desulfurization gypsum rotary dryer

The desulfurized gypsum dryer primarily consists of a heat source, a disintegrating device, a belt loader, a feeder, a rotary drum, a belt discharger, an induced draft fan, a discharger, and a power distribution cabinet.

[Feed Particle Size]: <= 50mm [Processing Capacity]: 5-30t/h

[Applications]: Suitable for drying materials in industries such as cement, mining, building materials, chemicals, grain, and compound fertilizer production.

[Applicable Materials]: Gypsum, desulfurized gypsum, phosphogypsum, ore, blast furnace slag, coal, metal powder, phosphate fertilizer, and ammonium sulfate. Suitable for drying powdered and granular materials with special requirements.

Advantages

Principle of working 

Desulfurized gypsum is inherently highly wet and sticky. During the drying process, wet desulfurized gypsum is transported via a belt conveyor to the desulfurized gypsum disintegration equipment. After rapid disintegration, the lumpy desulfurized gypsum enters the negative pressure dryer and is divided into the following working areas:

The first is the material guide area. Here, the wet desulfurized gypsum enters this area and comes into contact with high-temperature, negative-pressure hot air, rapidly evaporating a large amount of water. The desulfurized gypsum is then moved by the large-angle scrapers, preventing it from forming any bonds and is then directed to the next working area.

The second is the cleaning area. Here, the wet desulfurized gypsum is lifted by scrapers to form a curtain. As the material falls, it tends to stick to the drum walls. The equipment features a cleaning device that quickly removes any desulfurized gypsum that adheres to the drum walls. This cleaning device also breaks up any lumps and agglomerates, thereby increasing the heat exchange area, improving heat and mass transfer efficiency, and boosting the drying rate.

The third is the inclined lifting plate area, which is a low-temperature drying area. The desulfurized gypsum in this area is in a low-moisture loose state and no longer has a sticky phenomenon. After heat exchange, the finished product reaches the required moisture requirement and moves into the final discharging area. The fourth is the discharging area. The drying main drum is not equipped with a lifting plate in this area. The material rolls and slides to the discharge port in this area to complete the entire drying process.