Kleemann’s Mobirex Impactor
First publishedin Aggregates Business International
Kleemann's Mobirex MR 110 ZSi EVO 2 impact crusher was a hit at WoA 2016
One of two new impact crushers from Kleemann – the Tier 4 final-compliant Mobirex MR 110 ZSi EVO 2 - was shown at World of Asphalt 2016 in Nashville, Tennessee.
The MR 110 ZSi EVO 2 is the slightly smaller version of the MR 130 ZSi EVO 2. EVO 2 is the continuing evolution of the successful EVO Contractor Line, with additional benefits in terms of economy and operational safety. These new impact crushers are said to be differentiated by their size and productivity; the MR 110 ZSi EVO 2 has a crusher inlet opening of 110cm, and the MR 130 Zi EVO 2 a crusher inlet opening of 130cm. These provide feed capacities of up to 350 or 450tonnes/hour respectively.
The ‘S’ indicates a Mobirex unit with optional, highly productive secondary vibrating screen with an 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 processing demolition materials to spec, such as recycled concrete aggregate (RCA) and reclaimed asphalt pavement (RAP). The feeding unit has hydraulically folding hopper walls and locking system, which is said to significantly speed setup time. A vibrating double-deck prescreen between feeder and crusher is said to eliminate 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 utilise direct drive crushers and electric drives for the vibrating feeders, conveyors, belts and the prescreen. This permits high fuel efficiency and allows optimal loading of the crusher.
These crushers feature a new inlet geometry which allows even better penetration of the material into the range of the rotor.
Also, the wear behaviour of the new C-form impact ledges has been improved to such an extent that the edges remain sharper for longer, leading 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 more quickly, and thus contribute to greater plant uptime. Outstanding performance is made possible in part by the 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, 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 conveying frequencies of the feeder trough and the prescreen are adapted independently of each other to the level of the crusher, thus significantly boosting performance.
For the optional ‘S’ version with secondary screen mounted, the oversize gradation return conveyor has been redesigned from the predecessor models, eliminating a vertical bend and integrating the transfer chute at the feed hopper.