A cracking time for a Rockster Duplex R1200D/R1100DS crusher

Rockster’s DUPLEX system combining jaw and impact crusher has been hard at work at the Casaccia gravel quarry at the base of Switzerland’s Maloja Pass. The quarry – a part of the Hartmann Group - offers a range of gravel and sand types. Many construction companies from the Graubünden area rely on the certified products such as sand, gravel and grain mixtures. The increasing demand for recycling products such as concrete and mixed demolition granules is also supplied by the Casaccia quarry. It recycles
May 1, 2018 Read time: 2 mins
Rockster’s DUPLEX system combining jaw and impact crusher has been hard at work at the Casaccia gravel quarry at the base of Switzerland’s Maloja Pass.


The quarry – a part of the Hartmann Group - offers a range of gravel and sand types. Many construction companies from the Graubünden area rely on the certified products such as sand, gravel and grain mixtures.

The increasing demand for recycling products such as concrete and mixed demolition granules is also supplied by the Casaccia quarry. It recycles construction and demolition waste as a valuable resource for base layers or road construction. More than 100,000 tonnes of material are processed annually.

The Rockster Duplex plant R1200D/R1100DS jaw/impact crusher plays an important role in the flexibility of the gravel quarry. The crusher can be quickly modified from a jaw to an impact crusher and vice versa. This allows the quarry to react quickly to the different demands of their customers.

They primarily chose the Rockster plant because of the Duplex system,” explained Lorenz Biedermann, Swiss distribution partner of Rockster. “It allows them to define the final grain faster and better, thus improving the quality and providing a noticeable competitive advantage."

For a 100% defined final grain, the optional screening system for the R1100DS/R1200D is used. Any oversize grain goes back into the feed hopper via the return belt.

For primary crushing operations in natural stone processing or for a desired final grain with very low fines, the Rockster plant is used as an R1200D jaw crusher. The R1100DS impact crusher is primarily used for finer crushing and recycling of concrete or demolition material.

Processing is done not only in the gravel quarry, but directly on the construction sites of the Hartmann group, owner of the quarry. This requires mobility, said Biedermann.

"Another advantage of the Rockster crusher is the low weight and compact transport dimensions. As a result, the crushing plant can be easily transported to a wide range of construction sites and put into operation quickly," he said.

Materials

Related Content

  • Rockster crushers help Austrian company Polixmair boost efficiency
    July 7, 2016
    "Greater flexibility, higher performance, faster implementation of large projects," is how Ferdinand Polixmair described the challenges of the increasingly fast-moving mineral processing business. "We can handle up to four major projects in parallel,” explained company owner Ferdinand Polixmair, whose company in Gmunden in upper Austdria has eight employees. “We have the team and the machines available. Moreover, we have no regional restrictions, we cover the whole of Austria." Polixmair had two of
    Read More
  • Rockster machines operating in Tanzania extraction operation
    May 14, 2018
    Rockster’s DUPLEX System is being used in an extraction operation in Tanzania. The PB Mining Company in Tanzania selected Rockster’s 2-in-1 machine for crushing highly abrasive rock. The extraction firm was formed in 2014 and specialises in the exploration of lead glance, named Galena, the natural mineral form of lead sulphide. This is the most important ore of lead and usually contains about 1–2% silver, a byproduct that far outweighs the main lead ore in revenue. Because of its low melting point, it is e
    Read More
  • Rockster machine performing in Turkish quarry
    January 26, 2018
    Crushing equipment from Rockster is playing a key role in the efficient production process at a quarry site in Turkey
    Read More
  • Aggregate machinery makers raise the efficiency bar
    May 22, 2018
    Manufacturers of crushers and screens are making their equipment more efficient as well as quieter. Among new entrants into the jaw crusher market is the MC 120 Pro, from Writgen company Kleemann. It was launched last September at the industry trade fair in Homberg/Nieder-Ofleiden, Germany. Both the diesel-electric jaw crusher – operating as part of an interlinked machine combination additionally comprising the MCO 11 PRO cone crusher and MS 953 EVO screening plant – and the MBRG 2000 granulator showed off
    Read More

Highlighted Content