Finedoor have recently completed a contract to replace an aged aggregate screen at Lockington Quarry, Leicestershire. Owned and operated by Lafarge Aggregates Lockington Quarry operates an aggregate and wash plant processing 360,000 tonnes of sand and gravel per annum. The site supplies, an on-site bagging plant and an on-site readymix plant as well as local markets.

The new replacement screen was designed to fit into the same location within the plant. Finedoor who specialise in dimensionally similar replacement screens; can easily supply a new unit which can be installed into an existing location, designed and manufactured to sit on the existing steelwork.

After completing an on-site evaluation Finedoor manufactured a 6.1 x 2.4 metres - 2 and half deck screen which after being tested in the Finedoor works was delivered to site, installed (inclined at 15 degrees) and commissioned over a brief period of four days.

The Finedoor Ritescreen is constructed of 12mm thick rigid side plates with heavy duty bolted in deck frames. Of two bearing construction the screen features grease lubrication and is designed to suit side tension rubber tensioned screen media. Coil spring mounting to isolate vibration was supplied with the base plate.

The Finedoor Ritescreen features an alloy steel shaft for reliability and strength and incorporates removable imbalance weights. The screen is driven by a 30kW TEFC squirrel cage motor and drive pulley complete with vee-belt drive all mounted on a spring loaded motor base. Feed and discharge trays fitted with rubber liners complete the specification.

The existing feed / discharge chutes and conveyors usually require very little, or no modifications, thereby reducing costs and installation time. 

The successful installation brought the plant back into operation within the agreed time frame.

Ian Smith - Quarry Manager, commented, "Finedoor produced an excellent package to fit the needs of our business. Their focus on health and safety, coupled with a flexible and proactive attitude made the whole process flow efficiently. The reduced downtime incurred by the site was also of great benefit"