Aspects of Structure of Fluidized Bed Mixture of Magnetic and Nonmagnetic Particles in Magnetic Field

This paper presents experimental data regarding the hydrodynamic of the gas/solid fluidization in a transverse magnetic field of a binary mixture of clay (smectitic acid activated clays) - magnetic particles and of clay particles in classical fluidized bed. The influence of solid (magnetic and non-magnetic particles) characteristics, magnetic field intensity range (0-12000 A.m(-1)), mass fraction (0-100%) of the magnetic particles, type of the mixture (homogeneous or layered) on pressure drop and porosity of the particulated bed was studied. The results confirm that the magnetic field intensity has a large influence on stability of magnetic particles in the monocomponent bed and in the mixture where it may form special "layers" modifying the whole bed behaviour. The results are promising and the "homogenous" bed operating mode has an interesting potential for application in adsorption of polluted gases on clay based adsorbents.