Rock Products

FEB 2018

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products www.rockproducts.com ROCK • February 2018 • 25 half-inch-wide attachment rails versus the mounting styles on conventional frame systems that result in up to 3-in. of dead space per rail where fines build up. Furthermore, in-house tooling capa- bilities allow us to provide many more options in these frame systems – from varying fastening options, material options, and stringer styles and types," said Daniel. "We've combined this framework system with our Maxi-Style modular screen panels. This allows more product pass-through over that of conventional modular media, resulting in more efficient screening, and more saleable product on the ground." Daniel said that in certain spots they have utilized VR panels with zig-zag- shaped openings for additional open area to help relieve the deck of the water. "Also, the zig-zag shape of the openings creates a vibrating action that greatly reduces or eliminates plugging," he said. "We've been running the wash screen for 50 hours per week since its instal- lation and we've had no maintenance issues whatsoever," said Bennett. "I have not replaced any of the Rubberdex screen panels on the top deck – and that is where you get the most beating and abrasion. After almost four months, I replaced just a few of the panels on the bottom deck," he said, adding that his previous polyurethane media wore far more quickly. "Also, with our previous frame and fas- tening system, it was hard to get the screen panels in and out. It took three times more maintenance time to chan- geout the previous screen panels over that of the new Polydeck panels," he said. Rubber Chute Liners Even before Sequatchie Concrete con- sidered upgrading its washing circuit, Kelly had presented the operation with the solution of using Polydeck Rubber- dex chute liners on their splitter box, which follows the screen. Since this solution worked so well, the Sequatchie Concrete management team was quite open to what Polydeck and Deister could do to improve over- all washing and screening efficiencies. Bennett said that they previously used 4- x 6-ft. polyurethane sheets as liners in the splitter box. "They were extremely heavy and hard to bolt in, especially when you're 30 ft. in the air. They would wear quickly, and changing out just one of the three sheets would take more than three hours," said Bennett. Now, they use Polydeck's 1- x 2-ft. modular rubber chute liner panels. "We can change out just the panel that is worn in a matter of minutes, rather than changing out an entire polyurethane sheet. It's made a world of difference in reducing material waste and mainte- nance downtime," he said. Optimum Efficiency A properly-designed washing and screening circuit boosts product quality and throughput, while reducing costly maintenance downtime and lowering costs-per-ton. "We've never seen our plant run as efficiently as it does now," said Bennett. Carol Wasson is a Fort Wayne, Ind.-based freelancer. RESHAPE www.kpijci.com Malcolm Bennett (left) and Tommy Daniel.

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