Rollouts May 2011
Mobile impact crushing
The new MR 110 Z EVO unit from Kleemann made its first appearance in North America at ConExpo-Con/Agg. The impact crusher features a new material flow concept — the discharge chute under the crusher is 4 inches wider than the inner width of the crusher, and the subsequent discharge belt is another 4 inches wider than the discharge chute. Rapid flow of the material keeps it away from the critical area under the crusher and reduces wear. An independent vibrating double-decker pre-screen is said to improve the cost efficiency of EVO units. A newly designed crusher bypass includes changes to its geometry and form to boost performance and reduce wear. Optional new and improved screening units are available and are more than 44 percent larger in size than those on previous units, allowing for tonnages of between 350 and 450 tons per hour.
Sandvik displayed its QI440 track-mounted impact crusher, which features a fuel-efficient, 330kW, Tier 3-compliant, C-13 diesel engine and a Sandvik CI322 impactor. Fed via a two-deck, pre-screen, the crusher is a four-hammer, open-style rotor that discharges onto a secondary pan feeder. The unit has an operating weight of 54.9 tons and is 50.9 feet in length when in transport configuration. Additional features include a variable-speed primary pan feeder for controlled and continuous feed, an independent grizzly and underpan feeder for reduced blockages, and an optional recirculation conveyor.
Tracked HSI primary
Inertia Machine Corp. rolled out its 5066 Tracker Primary HSI Crusher at the big show. The track-mounted model is designed to deliver up to 700 tons per hour while offering trailer-free transport due to a design that includes the unit’s own removable axle. The crusher features a large 14-cubic-yard, non-heaping hopper and boasts a 60-inch by 18-foot variable-speed drive, vibrating grizzly feeder. Combined with a 42- by 64-inch feed opening, the impactor allows the handling of oversize material while preventing bridging. The 42-inch by 38-foot discharge conveyor with motorized head pulley is rated up to 1,500 tons per hour. The unit is powered by a John Deere 400-horsepower, Tier III diesel engine and a 125 kW generator.
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