The rotary dryer is mainly composed of a cylinder body, a roller ring, a base retaining roller and a tail dust removing device. The hot air and the material are contacted in the cylinder body, and the material is designed to make the material and the hot air fully contact to achieve the drying effect.

He moisture content of raw materials should be controlled at 15 ~ 20%，or it will affect the molding effect of particles. A complete drying process includes, feeding belt, hot blast stove, Combustion engine, dryer, Cyclone, discharging belt, Air blower, power distribution cabinet, etc.