A dryer, use and features drum dryer is mainly used for fertilizer production, drying certain temperature and particle size of the fertilizer, but also can be used for drying other materials, the airport and angle distribution of material board design is reasonable, performance reliable, and thus high thermal efficiency, uniform drying, cleaning fewer materials, ease of use and maintenance. Dryer, rotary drum dryer, rotary dryer is the key equipment of compound fertilizer granulation, with advanced technology, reasonable design, compact structure, novel and practical, low energy consumption, with the corresponding ancillary equipment, consisting of a small production line, capable contact a certain capacity and mechanization of production.