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03 September 2018

Limestone quarry reports 50% increase in saleable product

First publishedon www.AggBusiness.com
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Terex Finlay 693+ and 694+ working in tandem at Barnsdale Bar quarry

The Barnsdale Bar limestone quarry in Yorkshire, UK has reported a significant improvement in its product quality which it attributes to two newly-acquired screening plant.

Quarry operator FCC Environment says there has been a 50% increase in the saleable amount of undersize product following the arrival of the Terex Finlay 693+ double deck screen and 694+ tracked mobile inclined screen.

The machines are working in tandem at the quarry near Pontefract – which is one of six limestone quarries in Yorkshire belonging to Darrington Quarries, part of the FCC Environment Group.

Together they are processing 1,400 tonnes of material a day, with the 694+ producing four products, which include a 40mm, 20mm, 10mm and a -10mm dust – which then go on to be used for road construction, house building, concrete production and civil engineering.

Barnsdale Bar quarry manager Andy Archer said of the 694+: “The biggest selling point of the machine for me was its screen box, which features three, full sized 20ft screens.

"With a larger and more efficient screening area, we are processing a higher volume of material to a much better quality. We’ve never had so much 10mm product in stock.”

The Terex Finlay 693+ features two full sized 20’ x 5’ screen decks and with a combination of quick wedge tensioning on the top deck and hydraulic tensioning on the bottom, it is designed to ensure that mesh setup and change out times are kept to a minimum. Its three conveyors allow FCC Environment to produce a 75mm oversize, a 75mm-40mm clean stone and a 40mm aggregate.

The 40mm product feeds directly into the Terex Finlay 694+. It features an hydraulically folded fourth conveyor, which allows simple adjustment with variable tilt and slew discharge for recirculation or stockpiling of finished material.

The two new machines were supplied by Finlay Plant Northern, part of the Finlay Group of companies, which has worked alongside FCC Environment for around 20 years and supplied them with seven machines, including impact and jaw crushers as well as screening plant.

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