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Bespoke screens improve efficiency at Meriden Quarry

Double-deck wash screen

CMB International supply two custom-built replacement screens for Tarmac sand and gravel site

QUARRY plant manufacturers CMB International have recently replaced two aged screens with upgraded models at Tarmac’s Meriden Quarry, near Coventry, which currently produces around 20,000 tonnes of sand and gravel per month.

Assistant quarry manager Lea Woodward explained: ‘We were having issues with both screens and, after a successful quote, gave the project to CMB to replace them on a like-for-like basis. One of the screens was cable-suspended at the rear and it was important that both units were custom built to fit on the original mounting points.’

Having completed a thorough site inspection, CMB designed the two new bespoke screens, which were fitted and commissioned within the agreed time frame by SP Services.

Liam Holland, general manager of CMB International, commented: ‘We had to replace a Niagara triple-deck which was cable-suspended rather than being mounted on support springs. Supplying bespoke screens to fit within an existing footprint is one of our specialities; our in-house design team produced new drawings and the screen was manufactured and assembled at our Ravenstone facility.’

CMB supplied a new Niagara-style four-bearing 1.2m x 3.1m screen, which was cable suspended at the rear, as required, but equipped with just two decks, as one of the decks on the existing screen was not being used. A new live frame, underpan and discharge chute completed the installation. This unit acts as the primary screen, removing the oversize and feeding material to the wash barrel.

The second screen, a 1.5m x 4.1m double-deck wash screen, splits the material into 10mm and 20mm products ready for feeding to the stockpile conveyors. This unit was replaced with a CMB low-angle screen together with new underpan and chutework. Both screens were fitted the new Tema WS2.1 magnetic system.

Lea Woodward commented: ‘We were very impressed with the installation team; all their procedures were spot-on and they were very professional and completed the replacement in the allocated time frame.’

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