傾斜振動板による造粒

概要

論文の詳細を見る
The effect of vibrational force on the granulation of powdered materials flowing down on a chute has been studied. Powder of size under 210μ was fed and flowed down continuously on a vibrated, inclined chute of 340 mm long and 75 mm wide, and a binder solution was sprayed over the vibrating bed so as to cause granulation. The variables investigated were the inclination of the chute, the direction, the amplitude (a) and frequency (n) of the vibration, and the material of the chute, by using several kinds of powdered material. The size distribution of granules obtained showed in general the Rosin-Rammler distribution by mass. For all kinds of powder, the mass mean diameter (d) of the granules formed was found to be given by: d =a{α + (βn)^2}^2G_v^<-3/2> where G_v is the ratio of the vertical component of the maximum vibrational acceleration to the gravitational acceleration, and α and β are constants depending on both the particulated material and the granulating operation.
1978-07-15