For desulfurization gypsum, gypsum mineral powder and other materials, Dingli has carefully developed and produced the drum dryer system. After more than 20 years of drying practice, it has been continuously improved and perfected. With its advanced technology, high efficiency, low energy consumption and stable operation , Convenient operation and maintenance, safety and environmental protection, well received by users, more than 100 sets of drying equipment are in operation in China and all over the world. This type of equipment is widely used in cement, mining, building materials, chemical industry, food, metallurgy, chemical industry, compound fertilizer production, slag, clay and other industries. The equipment can be customized according to the variety of materials, precipitation depth and user needs to meet the individual needs of each user.

Gypsum Rotary Drum Dryer Working Principle

The gypsum drum dryer is mainly composed of a hot blast stove, a belt feeder, a drum dryer, a belt discharger, an induced draft fan, a cyclone dust collector, a bag filter (or a wet dust collector) and an operation control system. The equipment adopts a downstream (or countercurrent) drying process, and its working principle is as follows: After the wet material enters the drying drum, it is divided into the following working areas: one is the material guide area, where the gypsum enters this area and contacts with high-temperature hot air to quickly evaporate water, and the material is in the large The material guide plate at the guide angle is moved and then introduced into the next work area; the second is the copy board area, where the gypsum is picked up by the copy board to form a material curtain state. At this time, the material is in full contact with the hot air, and the moisture in the gypsum quickly Evaporated and stripped into water vapor, the water vapor is then sucked away by the induced draft fan, so as to achieve the purpose of drying the gypsum; the gypsum is dried in this area into a loose state with a moisture content of less than 5-10% (or lower), and the material after heat exchange After reaching the required moisture state, enter the final discharge area; the third is the discharge area, where the drum does not have a lifting board, and the material rolls and slides to the discharge port in this area to complete the entire drying process.