Hewitt Robins supply 1500tph Washing Screen to Norway
Hewitt Robins have recently supplied a 3.0m wide x 9.6m long triple deck washing Screen to Norstone’s biggest plant situated in Norway.

Norstone is part of the Heidelberg Cement Northern Europe and they recently completed phase 2, upgrade project for a new screen/rinse system at Tau. Tau quarry currently produces 2.3 million tons per year of aggregate and with the new upgrades they look to increase production by 500,000 tons of additional railroad ballast.
Hewitt Robins 2QV-14 3.0 x 9.6 Triple Deck Washing Screen

The new Hewitt Robins 2QV-14 3.0m wide x 9.6m long Triple Deck Washing Screen allows them to do this. The heavy duty screen was installed by Agdermaskin – Hewitt Robins partner in Norway who also designed and installed the stand alone washing plant which is beside Tau’s ship loading facility in order to be able to rinse the railroad aggregates or other products before being transferred into the ship loading system.

Ship loading System

The screen is currently handling 1500tph of railway ballast plus over 10,000 liters of water/minute in the feed and from the sprays. The screen is required to wash the material prior to being loaded onto the ship and also take out -20mm waste. The top deck separates at 45mm, 20mm middle deck and 4mm bottom deck using Tema Isenmann WS85 heavy duty modules.

The Hewitt Robins screen is constructed of 15mm thick side plates which include additional 15mm thick doubler plates around the vibrator units. The heavy duty crossmembers are spaced at every 600mm to be able to withstand the large amounts of aggregates and water and the total weigh of the machine is over 30,000kgs.

1500tph Hewitt Robins Washing Screen

The 2QV-14 vibrating unit is oil lubricated and consists of 4 pods incorporating 2 off 140mm bearings in each pod (8 bearings in total) giving the customer increased bearing life. The four Quad-V Pods are timed together using a timing belt on the no-drive side and the pods are coupled together through the centre of the screen using 2 cardan shafts. The cardan shafts take up less space than conventional shafts and vibrator tubes which allow there to be additional access between the decks for easier maintenance when changing modules.

Bjørn Ingvalstad – Technical Manager – Norstone commented:

''The new stand alone washing plant incorporating the heavy duty 2QV-14 Hewitt Robins 3.0m wide x 9.6m long 3 deck washing screen allows us increase our production at Tau and supply a higher quality product. The installation went well, on time and on budget. Operationally the screen is handling the required capacities and gives us an exceptionally clean product. We would like to thank Agdermaskin and Hewitt Robins for their commitment and professionalism which allows us to meet our customers needs."

Hewitt Robins International Ltd, Huntingdon Court, Huntingdon Way, Measham, Swadlincote, Derbyshire, DE12 7NQ, United Kingdom, Tel: +44(0)1530 272799, Fax: +44 (0)1530 272787, Email: hril@lineone, Website: www.hewittrobins.co.uk

Registered in England: 1552299 Registered Office: Hewitt Robins International Ltd, Huntingdon Court, Huntingdon Way, Measham, Swadlincote, Derbyshire, DE12 7NQ