Abstract
The interest in handling granular materials in a variety of industrial processes carried out at high temperature raises the question of how this variable affects the fluidization quality not only in the case of cohesive particles, belonging to Geldart’s C powders, but also of powders classified as A. The aim of this work is, therefore, to study, from both an experimental and phenomenological point of view, the effect of temperature on the fluidization of two different powders belonging to groups A and C of Geldart’s classification. In particular, fluidization tests were performed at different temperatures (20–800 °C) and using acoustic fields of different intensities (130–150 dB) and frequencies (50–200 Hz) to highlight the influence of interparticle forces (IPFs) on the fluidization quality with increasing temperature. Pressure drops and bed expansion curves were elaborated to show the influence of temperature on minimum fluidization velocity and size of fluidized particles. Then the validity of differen...
Published Version
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