Municipal sludge relates to people living environment and health. It is necessary dry them. However, municipal sludge is high humidity and strong viscosity and easily to bond again, traditional drying machine cant dry it completely. Our drying equipment is triple stage and multi-loop rotary dryer for municipal sludge. We specially designed rotary harrow, hot air distributor and discharging system, W type guiding and lifting boards, S Type transporting way, three levels cylinders etc, and have over 100 patent technology. With the combination function, it efficiently prevents sludge bonding again or bonding to the cylinders, heating energy is fully used, drying speed largely increased, thus sludge will be dry more completely as request!