Solution: a droplet of a liquid raw material for granulation is dripped onto a fluidized bed consisting of a coating agent particle, and a flow rate (mm / MS) of a fluidized bed at this dropping position, an interval (mm) of a droplet before and after dropping down, a diameter (mm) of the liquid droplet, and a dropping rate (mm / MS) of the liquid drop are The drop / flow conditions are set so as to satisfy the relation of the following expression (1).(droplet diameter and flow rate) / (droplet spacing rate)In this case, a phenomenon in which a plurality of droplets interfere with each other in a fluidized bed and the uniformity of the shape and particle size is reduced is effectively prevented, and a granular material having a higher particle size distribution and excellent in uniformity in shape and particle size can be obtained more reliably and efficiently.Diagram【解決手段】造粒用液体原料の液滴を被覆剤粒子からなる流動床に滴下すると共に、この滴下位置における流動床の流動速度（ｍｍ／ｍｓ）と、間歇的に滴下する前後の液滴の間隔（ｍｍ）と、該液滴の直径（ｍｍ）と、該液滴の滴下速度（ｍｍ／ｍｓ）とが、下記式（１）の関係を満足するように滴下／流動条件を設定する。 （液滴直径÷流動速度）／（液滴間隔÷滴下速度）≦２・・・（１）【効果】流動床中で複数の液滴同士が干渉してしまい形状や粒径の均一性が低下する現象が効果的に防止され、よりシャープな粒度分布を有する、形状及び粒径の均一性に優れた粉粒体が、より確実かつ効率的に得られる。【選択図】図１
