To provide a method for drying sintered material pellets by a fluidized bed dryer, the method suppressing separation of fine powder on the sintered material pellet surfaces without sacrificing strength of the sintered material pellets to improve an yield.
In the method for drying, by using the fluidized bed dryer 10, sintered material pellets which have a mean diameter of 3-13 mm and a water content of 8-13 mass% before drying, the sintered material pellets are continuously dried by setting a flow rate of a drying gas A1 supplied to a fluidized bed L consisting of the sintered material pellets to 5-10 Nm/s in a drying chamber pre-process part 11; and setting a flow rate of a drying gas A2 supplied to a drying chamber post-process part 12 to 3-4.5 Nm/s when a water content of the sintered material pellets constituting the fluidized bed L is lowered to 5-7 mass% in the boundary 23 between the drying chamber pre-process part 11 and the drying chamber post-process part 12.
YATSUGAYO KENICHI
NAGAIKE YUKI
Yoshihiro Kurita
Takayuki Imanaka