Spray drying is a method of turning a liquid or slurry into a dry powder by rapidly drying with hot gas. This is the method of choice for drying many heat-sensitive materials, such as food and pharmaceuticals,[1] or where extremely consistent fine-grained materials may be required. Air is the heated

A rotary dryer is an industrial dryer used to reduce or minimize the moisture content of the material being processed by exposing it to heated gas. [1] A dryer consists of a rotating cylinder ("drum" or "housing"), a drive mechanism, and a supporting structure (usually concrete columns or a steel fr