Rock Products

MAR 2017

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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76 • ROCK products • March 2017 EQUIPMENT & TECHNOLOGY MATERIAL HANDLING & CONVEYING A Texas supplier of sand for ready-mix concrete and masonry applications is among the first companies to register its con- veyor belt cleaners via a new mobile app, taking advantage of a factory-direct replacement program that guarantees fresh polyurethane scraper blades, specified and custom-fitted on-site and installed free of charge. Image Materials will benefit through a consistent supply of freshly-molded, high-quality blades – each labeled with a date of manufacture – delivered directly from the factory and installed by a trained service technician. The new "Mr. Blade" program from Martin Engineering assures custom- ers of professionally installed replacement blades that are matched to their specific operating conditions, providing optimum cleaning performance and service life. The operation dredges sand from underground deposits on-site, typically processing 1,200-1,500 tpd. "Image Con- struction has been in business since the 1980s," explained Supervisor Jason Proffitt. "In 1993 we started a ready-mix operation, and a sand shortage in 1998 motivated us to try and supply ourselves and other firms with high-quality sand." The dredged sand is first brought to the classification tank to size the particles. Coarse particles are separated out for concrete, while finer sand is sold for masonry applications. The facility has four conveyors at this location to move material from the sand screw discharge and eventually to the stockpiles, where it awaits loading onto customer trucks for transport. "The problem we can experience is that even dewatered sand tends to cling to the conveyor belts, and the cleaners we've been using at our other facility were leaving behind some carryback," Proffitt continued. "That creates a mess, which has to be cleaned up regularly, and it's lost material that can't be sold. Carryback also acts as an abrasive, contributing to premature wear of rollers, bearings and other components." Lasting Longer Proffitt said that the cleaners used in the company's other location didn't last as long as expected, and they failed to deliver consistent cleaning throughout the product's service life. He estimated that 10 hours per week are often spent on repairs and cleanup that can be directly attributed to carryback. Martin Engineering Service Technician Tyler Lisenby conducted a thorough inspection of the conveyor and belt cleaning system at the Alvord location, and he suggested a scraper blade engineered specifically for sand and gravel applications. Able to remove even wet, sticky sand from belts up to 72 in. (1,800 mm) wide, the Martin Pit Viper is a durable, one-piece blade that contains approximately 20 per- cent more urethane than comparable pre-cleaners, yielding a longer life in challenging service conditions. "The cleaning performance is excellent," Proffitt continued. "And we decided to take advantage of the product registration for the peace of mind. The technician visits us once a month and inspects the cleaners, tensions or adjusts anything that needs it and helps us avoid breakdowns. "Martin is the only manufacturer we've ever seen that puts serial numbers on its blades, so they can be tracked from the date of manufacture all the way to the end of their life," Proffitt continued. "That kind of data not only helps us with budgeting, it also allows us to assess the service life of the products very objectively. But the best part is knowing that a trained professional is taking care of the system." Improved Belt Cleaning Reduces Maintenance at Image Materials

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