DEVICE FOR PROCESSING PARTICLE

摘要

PROBLEM TO BE SOLVED: To efficiently separate and collect particles of a powder and granular material from a gas, to efficiently return the particles to a particle processing zone and to make cleaning work easy. SOLUTION: The particle processing zone (fluidized bed) 24 for drying or processing the particles 25 of the powder and granular material by passing a gas through the particles 25 in a treating vessel 21 is formed. A particle collecting means 30 for separating and collecting particles in the gas discharged after the particle processing zone (fluidized bed) has been formed and an ejector 31 for sucking the particles separated and collected at the particle collecting means 30 and for returning the particles to the particle processing zone 24 are provided. The particle collecting means 30 is constituted of a spiral passage 30a and a collected particle recovering chamber 30b which is communicated to the outside of the spiral passage 30a via a trap gate 30g, and the collected particle recovering chamber 30b is communicated to a negative pressure generating part 31a of the ejector 31.