Rock Products

APR 2018

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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Page 38 of 67 ROCK products • April 2018 • 37 Various belt cleaner suppliers have their own standards for blade width. Some manufacturers opt for more than the min- imum coverage, but rarely does the blade size need to be equal to or greater than the belt width. For optimum clean- ing, the dirty portion of the belt's carrying surface should be observed or calculated and the cleaner's size matched to it. Installing a blade that is wider than the material load on the belt can lead to undesirable wear patterns. The center section of the blade may wear faster than the portion of the blade on the outside area of the belt, because there is more abrasive cargo in the middle. Figure 1: When the blade is wider than the material flow, its center may wear quicker than the outer edges. The outside portion of the cleaning blade will then hold the center section of the blade away from the belt. As a result, carryback can flow between the belt and the worn area of the blade, accelerating wear on this center section. Eventu- ally, the process creates a curved wear pattern sometimes referred to as a "smiley face" or "mooning." Figure 2: As the center of the blade wears unevenly, the outer edges create an effect called a "smiley face" or "mooning." Invest in our quality Profit from our solutions TM 715-483-9611 ∙ ∙ A BRAND YOU'VE KNOWN SINCE 1965 A B RAND YOU CAN TRUST Armor ® Screen Media Combination of high grade wire cloth with a molded coating of premium polyurethane designed to protect your operation with the combined benefits of long wear life and high open area.

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