Donaldson® Torit® Dura-Life™ Filter Bags Provide 3X Life in Cement Plant Collectors
INDUSTRY: Cement
PROBLEM: Short life —only 3 months on the polyester oleophobic filter bags in a Donaldson Torit DLMV Dalamatic dust collector, due to moisture causing crusting dust cake and nodules on the media surface.
SOLUTION: Now, the excellent dust-release properties of Dura-Life allows the filter bags to perform effectively for 9 months.
Cement plants offer particularly difficult challenges to dust collectors. When cement dust is dry, it’s just like any other dust and can be filtered, but when moisture is introduced, the cement dust cakes up on the filter media and hardens into crusty chunks.
]At this major facility in the United Kingdom, the Dalamatic® Insertable (DLMV), installed at the head of the bucket elevator, vents the elevator casing and cement discharge point. The Dalamatic DLMV is versatile because it inserts into tight spaces where normal dust collectors don’t fit. While the finished cement is dry, large quantities of water are injected into the mill to cool the mill shell and lower the finished temperature of the cement. The high temperatures and high humidity were causing short filter life—only 3 months on the polyester oleophobic bags, and even the more expensive PTFEcoated filter bags lasted only 6 months.
Donaldson® Torit® Dura-Life™ filter bags proved to be a better solution, yielding effective filtration for 9 months—3 times longer than standard polyester bags! By operating at a lower pressure drop the cleaning system was better able to pulse cement off the bags. The happy maintenance manager said, “the filter bag life surpassed my expectations!”