High-quality recycling material

Efficient construction material processing with new compact SBM impact crusher Remax 450

Over the past 90 years, the Lehnen Group has grown into a powerful all-rounder in construction and recycling. The new acquisition of an SBM Remax 450 – the Austrian premium impact crusher of the latest generation – has now played a part in this. Franz Lehnen GmbH & Co. KG, with over 270 employees, is a reliable and competent partner with a focus on civil engineering and road construction. But the spectrum at Lehnen is much wider: the majority of the required building materials are produced by the company’s own quarry and recycling operations, among others.


In order to be able to organise the entire material chain from A to Z – from raw material extraction and refinement to the finished end product – on its own responsibility, Lehnen relies on first-class manpower and machine power. “Particularly in processing, this includes plant technology that can do everything itself to meet our demands and those of our customers,” reports Lehnen plant manager Thomas Müller. Because Lehnen had the best experience with an MFL crusher, the choice for the new acquisition fell on the premium class from SBM. And because Moerschen Mobile Aufbereitung is not just a pure sales dealer, Lehnen was able to test the smaller SBM Remax 300 impact crusher model on a rental basis without any risk.


After the compact plant met all the requirements in terms of end products, the need for even more throughput capacity of this product quality was quickly awakened. Therefore, the choice fell on the latest model in the Remax family, the track-mounted impact crusher SBM Remax 450, which was only presented in Austria in May 2021. As the latest product generation, it closes the gap between the proven Remax 400 and Remax 500 models in terms of performance. Equipped with active double-deck pre-screening, the nominal capacity of the impact crusher has been increased by about 50 t/h to 450 t/h. The crusher is fed by a hydraulically folding impact screen. The crusher is fed into a hydraulically folding 8 m³ feed hopper with vibratory feeder. The 1260 x 800 mm feed opening to the crushing chamber means that there are virtually no limits to the crusher’s versatility: The Remax 450 accepts feed sizes up to 800 mm and delivers final grain sizes ranging from 0-90 to 0-22 mm. Below the crusher is an innovative three-stage fine discharge/bypass flap that directs bypass material to the 1300 mm discharge chute below the impact crusher. The available options, such as a removable single-deck post-screening unit with a swivelling return/discharge belt, an air classifier and a hydraulically adjustable magnetic separator, make the SBM impact crusher such a complete process chain that it is unparalleled on the market.


But this is not the end of the features that made Lehnen choose the Remax 450: including the options, the transport weight remains below 50 tonnes, while the compact transport dimensions allow uncomplicated “one-piece” transport by drop deck or three-axle dolly. And this is an eminently important feature, because in addition to the stationary construction material recycling plant, Lehnen also offers the service of on-site processing. With mobile crushing and screening plants, construction waste is processed into high-quality recycling material directly on the respective company premises or at the site of the construction project.


Another forward-looking feature rounds off the overall package: In addition to the extremely efficient integrated diesel-electric drive, the Remax 450 impact crusher can be operated with all plant functions via a powerful 300 kVa generator in optional mains operation. Moerschen sales specialist Jörg Schreiber knows the qualities of the concept: “Especially in these times of skyrocketing fuel prices and the growing desire for ecological sustainability, the electric drive option is more relevant than ever. Of course, we are happy to be able to provide our customers with such a technology.”


The concept is then also a perfect fit for a user like the Lehnen Group, where the production and use of recycled building materials is also consciously understood in the corporate philosophy as active environmental protection. Because: with every cubic metre of recycled building material, an equal amount of primary pipe material is conserved and at the same time a cubic metre of landfill space is saved. “We stand by this motto,” says plant manager Thomas Müller, “but we also get something out of the SBM drive option in practice.” This undeniably increases the potential applications, for example in terms of emission-free operation on inner-city construction sites or through minimised leakage cracks in water protection areas. “We also see here quite directly the possibility of being able to be a decisive step ahead of the competition for our customers at times also through the use of the most modern technologies.”




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