Rock Products

NOV 2012

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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FEATURE Destroying Dust LINWOOD MINING AND MINERALS RECEIVES QUICK PAYBACK AND REDUCES DOWNTIME IN LIMESTONE OPERATION WITH DUST-SUPPRESSION SYSTEM. By Mark S. Kuhar CHALLENGE: Reduce troublesome dust at crusher and transfer points. SOLUTION: A high‐powered dust suppression system from Dust Control Technology. TIP: An electronic monitor constantly samples air quality in the limestone mining area. The atomized misting unit can cover nearly 125,000 sq. ft. (1.16 hectares) when equipped with 359-degree oscillation. ne of the nation's largest lime‐ stone mining operations has dras‐ tically reduced process downtime with a high‐powered dust suppression system so efficient that a plant spokesman estimated it paid for itself during the first month of use. O By avoiding forced shutdowns due to high dust readings that had plagued the site, the portable equipment has saved thousands of dollars in lost production, while allowing reassignment of man‐ power previously spent handling water hoses, according to the company. Like many mining and quarrying opera‐ tions, Linwood Mining and Minerals 24 ROCKproducts • NOVEMBER 2012 Corp., Davenport, Iowa, had been using hoses and truck‐mounted spray bars to help control dust at the crusher and transfer points, but results were always marginal. Despite their best efforts, crews could not prevent dust from be‐ coming airborne, and every work stop‐ page caused by high particulate levels was costing the firm significant amounts of money. An electronic monitor constantly sam‐ ples air quality in the limestone mining area, and data is forwarded to Linwood's control room and to the Iowa Depart‐ ment of Natural Resources. To comply with rigid government standards, total dust emissions from Linwood's plant and

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