Flights, also commonly referred to as "material lifters" or "shovelling plates" are used in

rotary dryer A rotary dryer is a type of industrial dryer used to reduce or minimize the moisture content of the material it is handling by bringing it into contact with a heated gas. The dryer is made up of a rotating cylinder ("drum" or "shell"), a drive mec ...

s and rotary coolers to shower material through the process gas stream. Fixed to the interior of the rotary drum, these fin-like structures scoop material up from the material bed at the bottom of the drum and shower it through the gas stream as the drum rotates. This showering creates a curtain of material spanning the width of the drum, helping to maximize the efficiency of heat transfer. Depending on the needs of the material and the process, a variety of flight designs and placement patterns are used in order to create a maximum

efficiency Efficiency is the often measurable ability to avoid wasting materials, energy, efforts, money, and time in doing something or in producing a desired result. In a more general sense, it is the ability to do things well, successfully, and without ...

curtain while still retaining the integrity of the product.

References

{{Reflist Liquid-solid separation