The Ruiao raw coal drying system mainly consists of a heat source, dispersed feeding, belt feeding machine, drum equipment, unloader, dust removal equipment, belt discharge machine, induced draft fan, and power distribution operation.
The materials are shoveled into the pulverizing feeder by the loader, then transferred to the feeding belt conveyor by the raw coal pulverizing feeder. They are then fed into the drum spiral propulsion device by the feeding belt conveyor, and then quickly guided to the inclined lifting area by the large angle guide plate. With the rotation of the drum and the inclination of the cylinder, they are lifted from the bottom of the cylinder and dropped from the top of the cylinder, forming a “material curtain”, The high-temperature flue gas entering the drying drum at the same end as the wet material passes through it, causing the wet material to form conduction and convective heat exchange, preheating the wet material and evaporating some moisture.