Weir for controlling the bed height/ residence time in Fluid Bed Dryers: In an efficiently fluidized bed, the solid material like granules/powders or pellets, are fluidized by an upflow gas.
The wet solids are lifted from the bottom and causes the solids to behave as a fluid. The air velocity is adjusted to keep the moving layer of material fluidized.
At the end of the dryer, the same volume of solid runs over an overflow weir (this can also be a rotating […]
Fluid bed dryers work on the principle of fluidization, a process in which hot air is introduced into the spaces between solid particles. Each particle is in direct contact with, and surrounded by, the hot air – creating an efficient and uniform drying process. The material is dried in the first section of the machine and cooled in the second. Most minerals can be dried using evaporative cooling. Evaporative cooling means that the last part of the moisture is evaporated […]
