R700S Crushing Asphalt on a Glacier

Rockster Impactor R700S in Airy Heights!

Use of mobile crushing technology at a sea level of 2800 meters

The company Richard Grüner GmbH from Tyrol is currently doing maintenance and repair work at the foot of the glacier „Tiefenbach“ in the ski resort Sölden / Hochsölden using their new impact crusher R700S from the Austrian manufacturer Rockster Recycler. It is a very robust machine with compact transport measurements and low dust or exhaust emission. The perfect crusher for a challenging jobsite on a sea level of 2,800 meters where it’s used to process asphalt for the local owner of the lifts and funiculars „Ötztaler Gletscherbahn GmbH“.

R700S Asphalt Glacier 2800m “It is essential to work fast and efficiently in the very few summer months where the glacier is accessible”, says Richard Grüner. “The low air pressure and oxygen were a big challenge for man and machine, working on a sea level of almost 3,000 meters is just not the same as in flat terrain,” he says. “Though the Rockster crusher did a very good job, we received 100% optimum final grain with a size of 0-22mm using the closed circular with screen box and return belt.”
To reach the jobsite on the glacier it was necessary to pass the road via serpentines, this was no problem at all for the compact machine. The low weight and optimum transport dimensions were an important purchasing aspect for Grüner, since the R700S can be brought to their construction sites in the high alpine areas in a short period of time.

Out of season Richard Grüner and his team use the R700S for many jobs in the municipal area, mainly for crushing demolition debris for reuse in construction project as a valuable raw material.

Experience after 6 months of operation

The new impact crusher R700S was a very important investment in the future for Richard Grüner GmbH. Mr. Grüner is very satisfied after more than 6 months of operation with the crushing plant. Thanks to the optional screening system consisting of the vibrating screen RS73 in combination with the patent-protected double-functional return / stockpile belt RB65 the R700S provides a 100% defined final grain. Through a simple lever movement the return belt can be used as stockpile belt to receive one more final fraction. In the rapidly growing area of demolition waste recycling, this flexibility and high quality grain are important competitive advantages. The track-mounted R700S has been specially developed for applications where space is limited - such as in the case of inner-city construction sites or narrow delivery paths. Due to the optimal dimensions and low weight, the R700S can be transported quickly and easily from one construction site to the next. For the company Grüner, it is the perfect combination of compactness with maximum performance and allows flexible recycling operations on asphalt, concrete and other demolition debris, as well as processing of natural stone.

A further decision criteria for purchasing the R700S was the easy maintenance and optimum accessibility for all service and repair work. The large openings also allow optimal ventilation of the engine pack and cooling. The drive system is located in the rear of the machine and is sound-proofed. This noise reduction is also a valuable advantage on inner city job sites.

For the company of Mr. Grüner, with more than 35 employees in Tyrol's Ötztal, the investment is also an important step into a new business. Construction waste recycling and landfilling of defined fractions for reuse in the construction area is a growing industry. “It helps protecting natural resources and saving money,” is Mr. Grüner convinced. “However, politicians and the Austrian law should even make more efforts on establishing appropriate directives to better support this burgeoning industry.”

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