As a conventional kiln type, the FCHZ series rotary kiln has been used in the field of rough processing of powder materials. It has the advantages of large output and low energy consumption. This furnace type adopts a special sealing and gas path layout structure, which not only retains its inherent advantages, but also allows this furnace type to be applied to the drying and sintering fields of electronic grade powder. The furnace tube diameter can reach 600-1500mm, the furnace tube length can reach 6000-15000mm, and the temperature control accuracy can be controlled within ±1°C. Combined with intelligent instrument control, it is very suitable for mass production of fan blade pyrolysis.