Device for treating powder particles by rotary flow

A rotating fluidized bed apparatus for powder particle comprising, inside a casing,

• a rotatable treatment chamber being provided with cylindrical gas ventilation means having permeability circumferentially about its axis,
• gas introduction means provided at the periphery of the treatment chamber for causing gas to flow into the treatment chamber via the gas ventilation means, and
• a bag filter, provided inside the treatment chamber, for discharging gas that has been introduced into the treatment chamber to the outside,
• wherein the bag filter has an arrangement proportion inside the treatment chamber such that said proportion inside the treatment chamber is wider than a surface width of the gas ventilation means, or larger than the surface area of the gas ventilation means.

A rotating fluidized bed apparatus for powder particle comprising, inside a casing,

• a rotatable treatment chamber being provided with cylindrical gas ventilation means having permeability circumferentially about its axis,
• gas introduction means provided at the periphery of the treatment chamber for causing gas to flow into the treatment chamber via the gas ventilation means, and
• a bag filter, provided inside the treatment chamber, for discharging gas that has been introduced into the treatment chamber to the outside,
• wherein the gas introduction means is comprised of a gas introduction passage formed between the casing and the ventilation means, and a plurality of supply ports provided at intervals on an inner wall forming the gas introduction passage.