis frame and a heavy-duty, tri-axle suspension. It has three conveyors that hydraulically fold for transport and unfold for set-up.

Sturtevant | www.sturtevantinc.com

Combination machine saves material from the waste pond

Integrated into its Aggre-Dry Dewatering Washer, Superior says its fines recovery technology saves valuable material normally lost to a waste pond. The technology reroutes minus 25 mm material fines from an onboard dewatering screen back to the integrated sand screw. Depending on production rates, the extra material rerouted to the saleable stockpile can add tens of thousands of dollars to a sand producer’s bottom line. The Aggre-Dry Dewatering Washer is a single machine integrating a fine material washer and a dewatering screen. Sand processed through the equipment is stockpiled with a moisture content of just 8 percent, meaning the saleable product requires no drying time and can be accessed immediately.

Superior Industries | www.superior-ind.com

Wash plant’s triple-deck screen has complete spray system

Terex MPS says its TXW620HT horizontal wash plant features the highly efficient Cedarapids TSH 6-foot by 20-foot triple-deck screen with complete spray system. The highly portable plant incorporates a high capacity 36-inch by 25-foot twin screw. The unit also features an under-screen fines collection flume, washout, and hinged slurry box. The water spray system covers all three screen decks, slurry box, flume, and washout. Standard plants have top and middle deck over chutes and a bottom deck cross conveyor for multiple product capabilities. A middle deck cross conveyor and electrical panel are available as options.

Terex Minerals Processing Systems | www.terexmps.com

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