This paper presents an investigation of the hydrodynamic behavior of a gas-solid magnetically stabilized fluidized bed. It consists of a mixture of spherical steel particles with glass balls subjected to a magnetic field, transverse to the gas flow, which is created by two permanent magnets. Pressure drop, bed stability and expansion are studied. A data correlation in good agreement with experimental results was developed. It takes into account the modification of the bed structure in the presence of two types of particles: steel particles forming chains following the field lines and considered as "pseudo-plate" particles and non-aggregated non-magnetic particles. (C) 2004 Elsevier B.V. All rights reserved.