Abstract
AbstractReasons for filter bag failure at steel plants were analyzed and a suitable approach to overcome such problems is proposed. Clean and used filter bags were tested to evaluate tensile and bursting strengths and air permeability properties. In order to simulate the behavior of the filter bags under acidic conditions normally encountered in actual working environment, an acid dew point test was conducted on the clean bags. The structural changes in all bags were determined by scanning electron microscopy. A significant reduction in tensile and bursting strengths was observed after acidic treatment. In order to improve the durability of the bags, they were coated with a mixture of acrylic binder and nanoclay. Commercial filter bags as well as the developed samples showed improved resistance without any failure behavior.
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