单机除尘器在处理磨啄性粉尘时，设计中应采取的滤速时除考虑压力损失外，还考虑除尘布袋下部的磨损。单机除尘器在焦化厂、钢厂、铝厂、硅铁厂等行业的应用中，常常会遇到磨琢性大的粉尘，由于焦粉、氧化铝、硅石等硬度高的粉尘易磨损除尘布袋和单机除尘器的箱体，由于这种磨损的程度取决于粉尘中粗颗粒所占比重及其在布袋单机除尘器中运动速度，因此，对此采取的相应措施则主要是减少粗颗粒的数量和降低含尘空气的流速，这时我们就要对处理高磨琢性粉尘的布袋除尘器进行特殊的设计。

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