Difference between revisions of "Back Mix Dryers"

Back Mix Dryers where powder with lower moisture  content is already fluidizing. The product temperature and moisture content remains uniform throughout the  fluidized layer. By controlling  the powder layer in the Back Mix Dryers, residence time can be controlled. By controlling the amount and temperature of  the  drying air, the moisture content in the fluidized layer can be  controlled. The Back Mix Dryers are typically used  as an after dryer in integrated [[Fluid Bed Dryers]]. However, it is also  used in specially designed dryers such as the lactose dryer. The  Back Mix Dryers are typically followed by a plug-flow fluid bed for final drying/cooling.