Abstract
This work aimed to explore the property effects of added magnetizable particles on the magnetic intensification of mass transfer between the fluidizing gas and Geldart-B nonmagnetizable particles. A compromise volume fraction (xvM) of magnetizable particles in the resulting binary admixture was 0.40 to transmit the stabilizing effect of magnetic field to the nonmagnetizable particles and save the bed volume. When xvM was maintained the same (=0.40), the added magnetizable particles had an optimal size/density to maximize the magnetic intensification. When the gas velocity was three times the minimum fluidization velocity of the nonmagnetizable particles, the optimum size and density ratios between the added magnetizable particles and the nonmagnetizable particles were 0.41 and 2.99, respectively. When the mass fraction was kept constant (=0.77), the lighter magnetizable particles were preferred to transmit the magnetic stabilization. The property effects of added magnetizable particles on the magnetic intensification of mass transfer depended on its effects on the hydrodynamics in the resulting admixture MFB. Provided the added magnetizable particles could make the obtained admixture MFB locate in the magnetic stabilization flow regime, the mass transfer could be significantly intensified. The more stable the obtained magnetic stabilization, the better the magnetic intensification of the mass transfer.
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