High efficiency and energy saving rotary dryer: the wet material is sent to the hopper by the belt conveyor or bucket elevator, and is sent to the cylinder body by the winch feeder. The winch feeder is designed and controlled by frequency conversion, and the feeding speed is adjusted arbitrarily. The main body of the rotary dryer is a slightly inclined cylinder that can be rotated. When the material enters the cylinder, it is in direct or countercurrent contact with the hot air passing through the cylinder, or is in effective contact with the heating wall and is dried, and the product is discharged from the other end.
The process uses steam heat exchange, the hot air after heat exchange is directly dried by the rotary dryer to the waste slag, the steam air heater is usually a finned tube heater, the outside of the heat exchange tube is a fin, because the air specific heat is low, the heat transfer is poor, and the steam specific heat is large and the heat transfer is fast, so the fin is added to the outside of the air to improve the heat exchange area of the air side, so that the air is better heated. The steam fully transfers the heat to the fin side (the air side is the shell side) through the finned tube (tube path), heating the natural clean air introduced by the fan. By adjusting the steam flow rate and the fan speed, the right amount of ideal hot air can be obtained for the waste slag drying. The steam adopts the method of high inlet and low outlet, and the trap is installed at the outlet.

1. High thermal efficiency, is the use of gas flow operation, reasonable heat transfer mode, small heat loss, good insulation effect.
2. Long life few wearing parts, thus greatly extending the service life. The whole equipment needs little repair.
3. Low energy consumption; Due to the high thermal efficiency of this type of dryer, the amount of steam used for the dryer is greatly reduced. In addition, the system has no large electrical equipment, so the energy consumption of the system is much lower than that of ordinary dryers.
4. Small environmental pollution, the discharge end of the design of the feeding cover, the top is provided with smoke and dust exhaust pipe, the pipe and smoke exhaust pipe together through the exhaust fan discharge, the cover outlet design manual adjustment valve, discharge can be directly into the ton bag, in order to prevent dust play a good effect, its own is a good dust collector. This greatly reduces the load of the dust collection equipment, while improving the dust collection efficiency and prolonging the service life.