The present invention relates to a rotating fluidized bed apparatus for powder
particle. A gas circulation path is formed at the periphery of the treatment chamber
2 via the circumferential faceplate 202, 212, and the circumferential
faceplate is adapted to rotate around an axis. Behavior of powder particles can
be controlled by introducing gas from the periphery of the treatment chamber via
the circumferential plate 212 to exert centripetal force on the powder particle,
while exerting centrifugal force on the powder particles accompanying rotation
of the circumferential plate 212. In another aspect, by making the arrangement
proportion of the bag filter 5 inside the treatment chamber 2 wider
than the surface width of the dispersion plate 212 or larger than the surface
area of the dispersion plate 212, it is possible to cause gas that has flowed
into the treatment chamber 2 to be discharged at a lower rate at an axial
region inside the treatment chamber 2 where centrifugal force is weak and
discharge rate is fast. It is possible to carry out optimal operation control of
introduction and discharge of gas for fluidized bed behavior.
