... 2012 Energy-saving Rotary Dryer,Machine Description of coal,gypsum rotary dryer:Rotary Dryer, also named revolving tube dryer, is used to dry ... construction, metallurgy, chemical , and cement industries .The rotary dryer is made up of a rotating object, a winnowing board ... is easy to operate .Components of coal,gypsum rotary dryer: Rotary dryer is mainly composed of cylinder, under frame, feeding and ...