Rock Products

JUL 2015

Rock Products is the aggregates industry's leading source for market analysis and technology solutions, delivering critical content focusing on aggregates-processing equipment; operational efficiencies; management best practices; comprehensive market

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Page 18 of 55 ROCK products • July 2015 • 17 To achieve more open area, the pre- vious screen media provider then s u g g e s t e d c h a n g i n g t o t h e i r d i a - mond-shaped ("D" style) wire open- ings and supplied urethane bucker bar covers for the flat deck rail bars on the screen boxes to create a crown for the side-tensioned panels. These new pan- els were installed on the top and mid- dle decks of both screen plants. After running for only a few days the screen media panels broke apart causing pro- duction to come to a halt. Making An Impact Hinkley visited Sylvania Minerals Quar- ry to take measurements of the screen boxes to ensure everything would fit correctly. Next, they installed Major Wire's Flex-Mat 3 Tensioned Series D, a diamond-shaped media which works well for most standard applications, on both the top and middle decks of one screen box. On the second screen box, for compari- son, they installed more of the compet- itive "D" style screen panels that they had been using previously on the top and middle decks as well. After just a few days of production the screen box with the previous screen media on it broke again but the Flex- Mat 3 screen media lasted nearly four more months. It was then installed on the comparison screen and increased production on both screens. "We were really impressed with the wear life of Flex-Mat 3 and excited about the extra production. The oth- er self-cleaning screen media we used didn't have enough open area and didn't screen as well as Major Wire's Flex- Mat 3," said Begley. "It has been a good product, very reliable and the price is competitive with other self-cleaning screen media, but Flex-Mat 3 has a lon- ger wear life." Flex-Mat 3 Tensioned Series D is now installed on both of Sylvania Minerals' triple-deck wash screen boxes. Produc- tion has gone from 39 tph to an impres- sive 80-85 tph, more than doubling the production of minus ½-in. by plus 3/8-in. limestone, which is a premium product used in asphalt. The produc- tion of other washed products also increased. "The durability of Flex-Mat 3 screen media has meant far less time per- forming maintenance and changing screens, saving valuable operating hours," said Begley. "The plant can now run fewer hours and still put more material on the ground. "The only chal- lenge now is that the tertiary crusher feeding the wash screens can't feed material fast enough to keep up with the new Flex-Mat 3 screen media." Problem Solving Begley wasn't completely surprised by the performance of Flex-Mat 3 as he had experience with the product while Settling ponds cause proft-draining downtime and environmental headaches. McLanahan Corporation offers a custom engineered processing solution to help you recover more fnes, while saving time and maximizing production. Where you once had fne-laden slurry, you now have dry cakes you can market. For a more sustainable and more proftable operation, call McLanahan at +1 (814) 695 9807. Filter Press Filter Press Cake Dewatering Screen Thickener

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