Usage: suitable for drying of compound fertilizer and single fertilizer. The barrel of this machine adopts a modular structure for easy transportation. Add granule area, improve granule effect, enhance surface finish and strength of granule; The materials are covered with the whole cross-section of the barrel body and the heat exchange is sufficient. The machine is equipped with a thermometer, a vibrating device and a sealing device, which improves the production efficiency and has the characteristics of simple structure and convenient maintenance.