Abstract
In this study, fluidization and hydrogen reduction of fine Fe2O3 particles with magnetic field were investigated. Fine Fe2O3 particles, belonging to Geldart group C, undergo heterogeneous fluidization by conventional fluidization. The agglomeration of products during conventional fluidization of fine Fe2O3 particles was verified, and the pressure drop showed no tendency. The pressure drop stabilized, the magnetic field caused the interparticle force to decrease. High-quality Products without agglomeration were produced under the influence of a magnetic field. With the assistance of the magnetic field, the products showed chain structure after hydrogen reduction. Analysis based on a shrinking core model confirmed that oxygen and iron were distributed on the surface and in the center of the particles, respectively. Studies on the problems associated with conventional fluidization, improvement of magnetic field assisted fluidization and reduction were conducted.
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