Rock Products

JUL 2017

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www.rockproducts.com ROCK products • July 2017 • 23 "The entire system is housed in a long steel-sided enclosure that runs the length of the belt with an internal walkway on either side, so dust is prevented from traveling, but it was quite unpleasant inside the enclosure," said James Kevill, the Martin Engineering technician who led the inspection and installation. "Once the transfer process began, my observa- tions were that around 80 percent of the material stayed on the belt and as much as 20 percent would spill along the belt path. The dust was so dense, it was hard to see your hand in front of your face." Although the enclosure confined the fugitive dust, many serious issues arose due to the sheer volume and density of the particles. Abrasive material would get into the bearings of rolling components and cause them to seize, leading to increased friction on the belt – a potential fire hazard. Dust would quickly build up around the loading zone and encapsulate the tail pulley, eventually causing the belt to just slide over the built-up material rather than riding on the rollers, which fouled the return side of the belt and the face of the tail pulley. Fugitive material would travel freely throughout the long shaft, piling up and restricting access for maintenance workers to address these issues. "The encapsulation and equipment failure issues really took a toll on the system," explained Oliver Whelpton, process optimization specialist at Singleton Birch. "We first tried to mitigate the dust using mechanical filtration systems Dust blocked walkways and posed a potential safety risk. Scan for more information

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