FLUIDIZED BED APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a novel and improved fluidized bed apparatus capable of controlling the classification point of a raw material more precisely and improving a classifying efficiency.SOLUTION: According to an aspect of the invention, a fluidized bed apparatus comprises: a fluidized bed section where a fluidized bed of a raw material is formed by a fluidizing gas; a first free board section formed on an upper side of the fluidized bed section having a bosh angle made between a side wall and a horizontal plane and ranging within 65° ± 5°; a second free board section formed on an upper side of the first free board section; and a discharge port formed on an upper side of the second free board section for discharging the fluidizing gas.