What are the types of rotary kiln?

Rotary kilns are classified based on their length-to-diameter ratio, which distinguishes between long kilns and short kilns. Dry kilns, with a shorter length-to-diameter ratio of less than 16, are categorized as short kilns. Wet kilns, typically longer with an aspect ratio of 30 to 40, are used in different applications requiring longer drying durations. Spray kilns fall between these two categories in terms of drying duration. Additionally, rotary kilns are specialized for specific industrial processes, such as cement production, lime calcination, mineral processing, waste incineration, and specialty applications like producing activated carbon or titanium dioxide. Each type is engineered to optimize the thermal processing required for their respective materials and applications.