화학공학소재연구정보센터
Powder Technology, Vol.304, 101-107, 2016
Fluidization behavior of binary iron-containing nanoparticle mixtures in a vibro-fluidized bed
The present work is focused on the fluidization behavior of different mixed binary nanoparticles (Fe2O3 + SiO2, Fe2O3 + TiO2, and Fe2O3 + ZnO) under the influence of a vibrated field. The results reveal that the iron containing nanoparticle mixtures with different mass fractions can achieve uniform fluidization in the initial bed height of 40 mm, amplitude of 3.0 mm, vibration frequency of 40 Hz, and binary mixtures containing nano-SiO2 and nano-Fe2O3 have commendable fluidization behavior. Richardson-Zaki equation index indicates that the particulate dispersion degree of the different proportion mixtures increases as the mass fraction of APF (agglomerate particulate fluidization) nanoparticle increases. For a binary nanoparticle mixture containing different proportions of high content nano-SiO2 and nano-Fe2O3, n/4.65 is closer to 1 and the relative deviation is smaller than that containing a high content TiO2 and ZnO, indicating that the system has a good dispersibility. (C) 2016 Elsevier B.V. All rights reserved.