Skip to main content

Versatile crushing and screening equipment

Work on a key link in the United Arab Emirates is benefiting from the use of equipment supplied by Sandvik Mining and Construction. The firm supplied key equipment for the Salalah bypass project, a 32km road link that will span the entire length of Salalah City as it runs from Raysut in the east, towards Ayn Razat in the west.
February 13, 2012 Read time: 3 mins
The Sandvik crushing and screening plant is proving highly versatile at processing materials for a key highway project in the United Arab Emirates
Work on a key link in the United Arab Emirates is benefiting from the use of equipment supplied by 325 Sandvik Mining and Construction. The firm supplied key equipment for the Salalah bypass project, a 32km road link that will span the entire length of Salalah City as it runs from Raysut in the east, towards Ayn Razat in the west.

The four lane bypass has been built to international all weather standards and is designed to ensure a smooth flow of traffic through Salalah city onto the Salalah-Thamrait-Nizwa highway system. The new road provides an improved road for the growing numbers of heavy vehicles in the area, due to port upgrades, a free trade zone and other industrial developments. When fully operational in 2011, the bypass will be capable of handling all heavy freight in and out of the port together with the industrial zone at Raysut, easing traffic along the existing Raysut-Salalah road.

Due to the vital importance of the development, the construction of the Salalah bypass has been placed on a fast-track footing by the Supreme Committee for Town Planning, part of Oman's? The contract was awarded to local construction firm, Oman Building and Contracting Company, with Omani engineering consultancy, National Engineering Office (NEO), being the design consultant for the project.

A key feature of the success of the Salalah bypass has been the processing of materials during the construction of the highway using mobile screening and crushing equipment from Sandvik Mining and Construction. The Sandvik fleet has been supplied through the Sandvik dealer in the region, Al Fairuz Trading & Contracting.

A principle reason for the use of mobile machinery was that crushers and screening systems were needed at various locations in the project to produce a range of base materials, and aggregate. The equipment has proven versatile, productive and reliable, allowing processing of any suitable indigenous materials to be found in the vicinity of various road construction segments.

One of the impact crushers used is the QI430. This unit combines Sandvik's expertise in the design of track-mounted mobile crushers, with proven ability to manufacture durable and highly productive impact crushers. Fed via a two deck pre-screen, the crusher is a four hammer open style rotor with a diameter of 1,150mm, and a width of 1,330mm that discharges onto a secondary pan feeder. The plant is also equipped with a primary feeder and a separate two deck pre-screen. The screen used in the project is the QA450, which introduces a triple deck screen box, with an extra side conveyor, enabling it to produce up to a total of four product materials plus one oversize from the tipping grid. Designed for maximum productivity combined with accurate product sizing, the QA450 incorporates a large feed hopper, a pair of large screen boxes and extended conveyors that afford massive stockpiling capabilities.

The material being processed is known as wadi- gravel, which consists of a mixture of limestone and basalt. The material possesses a feed size of 0-500mm, with the QI430 and the QA450 being used as a crushing and screening train to produce: 0-5mm, 5-12mm, and 12-22mm gradings. These two pieces of equipment are currently working two 10-hour shifts/day, averaging an impressive production of 250tonne/hour over the last 12 months.

A third machine is used to produce a 0-50mm grading, the Sandvik QI340 with product recirculation system. This is a large heavy duty tracked crusher incorporating the Sandvik QI340 impact crusher.

For more information on companies in this article

Related Content

  • HAZEMAG's Italian job
    February 6, 2012
    The Di Maso quarry company in Italy has invested in a HAZEMAG crushing concept, and in addition to the rugged primary impact crusher with its active hydraulic control system, a wobbler feeder has been added to relieve the load on the crusher and to ensure uniform feeding. The Type AP-PH 1414 impact crusher's latest active hydraulic control system offers a facility where the impact aprons are locked in position during operation to guarantee a uniform, high-quality product. However, if tramp metal enters the
  • High productivity for Sandvik’s new jaw crusher
    June 16, 2020
    Sandvik’s productive UJ440i jaw crusher is said to be heavy-duty in construction, allowing it to operate on the toughest sites. This mobile unit is said to be able to work reliably in all climatic conditions.
  • Fast flyover removal with specialist demolition equipment
    July 12, 2012
    An overcrowded Indian flyover was removed in record time using specialist demolition equipment, as Patrick Smith reports Demolition of the landmark Lalbaug flyover south of central Mumbai has been completed and work on a new bigger bridge has started in India's largest city. Although the 38-year-old Sant Dnyaneshwar (Lalbaug flyover) two-lane, one-way traffic artery was serviceable and used by to 15,000 vehicles/hour, there were daily traffic jams and environmental consequences. Despite the complex and dema
  • Showcase for Terex Finlay I-140 impact crusher
    January 23, 2017
    Terex Finlay is showcasing its I-140 direct drive ø1,270mm x 1,240mm horizontal impact crusher with variable speed and the proven Terex CR032 chamber, which is said to give excellent reduction ratios and high consistency of product shape. A significant engineering approach being introduced in this model is the material flow through the plant, which has been significantly improved by increasing the width of components as the material moves through the machine. The I-140 features an advanced electroni