Through electric power, diesel power, wind power, flammable material resources and so on, the use of ambient air heating, transmission to through the surrounding, and then reach the appropriate temperature for dehumidification treatment.

The specific process is as follows: the wet material is sent to the hopper by the belt conveyor or bucket elevator, and then the feeder of the hopper enters the feeding end through the feeding pipe. The inclination of the feeding pipe should be greater than the natural inclination of the material, so that the material can flow into the dryer smoothly. The dryer cylinder is a rotating cylinder slightly inclined to the horizontal line. The material is added from the higher end, and the heat carrier enters from the lower end, and makes countercurrent contact with the material. There are also heat carrier and material and flow into the cylinder together. As the cylinder rotates the material moves to the bottom end under the action of gravity. Wet material in the process of moving forward in the barrel body, directly or indirectly get the heat of the heat carrier, so that the wet material can be dried, and then at the discharge end through the belt conveyor or screw conveyor sent out. The inner wall of the cylinder is equipped with a copy plate, which is used to copy up the material and scatter it, so that the contact surface between the material and the air flow increases, in order to improve the drying rate and promote the material forward. Heat carrier is generally divided into hot air, flue gas, etc. After the heat carrier passes through the dryer, the cyclone dust collector is generally needed to collect the material in the gas. If it is necessary to further reduce the dust content of tail gas, it should also be discharged after bag dust collector or wet dust collector.