The Niro VIBRO-FLUIDIZER® is a vibrating fluid bed of the plug flow
type.
It is seen here in sanitary design.
A powder layer is vibrated on an air distributor plate
(patented). The effect of this vibration combined with the upward and forward
directed flow of air through the plate creates ideal processing conditions and
powder transport. The unit operates with a shallow powder layer of less than
200 mm. This gives a much more lenient powder treatment, since powder residence
times are shorter than in non-vibrating fluid beds which operate at much deeper
powder layers.
The VIBRO-FLUIDIZER® is successfully used on all types
of powders, agglomerates, and granulates, especially those which fluidize
poorly due to a broad particle size distribution or highly irregular shape, or
require relatively low fluidization velocities to prevent attrition.
The VIBRO-FLUIDIZER® can be operated as a separate drying or cooling
unit. It is often associated with a spray drying system to produce agglomerated
instant powder or act as a powder conditioning plant for special coating
operations.