Rotary dryer is alsocalled rotary drying machine,which is especially widely used as mining equipment.Roller dryer is suitable for drying metallic and nonmetallic materials such as clay, coal slurry, sludge, gypsum, etc. Rotary drum dryer also can be used for drying all kinds of mineral powder after ore dressing operation, such as iron powder, copper powder, manganese powder, tin powder, etc.
Rotary dryer is mainly composed of rotary part, lifting board, transmission part, supporting part and seal ring. Since the dryer machine is obliquely installed, the materials flow to the lower end of the machine under the gravity and the rotation of the machine, and on the other hand, the materials are repeatedly lifted by the lifting board to the higher end and then spread down constantly, so that the materials will form a even curtain inside the cylinder and conduct heat exchange with the hot air inside the cylinder. Since the materials constantly spread and the water contained in them will be dried, thus achieving the aim of drying.