The fluidization characteristics of ultra-fine Al2O3, CaCO3 were studied in a fluidized bed with 40mm i.d. The bed pressure drop, bed collapsing and expanding curves were measured.

• 在直径40mm的流化床中，考察了Al2O3、CaCO3等超细颗粒的流化特性，测定了床层压降变化、床层的坍落及膨胀规律.