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DONGDING - Gypsum Dryer
After gypsum ore is extracted from mines or quarries, it is crushed and stockpiled as needed. If the gypsum ore’s moisture content is greater than 0.5 weight percent, then the material requires drying. Gypsum dryers, also known as rotary dryers, work as a moisture control solution when processing both mined gypsum and pelletized gypsum. The dried gypsum can used in the wallboard manufacturing industry, and can also used as cement additives in the cement manufacturing industry.The gypsum dryer is divided into the following working areas during the drying process:
1.In the material guiding working area, gypsum enters into the roller and fully contacts with the high temperature hot air here to evaporate water rapidly.
2.The cleaning area; The cleaning device and crushing device in the cleaning area can effectively clean and crush the materials sticking to the inner wall, thus increasing the heat exchange area and improving the drying efficiency.
3.Inclined material lifting area; where the gypsum has a low moisture and loose state, and after full heat exchange, it reaches the required moisture.
4.The discharging area; where the material rolls and slides to the discharge port to complete the whole drying process.
1. Drying gypsum hardens the material and avoids congesting equipment in future steps,such as grinding;
2. The drying process prevents the matrial from some handling issues such as clumping. Drying also forms a strong pellet that is capable of breaking down quickly;
3. The tumbling action within the gypsum dryer rounds and polishes the pellet, helps to create a uniform, premium product.
1. The gypsum dryer adopts the downstream drying technology, the flue gas and materials enter into the drum at the same side, with high thermal efficiency;
2. The gypsum dryer has the advantages of stable operation, strong processing capacity, low fuel consumption and low drying cost;
3. The new internal structure is adopted to strengthen the cleaning of materials and reduce the phenomenon of gypsum sticking to the wall;
4. According to the requirements of customers, the product size and moisture can be controlled. After drying, the moisture of gypsum can be controlled between 8% - 13%, and the particle size can be controlled below 8mm.