Coal Age

NOV 2015

Coal Age Magazine - For nearly 100 years, Coal Age has been the magazine that readers can trust for guidance and insight on this important industry.

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its current line as well as new product additions for mines of all types. Just last month, the company introduced its fam- i l y o f S H D s u p e r h e a v y - d u t y p r i m a r y c o n v e y o r b e l t c l e a n e r s d e s i g n e d f o r severe operating conditions. Designed for fast, heavily loaded belts being kept up by crews seeking out a long service life and minimal maintenance, Martin's cleaner line has been proven on belts up to 10 ft (305 cm) wide with speeds as high as 2,000 fpm (10 meters/sec) and carrying loads of up to 300,000 tpd. They are also designed with the compa- ny's patented CARP technology, which pro- vides constant angle geometry to match the pulley diameter accurately across all stages of service life. The urethane blade offers up to 42 sq in. (271 sq cm) of wear surface — more than seven times the wearable sur- face of standard cleaner designs. A range of color-coded and high-performance blade choices are available for many specific applications and materials. "The extremely durable construction helps eliminate carryback, reduce emer- gency outages and minimize unscheduled downtime, product engineer Daniel Marshall said, adding that, in some appli- cations, it has been shown to be the only design that can withstand the severe oper- ating conditions. "This design can allow conveyor opera- tors to improve maintenance planning and reduce expenses. With lower maintenance requirements, it saves money through few- er repairs and blade replacements, as well as faster service procedures. The reduced carryback means improved working condi- tions and plant safety, maximized equip- ment life and reduced cleanup." Currently available are the SHD 1200 Series and the SHD 600 Series cleaners. The SHD 1200 line has been engineered for high-speed conveyors that have a head pulley of 48 in. (122 cm) or more in diam- eter and belt widths between 42-120 in. (107-305 cm). The blades are up to 12 in. (30.5 cm) in height and are made of a heavy structural steel frame, and the cleaner was designed along with a ten- sioner system to provide effective clean- ing and reduced service requirements. It is fully compatible with reversing convey- ors and belts with mechanical splices and has a service temperature range of -30 to 300°F (-34 to 149°C). SHD 600 Series cleaners are also installed at the primary position, but in this case the units are ideal for pulleys smaller than 48 in. (120 cm). "The SHD Series was originally designed for a severe-duty mining appli- cation, built to handle the overburden at one of the largest pit mines in the world," Marshall said. "Every cleaner they tried was getting destroyed by the harsh condi- tions. There just wasn't anything on the market that could withstand the speed and abrasive forces, so we completely re- engineered the conventional belt cleaner design, from the I-beam frame to the huge blade segments. In fact, these cleaners are so large that we had to invent a way to properly tension them." The Martin Engineering design team has also recently tackled the far end of the conveyor's journey with its new Boot-Lift c o n v e y o r e q u i p m e n t c o n t i n u e d 32 www.coalage.com November 2015 Martin's SHD Cleaners were engineered for fast and heavily loaded belts. The Martin SHD Series was developed for super heavy-duty applications. Installed on the track flanges, Martin's boot rises to the unloading gates for unloading of bottom-discharge hopper cars.

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