Agglomerating vibro-fluidization behavior of nano-particles

作者：Yang Jingsi; Zhou Tao^*; Song Lianying

来源：Advanced Powder Technology, 2009, 20(2): 158-163.

DOI：10.1016/j.apt.2008.06.002

• Agglomerating vibro-fluidization
• Agglomerate size
• Nano-particles
• Bed expansion ratio
• Minimum fluidization velocity

An experiment study of agglomerating fluidization behavior of three kinds of nano-particles (SiO(2), TiO(2), ZnO) in vibro-fluidized bed (VFB) has been performed. At certain amplitude (3 mm) of vibrations applied, the minimum fluidization velocity decreases, whilst the equilibrium pressure drop increases with increase in the vibration frequency. The minimum fluidization velocity is nearly independent of the vibration amplitude at almost constant frequency of about 40 Hz, whilst the equilibrium pressure increases. Using the linear regression, the Richardson-Zaki exponents of three kinds of nano-particles have been calculated. R-Z analyses indicate that the particulate fluidization degree of cohesive particles can be greatly improved by vibration force.

• 出版日期2009-3
• 单位中南大学