A drum dryer is a type of industrial equipment used to remove moisture from materials. It consists of a large rotating drum that heats the material as it moves through. The heat causes the moisture to evaporate, leaving behind a dry product. This process is commonly used in industries such as food processing, pharmaceuticals, and paper manufacturing. The design of a drum dryer allows for continuous operation, making it efficient for large-scale production. It can handle various materials, including slurries and pastes, and is often used in conjunction with other drying methods. The versatility of a drum dryer makes it a valuable tool in many manufacturing processes.