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Profitable and Sustainable Crushing & Screening Equipment at bauma
bauma’s and Keestrack’s focus is on sustainability, alternative drive systems and providing solutions for the aggregates, recycling and mining industry. Keestrack will launch 2 completely new machines at bauma. The R2, high performing and very compact track mobile impact crusher, has been designed to complete Keestrack’s product range of impactors. The R2 is easy to operate within city centres where high flexibility and mobility are essential. In a lot of European cities there is a need for pure electric plug-in construction equipment. With the ZERO-drive, a full electric plug-in drive version, without any combustion engine onboard, Keestrack provides the ideal solution. The new impactor has a capacity up to 150 t/h. The crusher design features are often similar to the award winning bigger R3 impactor. The hopper (3 m3) with integrated vibrating feeder (3300 x 810 mm) and pre-screen (1250 x 810 mm) also has a asymmetric design to feed the material easy into the inlet (860 x 730 mm) which is equipped with a replaceable entry beam. The R2 impactor, fully equipped in closed circuit with a 1200 x 3040 mm single deck after screen, magnet separator and windsifter has a total weight under 27 t and a transport length of 13,05 m, making it a very agile impactor. The return conveyor of the closed circuit can also swivel outside to be used as a stockpile conveyor for oversize. As on all Keestrack equipment, maintenance has been reduced by design, using drive and return drums which are greased for life, is just one of the examples. The diesel/hydraulic R2 version is driven by the new DEUTZ TCD 5.2 4 cylinder engine, which is very efficient, powerful and clean, and is able to run on biodiesel. The R2 is also available in ZERO drive version, which is full electric plug-in and has no combustion engine. Keestrack will also introduce the brand-new high-capacity 3-deck classifier to complete the product range for high capacity precision screening. The C7, with a capacity up to 600 t/h, is equipped with a triple deck screen box of 5450 x 1800 mm with interchangeable screen meshes, which can be changed quickly. The C7 is specifically designed for accurate and high-capacity precision screening for sand and aggregates. The walkways on each side of the screen box give perfect service and maintenance access. The C7 has no support legs, resulting in quick set up times. The C7 3-deck classifier is available in conventional diesel/hydraulic drive, but Keestrack’s R&D department already mention their plans to make it available in ZERO, full electric plug-in drive, in near future. Also, the 2-deck version is foreseen to come to market soon. Keestrack, recently added the first tracked shredder, the P3, to its product range. This compact twin-shaft shredder is equipped with 2 heavy duty axles that can easily be changed within the hour. In different setups, the shredder can be used for various applications such as construction waste, mineral waste, biomass, green waste, logs and roots, waste wood, industrial & household waste, plastics, light metal waste, tires etc. The 14,5 t Keestrack P3 tracked mobile shredder features a tillable loading platform to feed the shredder. The shredder has a feed opening of 1589 x 1200 mm and a shaft diameter of 700 mm. The torque of 90,000 Nm per shaft provides a massive power of 180,000 Nm. The shaft speeds are 45 and 25 rpm, and the rotation varies according to the program selected. The shredder features an automatic release system by reversing the direction of rotation. The P3 is available with options such as a magnetic separator, to separate precious metals, remote control, after screen, working lights and a fuel pump. It provides easy access for service, maintenance and repairs. The engine compartment is very accessible, with the new very efficient, powerful and clean DEUTZ TCD 5.2 engine. Keestrack’s B5, available in 3-drive versions: conventional diesel/hydraulic, hybrid plug-in and ZERO full electric-drive, is a compact heavy duty jaw crusher used for primary crushing in quarrying and mining applications. The hopper (5 m3) with heavy duty folding hopper walls with hydraulic locking system, is easy to load by excavator and wheel loader. The vibrating feeder (2300 x 1000 mm) automatically adjusts the feeding material to the crusher to ensure the load capacity of the jaw crusher is optimal (80%). The long independent 2-deck pre-screen (2300 x 1000 mm) ensures a high crushing capacity while reducing wear of the crusher. The pre-screened fraction(s) can go through the crusher bypass or can be separately stockpiled by the optional side conveyor. The jaw crusher has a feed opening of 1110 x 750 mm and a feed size up to 600 mm. The stroke of the swing jaw can be adjusted for hard stone or recycling applications. To remove blockages the jaw movement is reversed. The Closed Side Setting (C.S.S.) is from 45 to 180 mm, even on worn jaws. The hydraulic gap settings can be changed via a wedge system. During operation the automatic wear recovery is active every 50 working hours, which guarantees a consistent quality of your end-product. The wear recovery can also be set manually, if needed. Maintenance and repairs are facilitated by the design of the B5 through accessible walkways and doors and panels on all sides of the machine. Also, the hydraulic sliding frame ensures good service access under the feeder and scalping unit. The jaw crusher has 3-piece cheek plates which make replacements easier. Replacement of the jaws is fairly simple due to the easy accessible jaw plate top locking system. The B5 is equipped with a Drop off engine/gen-set compartment like many other Keestrack crushers. The engine can be placed besides the machine in less dusty and vibrant conditions. Maintenance is much easier when having the compartment placed at ground level.
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The newly designed rotor, with a width of 840 mm and a diameter of 920 mm, is made of Hardox steel. The rotor has the same design concept as the bigger R3, R5 and R6, designed to minimize wear. Rotor speed can be adjusted by a hydrostatic drive to finetune the desired grain size. The impact aprons can be serviced from the top which facilitates service maintenance.
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