Fine coal is high-quality coal that has been mechanically processed by coal washing plants to reduce ash and sulfur content and remove some impurities, suitable for certain special purposes. After mechanical dehydration, fine coal still has high moisture content, which not only affects coal quality but also increases transportation costs. We have developed a washing fine coal drying system for processing clean coal. After drying, the final moisture content of fine coal can be less than 8%, and the particle size can be controlled below 8mm.
Working Principle of Fine Coal Dryer
Due to the viscosity of fine coal materials, the drying process is divided into the following working areas:
1. Material oriented zone: Wet materials come into contact with high-temperature hot air, rapidly evaporating moisture. The material is transferred to the next working area under the action of the large guide angle guide plate.
2. Lifting and cleaning area: Wet materials are lifted by lifting plates to form a material curtain, which is easy to adhere to the drum wall when the materials fall. Due to the equipment design having a cleaning device, the cleaning device can effectively clean the materials adhered to the inner wall. In this process, the cleaning device also plays a role in breaking the clumping of material particles, thereby increasing the heat exchange area and drying rate.
3. Slanted plate area: The wet coal in this area has always been in a low moisture and loose state, with no cohesiveness. After sufficient heat exchange, the material reaches the required humidity and enters the final discharge area.
4. Unloading area: There is no lifting plate in this area, and the material slides to the unloading port to complete the entire drying process.
Dingli has been committed to researching fine coal dryer equipment for 20 years and has a mature R&D system and production experience. We have a certain quality guarantee for the equipment, welcome to come for consultation!
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