Rotary drum dryer is the most common and widely used drying equipment. The heat medium directly contacts with the dried material by convection heat transfer. The rotary drum dryer is mainly used for fully volatilizing the moisture in the materials to be dried by means of heat conduction through the rotating drum, so as to achieve the purpose of drying. It can be divided into parallel flow type and counter flow type, according to the flow direction between hot air and materials.

The three layer rotary drum dryer is special designed on the basis of single drum drying equipment and foreign three drum drying technology. It can reduce material drying energy consumption and expand production capacity. With latest three-layer drying process, the whole set of drying equipment has the advantages of reasonable design, excellent production, stable performance, advanced technology, high output, low energy consumption, small floor area and high degree of mechanization. After the improvement of our technicians, the applicability of three layer rotary drum dryer is further enhanced, and the drying effect of high humidity materials is excellent.