Rock Products

MAY 2018

Rock Products is the aggregates industry's leading source for market analysis and technology solutions, delivering critical content focusing on aggregates-processing equipment; operational efficiencies; management best practices; comprehensive market

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42 • ROCK products • May 2018 High-performance and enhanced aggregates processing technology built into Kleemann products from Wirtgen America, like the Tier 4 final-compliant Mobirex MR 130 Zi EVO2 impact crusher shown at AGG1 2018 in Houston, and the smaller MR 110 Zi EVO2, are boosting productivity and product quality for operators. These mobile impactors can be equipped with optional, highly productive secondary vibrat- ing screen with extra-large screening surface mounted on the discharge conveyor. This secondary screening unit can produce spec material, potentially eliminating the need for a separate screen. The feeding unit has hydraulically folding hopper walls and locking system, which speeds setup. A vibrating, independent double-deck prescreen between hopper and crusher eliminates fines from the product flow before they ever enter the crusher, reducing wear and cutting fuel costs. These crushers feature: • A new inlet geometry, which allows even better penetra- tion of the material into the range of the rotor. •  An extremely efficient direct drive, with which the machines are equipped. •  A latest-generation diesel engine transmits its power almost loss-free directly to the flywheel of the crusher. • The Kleemann Continuous Feed System (CFS) manages a more equal loading of the crushing area. • The MR 130 Zi EVO2 is equipped with the new SPECTIVE control system. The use of clear symbols makes all plant functions recognizable at a glance. • Hydraulic Gap Adjustment. •  With these new Mobirex impact crushers, the fully hydraulic adjustment capability of the crushing gap per - mits greater plant uptime, while improving quality of end product. Wirtgen (Kleemann), CT Series jaw crushers from Weir's Trio crushing brand are offered with an extensive range of sizes suitable for mobile or stationary jaw crushing applications. The CT Series jaw crushers incorporate a steeply designed toggle seat for the efficient nip angles and high production rates. The primary models offer hydraulically adjusted wedges for quick and easy adjustments to closed side settings. All CT Series jaw crushers incorporate a fixed jaw die configura- tion with a wrap-around design that protects the crusher frame. CT Series jaw crushers are heavier in class than many other jaw crushers on the market. The extra weight leads to improvement of their mechanical capabilities. CT Series jaw crushers have a steep nip angle that provides a more aggressive bite. The steep nip angle and optimized toggle help to the reduce the machine resonance which allows the CT Series jaw crushers to run smooth and steadily, improving the life cycle of mechanical and hydraulic parts. Weir (Trio) brands/trio/crushing-equipment Weir (Trio) Williams Crusher Roll crushers are simple in design and construction, long lasting, economical and versatile, according to Williams Crusher. Roll crushing surfaces operate at a fixed distance apart, as opposed to the continually changing distances in a jaw or cone crusher. Product size is much more consistent. Both over- sized pieces and fined are minimized. Wet, sticky materials are more easily handled. The rolls act as flywheels, contributing to smooth operation and efficient use of power. Roll crushers are low in profile and relatively easy to install. They can be fed with a minimum of headroom, or even choke fed. Adjust- ments are simple. Internal parts are readily accessible. Typical feed mate- rials include bauxite, cement clinker, chalk, cinders, clay, coal, glass, gypsum, limestone, burnt lime, rock salt, sand- stone, shale, sulfur ore, sea shells and sewer sludge clinker. Single-roll crush- ers, sometimes called lump breakers, can also be used for breaking frozen or agglomerated materials. Williams Crusher, Wirtgen (Kleemann) Crushing Feature

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