关键词: 多粒度颗粒, 狭缝式矩形喷动床, 最小喷动速度

Abstract: The minimum spouting velocity of multi-size glass bead mixtures was investigated in a rectangular-slot spouted bed with slot air entry, the width of which varies from 2 mm to 6 mm. The experimental results of single and multi-size particle mixtures show that the minimum spouting velocity of multi-size particles is related with particles diameter and size distribution in the particle mixture. In the present work, the maps of minimum spouting velocity for multi-size particle mixture were obtained, and the empirical relation for minimum velocity Ums was determined to be

Key words: X-ray, fluidized bed, solid concentration