Effect of granular shape on electrostatics
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Granules are widely used in chemical, energy, food, pharmaceutical, mining and relevant industries. In solid processing systems, electrostatics could be commonly generated, which causes many problems, such as granule clustering, blocking, sparking and even exploding. So far, the functional dependence of electrostatic charge generation on granular size and shape has not been fully understood. In this work, granules made of polyvinyl chloride (PVC) with shapes of triangle or trapezium and mean size 2.0-5.0 mm, were studied. Granular shape factors, such as front-facing angle, length-ratio, area, and sliding orientation, relative humidity affected electrostatics greatly, but independent of how many times of granule sliding. ? All Rights Reserved.