SIEVES/SIFTERS/SEPARATORS/SCREENING EQUIPMENT 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. 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.


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. 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.’’ www.hewittrobins.co.uk


Market Success For CRS Kinetic Flow Screen


Blue Group is experiencing considerable success with the CRS KF 44-18 Kinetic Flow Screen for which they are an appointed distributor. The innovative “flip flow” technology of the KF 44-18 allows waste management and recycling specialists to extract even greater volumes of recyclable fines material from waste streams, after primary screening, for blending or further separation as single size saleable material. This increased extraction of recyclables also reduces tip-to-landfill volumes, saving transport costs and landfill tax while greatly contributing to environmental preservation. Blue Group reports that they have delivered numerous units to recycling companies in the past few months, especially the recently introduced mobile version (see picture).


The CRS KF 44-18 Kinetic Flow Screen


Kinetic Flow technology is specifically targeted at the waste recycling industries but also has a unique versatility which spans many sectors and materials including fine screening in gypsum, compost, coal, soil, ballast and woodchip screening, separating fines material of 0-70mm size and most difficult sticky


26 Bulk Solids Today


materials. Based on the well-proven kinetic flow principle, the patented design produces a unique and aggressive “pitch, throw and action” which results in clean fines material, no matter how wet or sticky. Screening area is 1.80m X 4.4m, providing a high throughput and benefiting from high quality components for durability and efficiency and the self- cleaning polyurethane screen elements are easily replaced. The crawler mounted model provides site mobility for moving the unit to the material, rather than the other way round.


However, for MRFs, the modular design of the static version of the unit allows quick installation and set-up for retrofitting to existing plants to enhance the output.


Maximising recovery of valuable useable material, the CRS KF 44-18 Kinetic Flow Screen has a range of applications, including: Fine mixed C&D Waste (0-80mm); mixed organic waste; damp and sticky materials such as powders, soils and sand; shredded mulch or organic materials. www.bluegroup.co.uk


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