1) bag filter with high collection efficiency, collection efficiency up to 99%, for more than 0.5μm dust removal efficiency of more than 99.99%; (2) a wide range of application, can be used for different types of asphalt mixing equipment, air volume vary; (3) adaptable, flexible, operating flexibility, choice of different functions of the bag, suitable for different types of fuel such as diesel oil, heavy oil, impurities, oil and coal, and gas inlet dust concentration change is large, little effect on the collection efficiency; (4) Compared with the wet dust removal equipment, dust can be graded according to the size of the thickness of recycling, there is no problem of sludge treatment or the formation of secondary pollution; (5) Compared with other bag house dust, no complicated ancillary equipment and technical requirements, cost and low operating costs, long service life. So bag house asphalt mixing plant is the most common, it is the ideal dust removal system.