High quarry production from Swedish facility

Skanska’s Hällevadsholm quarry is increasing production efficiency thanks to new crushing and screening systems. The quarrying facility has been supplying sized gneiss rock aggregate 1954, with production currently some 300,000tonnes/year.
October 2, 2014 Read time: 2 mins
Skanka’s Hällevadsholm quarry now features improved production using screening media from Sandvik

2296 Skanska’s Hällevadsholm quarry is increasing production efficiency thanks to new crushing and screening systems. The quarrying facility has been supplying sized gneiss rock aggregate 1954, with production currently some 300,000tonnes/year.

However new screening media from 2403 Sandvik Construction that was installed in 2012 has since improved production efficiency.

This newer generation WR Modular screening media offers greater wear life as well as accurate screening and versatility of operation.

The operation quarries a gneiss deposit which has increasingly proved to be popular with concrete producers due to the gneiss, unlike granite, emitting no radon.

Although the quarry has been able to operate highly efficiently, an increasing problem was found with regards to the screening media used. Due to the hard wearing nature of the gneiss, and the constant demands for accurate production, conventional steel wire mesh screens needed to be replaced frequently incurring costs for the new equipment and also for machine downtime.

The quarry operators contacted Sandvik for a solution and the firm suggested that the existing screen meshes be replaced with the WR modular screening media.

This system features an open production area greater than is found in conventional modular media. This is achieved through the use of cross-mounted flexible screen panels that generate a wave like cascade effect in the material bed. The design improves stratification, allowing undersize material to find a more rapid path to the screening surface.  Additionally the system optimises screening accuracy as the modular screening media utilises a fibre reinforced rubber screen membrane, which enables the use of thinner panels, with closer aperture spacing, maximising the open screening area.

The initial installation of the WR screening media at the Skanska Hällevadsholm quarry took two days, replacing the previous screen with the modular media on the existing VFS42/18-2 screen. Due to the success of the WR media Skanska Hällevadsholm has further adjusted the production flow as the system is easy to use, and versatile. Hence the quarry now also uses the WR media for washing 16-22mm aggregate to be used in asphalt, with 1,500-1,600tonnes of crushed rock now passing through the screen on a daily basis.

Materials

For more information on companies in this article

Related Content

  • New drilling and blasting technology aids efficient quarrying
    March 15, 2012
    Innovations in drilling and blasting and crushing and screening are bringing major economies of scale to aggregate production operations. Drilling and blasting is an area where new technology is offering major saving to quarrying companies. This is another important factor in the quarrying process, as inefficient drilling and blasting can have major financial repercussions.
    Read More
  • Innovations in aggregate production
    February 20, 2012
    Innovations abound in the aggregate production sector - Mike Woof reports. With road construction accounting for a significant percentage of aggregate production, developments in this industry are of major importance for the highway sector. Technical advances in aggregate production methods have pushed technological boundaries, resulting in cost/tonne reductions for products and improving operating efficiency for major producers.
    Read More
  • Sandvik the key to Raj Stones crushing success
    May 15, 2014
    Raj Stones, based in Fujairah in the United Arab Emirates, is said to have seen its aggregates production increase through the use of a Sandvik Construction CH660 cone crusher. Guy Woodford reports As an operator of one of the larger quarries in the UAE, Raj Stones has used a wealth of Sandvik technology to help reinforce its position as one of the premier aggregate suppliers in the region, now exporting material to Qatar, as well supplying the growing Emirates construction industry. At the heart of t
    Read More
  • Crushing system boosts quality sand production
    February 16, 2012
    A new VSI crushing system is helping Tarmac boost sand production at a key quarry in the UK. Manufactured sand is now being produced at the Tarmac Blashford quarry where a new VSI from Sandvik Mining and Construction is delivering product of high quality, specifically sized and shaped for construction purposes.
    Read More

Highlighted Content