Flights (rotary dryer)

Flights, also commonly referred to as “lifters,” are used in rotary dryers and rotary coolers to shower material through the process gas stream. Affixed to the interior of the rotary drum, these fin-like structures scoop up material from the bed and shower it through the gas stream as the drum rotates.

This showering creates a curtain of material spanning the width of the rotary dryer or cooler, helping to maximize the efficiency of heat transfer.

Depending on the needs of the material and the process, flights are engineered in a variety of designs and placement patterns in order to create a maximum efficiency curtain, while still retaining the integrity of the product.