... dry materials in metallurgical, building material, food, light industries, 2.low power sawdust rotary dryer detail description of sawdust rotary ... is used to dry some material with big capacity. 2. Rotating reliable, flexible operating, adaptable, big capacity, widely used in metallurgical industry, ... air duct, inlet month and furnace body and other structure. 2. The fuel can be coal, fire, gas, and ...