Pits & Quarries
Equipment spotlight: Screening and washing
By Rock to Road staff
By Rock to Road staff
June 4, 2018 – Rock to Road checks out some of the latest screening and washing equipment in the marketplace.
Terex’s Cedarapids CRS618 high frequency screen is available in modular and portable configurations. Key advantages include the new screen with wire tension system that utilizes high frequency vibration for fine screening, patent pending conveyor support and unique hinged service platform that makes screen changes easier and safer. The unique self-aligning feed distribution plate requires no adjustment when changing screen operation slope. The sliding leg provides easy screen slope adjustment from 35° to 45° in 2.5-degree increments. Maintenance friendly features include hand access ports for the second deck; tool-less feed end curtain; and remote grease lines.
Two key features on Superior’s dewatering screen result in maximum moisture removal. Deeper bed depth removes more moisture in the final product; and urethane sidewalls remove moisture from the top and sides of the bed, otherwise left with no place to go. The combination of these two features leaves behind a final product with just 8 to 12 per cent moisture content. That means no drying time is required and your material is instantly sellable, without having to spend any time in a stockpile. Superior manufactures its dewatering screens in several sizes for production up to 400 tph. Each unit is equipped with a +/- 5° adjustable screen angle.
The Keestrack K6 scalping screener is a veteran for tracked mounted mobile scalping screeners. Keestrack introduced this machine in 1996 – the first manufacturer to design a track-mounted direct feed mobile screener. Designed to work in the most difficult of applications, the K6 comes with an 8-cubic-metre robust hopper, heavy steel aprons and variable speed controls. The K6 can separate three fractions at once at a capacity of 600 tph with feed material up to 800 mm in size. The 15” x 6’ double deck offers a total screening surface of 8.1-square-metres on each deck, making it perfect for pre-screening and precision screening. The K6 has all the bells and whistles that come with the Keestrack name: mobility, fuel efficiency, low emission engine, and upscale monitoring.
Kleemann is expanding the Mobiscreen EVO series by a total of four new classifying screens: 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 7 or 9.5 square metres. As with the crushing plants, the classifying screens with their convenient transport dimensions and short setup times meet the requirements of contractor crushers. The MS 702i/703i EVO achieves a maximum output of 350 tph and the MS 952i/953i EVO an output of up to 500 tph. Kleemann also places the focal point on safety with the Mobiscreen EVO screening plants. A mobile control panel that can be installed at three different points on the machine operates the screening plant. All plant functions are started automatically – without each side discharge conveyor having to be activated individually. Data on machine operation can also be read off at the operator panel.
KPI-JCI and Astec Mobile Screens
Efficiently process aggregate material at any location with KPI-JCI and Astec Mobile Screens’ portable Series 1800 screening and washing plants. The plants can rinse and size up to three 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. Patented PHB models are the largest portable plants offered by American manufacturers. These self-contained, self-erecting plants reduce set-up and tear-down time, giving producers more uptime and increased profits. KPI-JCI is able to provide a single source for all processing needs. It offers a full line of supporting equipment and everything from individual, portable plants to turnkey systems.
The CDE AquaCycle A900 thickener, with a capacity of 900m³/hour joins the CDE leading water recycling suite of products to bridge a gap in the market.
The AquaCycle water management system provides an efficient alternative to water extraction from natural sources by recycling up to 90% of processed water, ready for immediate re-use by the system. The AquaCycle A900 thickener becomes the sixth product in the CDE AquaCycle thickener range. Feed capacities across the AquaCycle range now span from 100m³ per hour to 1,500m³ per hour, with the A900 filling the gap for operators who want a feed capacity higher than 600m³/hour but lower than 1,500m³/hour. Processing 900 m³/hour and with a sludge capacity of 45 tph, it is intended to give clients looking for a median alternative to the A600 and A1500 models. The AquaCycle A900 is highly resistant to wear: the wedge wire screen removes lightweight contaminants from the recycled water, protecting pumps from blockages. Downtime is significantly reduced as a result.
Haver & Boecker
Haver & Boecker offers the skid-mounted Hydro-Clean 1000 Wash Plant as a complete solution. In addition to a Hydro-Clean 1000 washing system combined with a Tyler L-Class vibrating rinse screen, Haver & Boecker now offers semi-portability by mounting the complete system on a custom skid structure. The opportunity to purchase the three components together saves operations months of time they would have spent on designing and building a skid structure for a wash plant. The system processes as much as 200 tph of sellable product with short retention times, uses minimal water and power and delivers maximum serviceability.
The design principle of the Lokotrack ST2.8 mobile scalping screen is simple: to optimize capacity in demanding scalping and to minimize unprofitable time on site. Designed with 150 years of industry knowledge, the ST2.8 has the biggest eccentric throw on the market to make it the best unit for the screening of topsoil, demolition waste, river gravel, and even sand applications. Bi-Power is available when operating with external electricity.
The Powerscreen Chieftain 2200 is designed for operators who require large volumes of high specification products with maximum versatility. The Chieftain 2200 has two highly versatile double deck screenboxes which provide a total screening area of 19.5 sq. m. The maximum variability of the Chieftain offers improved capabilities over its class rivals, especially in sticky scalping applications.
User benefits include a quick set-up time (typically under 30 minutes) with hydraulically folding conveyors and track mobility. Its high aggression screenboxes handle dirty, sticky material with ease. Features and benefits include an output potential up to 650 tph (715 US tph); two double deck screenboxes; radio controlled tipping grid; integrated high capacity variable speed belt feeder; heavy duty single shaft screenboxes with adjustable stroke, angle and speed; hydraulic screen tensioning (bottom deck); screen walkway and access ladder; and hydraulic folding conveyors with excellent stockpiling capacity.