What Is a Rotary Dryer?
A rotary dryer is a device used for drying processes, employing a cylindrical drum that rotates while utilizing a heat medium such as hot air, steam, or oil.
Inside the drum, protrusions called lifters are attached, which lift and stir the material being processed as the drum rotates. This stirring action makes the material more susceptible to the heat from the heat medium, facilitating the drying process. This sequence of operations constitutes the principle behind the rotary dryer.
The significant advantages of a rotary dryer include its fast-drying speed, high thermal efficiency, and minimal damage to the raw materials. Consequently, rotary dryers find extensive use in various drying processes, including those for food, chemicals, minerals, and more.