摘要
以不同粒径的ＳｉＣ为物料，考察了表观气速和添加颗粒对其流化性能的影响．实验表明，平均粒径大于１０μｍ的ＳｉＣ物料，可通过增大表观气速使其流化；而小于５μｍ的ＳｉＣ５和ＳｉＣ２物料，不能使用增大表观气速的方法使其流化．添加颗粒能使ＳｉＣ５很好流化，利用流态化聚团准数Ａｅｆ可计算颗粒的最佳添加量ｘｍ．
The effect of gas velocity and additive particles on the fluidization behavior of SiC powders of different size were obs erved in this work. Experimental results show that SiC with average size larger than 10 μm can be fluidized by increasing gas velocity, but SiC5 and SiC2 (smaller than 5μm) can not be fluidized by increasing gas velocity only. SiC5 may be fluidized by adding another kind of particles. Optimum additive amount can be well correlated with the dimensionless fluidized agglomerate number Aef.
出处
《化工冶金》
CSCD
北大核心
1998年第3期231-236,共6页
关键词
流态化
粘附性颗粒
聚团
添加颗粒
Fluidization, Cohesive particles, Agglomerate, Additive powders
