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Equipment Spotlight: WASHING AND SCREENING

A look at some of the latest technologies for aggregate operations

July 18, 2019  By Rock to Road Staff Report

Rock to Road showcases latest technologies for washing and screening.

CDE’s patented Combo encompasses five processes: feeding, sizing, sand washing, stockpiling and complete integrated water management. This innovation is a technological response to the challenges faced by materials producers in the construction, industrial sands, mining, and C&D waste sectors. It has been designed with a focus on transferring greater reliability and efficiency benefits to customers. Offering a turnkey solution that delivers unrivalled control of in-spec washed products from a wide range of feed materials. In brief, the Combo creates enhanced reliability and efficiency offering rapid onsite set-up, reduced start-up costs, the ability to process a wide range of feed materials (both natural sand and crushed rock), lower power consumption, a smaller footprint and unrivalled accessibility for maintenance.

ELRUS Aggregate Systems
EL-XTRA engineered self-cleaning screens from ELRUS Aggregate Systems stay clean longer and don’t need to be changed as
often. Innovative polyurethane strips allow individual wires to vibrate independently of each other at high frequencies. The amplified screen action allows faster stratification, better bed depth, and virtually eliminates blinding and pegging, making them ideal for applications with wet and/or sticky material. Benefits of self-clean media include: rapid fines removal; almost completely eliminates the need to stop and clean screens; and the crusher runs more efficiently because fines are removed. The EL-XTRA solution is available in an extensive range of openings.

Superior Industries
Among Superior’s complete line of washing and classifying equipment, is its new Spirit Sand Plant, a modular system that delivers cost-efficient sand production, fines recovery, and dewatering via a single, compact plant. The custom-configured plant combines Superior’s Helix Cyclones with a dewatering screen, sump tank, and slurry pump. By manufacturing its own cyclones and dewatering screens, Superior says it ensures a plant is configured with the right cyclone and screen for the specific sands and fines recovery cut points.


KPI-JCI and Astec Mobile Screens
Producers can efficiently process aggregate material with the portable Series 1800 screening and washing plants by Kolberg-Pioneer. These plants can rinse and size multiple stone products while simultaneously washing, dewatering and fine-tuning a single sand product to meet almost any gradation. The company’s knowledgeable experts have designed the screening and washing plants with flexibility and profitability in mind, creating configurations to fit any operation. These industry-leading plants are available with inclined or horizontal single-, double- or triple-shaft screens with two or three decks all on a single chassis. Additional equipment, like a blademill, can be added for versatility.

Terex MPS
The Simplicity SI Series screens are intelligently engineered with common footprints and wide spacing between decks, allowing for increased ease of maintenance and quick media changes. Built with a robust drive mechanism and oversized bearings, these units can handle large tonnages and a wide variety of applications. Utilized as wet or dry screens, these units have adjustable stroke and speed combinations to fit a customer’s specific application.

Haver & Boecker Niagara
Haver & Boecker Niagara offers the rugged, efficiency-enhancing N-Class vibrating screen to optimize crushing plants and screening operations through its ability to screen as much as 5,000 tons per hour. The Niagara N-Class is ideal for tough jobs, such as scalping and classifying ores, minerals, stones, sand and gravel in aggregates and mining applications.The equipment is built with an advanced four-bearing design that minimizes structural vibration and maintains constant g-force even through fluctuating material feed rates. The N-Class offers one to three screen decks and features an advanced single-eccentric shaft design.

The stickier the feed material, the bigger stroke needed from your mobile screen. Metso’s ST2.8 mobile screen has the biggest stroke on the market to make it a dependable and versatile choice for top soil, demolition waste, river gravel, and even sand applications. Ready in minutes and available with a washing screen attachment, the ST2.8 is an easy addition to your multi-stage crushing operation.

A series of four new MOBISCREEN EVO aggregate classifying plants from Kleemann complements the company’s mobile jaw, impact and cone crushing plants with easy mobility, flexible application options and high output. Now available for North America, Kleemann’s four new classifying screens are the track-mounted double-deck classifying screens MS 702i EVO and MS 952i EVO, and the triple-deck classifying screens MS 703i EVO and MS 953i EVO. The two plant sizes have a screening area in the upper deck of 75 or 102 sq. ft., respectively. As with the crushing plants, the classifying screens with their convenient transport dimensions and short setup times optimize the productivity of contractor crushing operations. The MS 702i/703i EVO achieves a maximum output of 386 t/h and the MS 952i/953i EVO an hourly output of up to 551 tons.

A high production screener with capacities of 400 tph, the Keestrack C6 is available in a double and triple deck configuration capable of making a 3- or 4-way split. Each deck is equipped with 8.1 m2 of screening surface for high quality and high capacity processing. The optional wash plant results in the production of three washed products on the double deck or four with the triple deck option. These, in addition to load sending hydraulics and hybrid options, make the C6 one of the most cost-effective screening solutions in the market today.

The new McCloskey S250 Screener rises above all industry standards, positioned as one of the world’s largest track mobile screener. The 22 x 6 heavy duty high energy two-bearing, three-deck screenbox delivers more true screening area, and the 225 Hp CAT engine or 218 Hp Volvo engine deliver all the power needed for maximum production. Available in double or triple deck models, the S250 features 900mm (36”) wide side conveyors and 800mm (32”) wide auxiliary conveyors for higher material flow. The auxiliary conveyor also features rollers on the S250, rather than sliding plastic and solid frame, offering less friction. This class leading screening area, along with its high energy screening action, ensure that the McCloskey S250 is the superior choice for aggregate material screening.

McLanahan knows the importance of uptime, so the UltraWASH is designed with ease of maintenance in mind. The Eze-Riser feature works with the unit’s pump service trolley to enable safe and efficient pump maintenance, such as changing the impellers or replacing the case liners. A foot pedal for lifting the discharge pipe aloft offers the clearance needed for the pumps to roll out on the trolley service platform unrestricted. The unit’s Fines Forward Slide is able to divert a portion of raw fines into the coarse sand processing stream. This balances the downstream process to optimize plant capacity. Alternatively, by substituting the last row of fine material screen panels with coarse material screen panels, the Fines Forward Slide will allow alterations of the proportions of fine and coarse decking areas above, while still preventing the loss of coarse material into the fines processing stream.

With the Flex-Mat Sensor, a valuable and easy to operate vibration data measurement tool, users can review results and fine tune their screen machine without shutting down the equipment. The app-controlled vibration analysis sensor enables readings of screen box vibrations within seconds and generates a report that can be sent or reviewed. The simplicity of the system’s design ensures valuable and actionable data without the requirement for a plant shutdown to calibrate the sensor.

The Powerscreen Chieftain 2200 is designed for operators who require large volumes of high specification products with maximum versatility. It has a revolutionary patented drive system which allows switching between 2 and 4 bearing with bolt-on parts. The maximum variability of the Chieftain offers improved capabilities over its class rivals, especially when trying to make high specification aggregate. It’s two highly versatile, double deck screenboxes provide a total screening area of 19.5m2. The Chieftain 2200 screen is the first Powerscreen machine with a double deck screenbox.

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