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Innovative Rock-Dusting System to Assist with Respirable Dust Compliance

By Steve Fiscor, Editor-in-Chief

DSI Underground Systems has developed a noncombustible, non-respirable rock dust mixture (DYWIDust) and an application system (DYWIDuster). Coal operators can use the technique to convert their dry rock dust into a wet-dusting system that is dependable and user-friendly. The DYWIDuster is a hydraulically powered unit that sits in the bucket of a scoop. At the beginning of the shift, miners prepare a batch by mixing the dust with water and a polymer, and then set the system aside. They can apply the DYWIDust as needed as the continuous miner moves between headings without having to withdraw the crew from the section.

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Increase Fuel Choices While Maintaining a Slagging and Fouling-Free Boiler

By Dr. Murielle Perronnet, Dr. Adam Campen, David Osby and Nicole Roney

Fluctuating fuel prices, increasingly restrictive emission regulations, and an unpredictable economy are driving energy producers to make operational changes such as burning non-design coals to reduce SOx, NOx, Hg and CO, while also producing power profitably.

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Screening System Targets Specific Needs

By Steve Fiscor, Editor-in-Chief

Vibratory screening machines serve several purposes in the prep plant. On the initial cut, they scalp the rock and other tramp materials from the run-of-mine (RoM) product stream. Screens then divert product to different separation processes based on size. Next, they dewater clean coal and refuse allowing the plant to recycle the water and reclaim the magnetite.

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Moisture-tolerant Rock Dust Could Improve Safety Underground

?Imerys has developed a moisture-tolerant rock dust.For many years, limestone-based rock dust has been the product of choice for North American coal mine explosion abatement. Typically, limestone products are readily available throughout North America and when processed to meet government specifications, adequately prevent the propagation of a coal dust explosion.

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Alpha Coal West Works with Cat to Develop a Better Dipper

The Coal Dipper in action last fall after many hours of work between Alpha Coal West, Wyoming Machinery Co. and Cat.By Donna Schmidt, Field Editor

It’s a mission by every mine: mine coal faster, more efficiently, with less effort. Thanks to a meeting of minds between Alpha Coal West, Wyoming Machinery Co. and Caterpillar Global Mining, one of the nation’s largest coal complexes found that mix in the development of the Performance Series Dipper.

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