... Trapezium mill includes main frame, classifier, decelarator, duct fan, bag duct collector, pipe connection, cyclone power collection ... fineness. 3. Use the high-efficiency and energy-saving centrifugal induced draft fan. The efficiency of prismatic ... with the desulphurizing equipments, it is able to improve the desulphurizing efficiency and is an ideal desulphurizing powder equipment.High pressure ...