Page 49 - Hub Magazine Issue 56
P. 49

Washing &
Screening
The Armstrong Group invest in their fourth Dernaseer Mobile Washing Plant
Bolton-based Armstrong Group who operate five quarries across the North West and Cumbria have recently purchased their fourth DWP450 mobile washing plant from Dernaseer.
The DWP450 mobile washing plant provides sand and gravel producers with a truly mobile, high capacity washing system. The highly versatile and portable washing plant features a triple-deck 20’ x 6’ (6m x 1.8m) inclined washing screen capable of producing one or two washed sand products and three washed aggregates, along with a cyclone sand processing unit incorporating a rubber- lined slurry pump, sump tank, single or dual rubber-lined hydro cyclones and a high-capacity dewatering screen. The sandbox and discharge chutes are rubber lined to reduce wear and noise.
The DWP450 is mounted on a heavy-duty triple-axle wheeled chassis with onboard catwalks providing access to the screen and sand unit. It is typically supplied with a mobile feeding and optional pre-screen unit, and wheeled stacking conveyors to provide maximum productivity and portability to the operator.
Armstrongs have installed these plants at their Montcliffe and Brinscall quarries where they produce quality sandstone sand and aggregates and at their Shap quarry, famous for its Shap pink granite sand and chips. In order to maximise stockpiling capacity in their washing plants they have incorporated the Dernaseer QK 32m long, galvanised conveyors which can stack up to 6000 tonnes in a single stockpile.
Also, with an eye on environmental sustainability and water conservation Armstrongs have installed Dernaseer water recycling systems at their Moncliffe and Brinscall quarries. The water treatment plants separate the suspended solids from the hydrocyclone overflow. The settled sludge is pumped to a storage lagoon while the clean overflow water is pumped back to the washing plant. This system recovers up to 90% of water used in the washing process.
Armstrongs CEO David Armstrong values the close relationship with Dernaseer stating recently that, “Dernaseer are a family run business just like ourselves. We deal directly
with the factory in Northern Ireland and they do exactly what they say they will do. The 450 is a no-nonsense washing plant that offers excellent value for our investment. It is cost- efficient to run so provides us with the lowest cost per tonne of material produced”.
Dernaseer will soon be launching the M4500 modular version of their popular washing plant. The M4500 combines aggregate washing and screening with sand processing on a galvanised modular support chassis. The first M4500 has already been sold to a customer in Bahrain and is due for commissioning in June.
Based in Dungannon, Co. Tyrone Dernaseer specialises in the design and manufacture of washing plants and screening equipment for the sand & gravel, quarry and recycling industries. In business since 1988 the company has extensive experience in providing the correct solution for washing and offers everything from a complete turnkey washing plant to any component from its range of washing equipment including screens, cyclone sand treatment plants, log washers, bucketwheel sand washers and water treatment plants.
For more information on Dernaseer Washing please email info@dernaseerwashing.com or call +44 (0)78 098 64869
www.hub-4.com May/June 2019 - Issue 56
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