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Fluidization behavior of the mixture of SiO2 and TiO2 nanoparticles by adding FCC coarse particles was investigated. The results showed that the fluidization quality of the mixture system can be obviously improved with adding FCC coarse particles. The size and mass percentage of FCC coarse particles are very important to the fluidization behavior of nanoparticle mixtures. For the mixture system of SiO2 and TiO2 nanoparticles, the minimum fluidization velocity decreases obviously for the optimum adding FCC size (61 to 90μm) and the FCC adding percentage of 30%. The observation showed that the majority of the agglomerates were looser and smaller for the samples obtained in the upper of the bed. Adding the FCC coarse particles to the mixture of the content of SiO2 nanoparticles of 30%, 50% and 70%, the minimum fluidization velocity of the mixture system was dropped to 0.062, 0.058, 0.053 m/s, respectively

Fluidization of Mixed SiO2 and TiO2 Nanoparticles with FCC Coarse Particles