... the slag, limestone, coal powder, clay Product Discription of Rotary Dryer: Rotary Dryer is a kind of machine with a rotating cylinder which ... plate, driving and supporting device, etc. Operation Principle of Rotary Dryer:The raw material plate which is arranged reasonably with changeable ... into the atmosphere. Then the materials would be dried. Rotary dryer is used to dry slag, clay, limestone; It is ...