Abstract：Minimum fluidization characteristics of binary mixture of particles with significant size difference are studied in cold model perspex experimental equipment with the dimensions of f260 mm′2000 mm. The fluidization curves and characteristic velocities including initial velocity, minimum fluidization velocity, segregated velocity and full fluidization velocity are obtained. It is indicated that fluidization curves could be divided into four zones, corresponding to three states: mixing state, intermediate state and full segregated state. Characteristic velocities of binary mixtures decrease with increasing of mass fraction of fine particles, and the trend is not obvious when mass fraction of fine particles is about 0.4~0.5. Bed voidage of binary mixtures of particles in fixed bed and full fluidization states and volume contraction ratio of binary mixtures of particles arrived at extremum when the mass fraction of fine particles is equal to 0.4.
刘伟伟 范怡平 卢春喜. 大差异双组分混合颗粒的最小流化特性[J]. , 2008, 8(6): 1070-1074.
LIU Wei-Wei FAN Yi-ping LU Chun-xi. Minimum Fluidization Characteristics of Binary Mixtures of Particles with Significant Size Difference. , 2008, 8(6): 1070-1074.