Kleemann's mobile plant train demonstrates a strong performance in granite

Previously, a stationary plant in St. Florian near Schärding, Austria, produced track ballast and road foundation material. Schärdinger Granit Industrie GmbH has now been equipped so as to be able to satisfy the strong demand on the market. A mobile plant train consisting of two Kleemann crushing plants and a screening plant have been assisting in mining granite rock since December 2021. The efficient crushing capacity of the train and the clever logistics of the company go hand in hand and ensure remarkable output.

Good references were the clincher for the machine combination

The company approached Martin Friedl, Managing Director of Wirtgen Austria, with the requirement for greater output, especially in the area of the 0–63 mm end products. "In addition to the transportability of the machines and the requirement to get all machines from a single source, the customer also had an ambitious tonnage per hour in mind. Two variants were possible – a plant train with the Kleemann PRO crushers or the smaller EVO crushers and various screening plants as an addition," explains Martin Friedl. It was perfect that such machine combinations were already running in quite a similar form in Austria for other customers. Gerhard Altendorfer, Managing Director of Schärdinger Granit Industrie GmbH, and his team were therefore able to inspect the output and handling on site, as well as discussing their experiences with the plant managers there. "That was, of course, a huge advantage and a very good decision-making aid," sum up Gerhard Altendorfer and Albert Wirkert. After various on-site inspections, it was certain that Kleemann plants were to be used – namely a powerful PRO plant train, with which around 330 tonnes an hour is feasible.

MOBISCREEN MSS 802 EVO: Versatile and powerful

When it came to the screening plant, Gerhard Altendorfer decided on the more versatile variant, the MOBISCREEN MSS 802 EVO screen for coarse elements."To all intents and purposes, a classifying screening plant would also have performed very good work here. However, the customer also wants to produce 0–300 mm armourstones with the plant in future," explains Martin Friedl. The more flexible and powerful model, which copes with feed material up to 500 mm, was therefore chosen.

High efficiency: Plant train directly on the wall

The quarry company has developed good logistics and a very efficient procedure for the position of the plant train and quarrying. The mobile machines work directly along the wall. This results in very short material paths – from chipping off practically directly to the trucks of customers.

Easy to operate and automated processes

Just a few hours after setup, the plant supplied its first end products. Manager Michael Gschaider is impressed with the intuitive SPECTIVE operating concept with which the Kleemann crushing plants are equipped, saying that "the whole system is unbelievably user-friendly. The machine practically tells me what must be done. That makes operation really very simple."

The Manager is also keen on the option of line coupling: "It works really amazingly." Each machine sends signals to the upstream and downstream devices in the event of faults or overfilling. This automatic regulation and monitoring stabilises the entire process. The Continuous Feed System (CFS) feed control ensures that the crushers are utilised to optimal capacity.

Well-equipped for the future with Kleemann's PRO plants

When it comes to the drive concept, the PRO plants are equipped with powerful diesel-electric drives. Fuel consumption is gratifyingly low and the option of an external power supply makes the devices fit for the future. Long-term, smooth operation has also been considered in other areas – and thus the company also procured a comprehensive wear part range at the same time as the plant was delivered. Kleemann expert Martin Friedl is sure that, "due to the current market situation with constantly increasing prices, Schärdinger Granit has thus positioned itself well for the coming years."

Equipment of crushing and screening plants aimed at maximum availability

Schärdinger has equipped the crushing and screening plants with maximum availability and sustainability in mind. For example, the hopper units are equipped with wear-resistant elements, which increases the service life of the hopper. Additional equipment was also relied on for the crusher unit of the jaw crusher – the plant features a crusher unblocking system with a frequency converter. This allows packed material to be loosened without a problem, without someone having to climb into the crushing chamber. "It's really impressive how the plant starts powerfully even with a full crusher – no matter whether in the normal or the opposite direction. Due to the various speeds, we can optimally adapt the crusher to the application," comments a pleased Thomas Stöckl, a machine operator at the quarry. Thanks to the equipment of individual plants with the optional premium lighting, work can also be done in the evening or early morning – with additional safety for the operator.

Good support from the Wirtgen Group subsidiary was a deciding factor

For Schärdinger Granit Industrie GmbH, these are the first Kleemann plants ever. The very positive references from other companies have convinced Managing Director Gerhard Altendorfer to rely fully on Kleemann for the new major investment. It was not only the very good and energy-efficient performance of the plants that counted here. At least as important to the operator was the trusting collaboration with the Wirtgen Group subsidiary – with the knowledge that fast, uncomplicated support is available if you ever get stuck.