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28 • ROCK products • May 2016 www.rockproducts.com One of two new impact crushers from Kleemann – the Tier 4 final-compliant Mobirex MR 110 ZSi EVO 2 – was shown at AGG1 2016 in Nashville. The MR 110 ZSi EVO 2 is the slightly smaller version of the MR 130 ZSi EVO 2. EVO 2 represents the continuing evo- lution of the successful EVO Contractor Line, with additional benefits in terms of economy and operational safety. These new impact crushers are differ- entiated by their size and productivi- ty; the MR 110 ZSi EVO 2 has a crusher inlet opening of 44 in. (1100 mm), and the MR 130 Zi EVO 2 a crusher inlet opening of 52 in. (1300 mm). These provide feed capacities of up to 350 or 450 tph, respectively. The "S" indicates a Mobirex unit with optional, highly productive second- ary vibrating screen with extra-large screening surface mounted on the discharge conveyor. This secondary screen unit can produce spec material, potentially eliminating the need for a separate screen. Impact crushers are ideal for process- ing demolition materials to spec, such as recycled concrete aggregate (RCA) and reclaimed asphalt pavement (RAP). The feeding unit has hydraulically fold- ing hopper walls and locking system, which speeds setup time significant- ly. A vibrating double-deck prescreen between feeder and crusher eliminates fines from the product flow before they ever enter the crusher, reducing wear and cutting fuel costs. The new EVO 2 Mobirex mobile impact crushers utilize direct drive crushers and electric drives for the vibrating feeders, conveyors, belts and the pre- screen. This permits high fuel efficiency and allows optimal loading. These crushers feature a new inlet geometry that allows even better pen- etration of the material into the range of the rotor. Also, the wear behavior of the new C-form impact ledges has been improved to such an extent that the edges remain sharper longer, lead- ing to improved material shape. The rotor ledges are held securely by a new and extremely user-friendly clamping system, which means that they can be changed even quicker, and thus con- tribute to greater plant uptime. Outstanding performance is made pos- sible in part by the extremely efficient direct drive, with which the machines are equipped. A latest-generation die- sel engine transmits its power almost loss-free directly to the flywheel of the crusher, via a robust fluid coupling and V-belts. This drive concept enables enormous versatility, as the rotor speed can be adjusted in four stages to suit different processing applications. The Kleemann Continuous Feed System (CFS) manages a more equal loading of the crushing area, in which the con- veying frequencies of the feeder trough and the prescreen are adapted inde- pendently of each other to the level of the crusher, thus significantly boosting performance. Portable Plants: The Path to Production Here are Some of the Latest Developments in Portable Plant Technology. By Mark S. Kuhar and Josephine Smith PORTABLE PLANTS Kleemann Mobirex Impactor Highly Productive