AggreSand Launch in Australia coming soon

TEREW Washing Systems (TWS) officially launched the Aggresand modular aggregate and sand washing plant in September 2013. The modular wash plant brings together aggregate and sand washing on one modular chassis, producing three aggregates and two sands on one machine.

The official unveiling and live demonstration took place at the Annual Dealer Forum in Ireland.

The main objective in developing the Aggresand plant was to meet our customers’ needs for a modular system that can efficiently wash and produce multiple aggregates and sands within one machine.

The Aggresand plant’s design achieves this by providing a throughput capacity of 250tph as well as having quick set-up time allowing the plant to be erected in one day. Through the expertise of dedicated TWS engineers, the newest modular plant is also designed for efficient transport by fitting into six shipping containers.

During the packing process at the TWS factory the containers are loaded and arranged in a specific manner to help speed up installation time on site. Quick set up time is also achieved through essential ‘plug and play’ plumbing/pipework and electrical wiring, compared to traditional methods where this work is carried out onsite after installation.

The first Aggresand machine is working successfully in Dowling’s Quarry, Abbeyleix, County Laois since July 2013 and is processing to date glacier sand and gravel material formed during the ice age with consummate ease. Quarry owner, Humphrey Dowling, commented:

“We are delighted to be the first quarry to install and operate the world’s first ever Aggresand, which truly is a superb washplant. This plant ultimately replaced an older Terex washplant that was installed 13 years ago, so far I am very impressed with the functionality of the Aggresand. The plant arrived on site and was installed in approximately ten hours.

I like the idea of the modular aspect, allowing it to be moved to another site later if the throughput currently being achieved on the plant is excellent and the quality of the aggregates and sands being produced is very impressive.

The high performance two deck vibrating grid allows us to feed material directly from the face of the quarry, at 200mm, large material is scalped off while the minus 50mm material goes straight into the wash plant. This eliminates the need for expensive prescreening of the feed material.”

The Aggresand plant at Dowling’s Quarry is fitted with a 12’ double deck vibrating grid with 100mm bofor bars and 50mm woven wire mesh, this particular plant separates 0-40mm to the wash plant that gives 3 aggregate materials and 2 sand. Reject material from the live head is stockpiled and later crushed when accumulated into stockpiles of 50,000 ton, then crushed into 6f2 material via a terex Crusher.

On the bottom deck the <50mm product is delivered by the feeder belt to a 1000mm wide electrically driven inclined feed belt.

This wide conveyor is fitted with an integral wash box to pre-soak the material and delivers the material to the full width of the screen thus utilizing the full screening area.

The 16’x5’ (4.9m x 1.5m) three deck screen is electrically driven producing an aggressive 6mm throw and is fitted with eight individually controlled spray bars on each deck.

The sized and rinsed aggregates produced by the screen are stock piled on three integral 9m stockpilers.

The dual sand plant includes two rubber lined centrifugal pumps and two heavy duty rubber lined cyclones which remove silt (<75 micron).

The silt-free sand is delivered to a split 12×5 screen to produce two grades of dewatered (12% moisture) silt-free sand. The sand stockpilers are radial powered through electrical wheel drives and have an impressive stockpiling capacity of 350m3.

The end products are used as follows:

6-14mm (503 drainage material)
14-22mm (503 concrete material)
22-40mm (505 drainage material)

0-3mm sand is used for plastering and block making the 0-5mm sand is used in the production of concrete.

Overall there is zero waste from the plant and minimum sand being lost to ponds.

Mineral Washing Systems (MWS), in conjunction with Terex Washing
Systems, will be holding an Open day in nSW in July 2014 to showcase the first Aggresand with Pre-wash system in Australia.

For further information, contact:

MWS toll free on 1800 777 300
or visit the website
www.mineralwashing.com.au

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