The fast defluidization method was used to measure the minimum fluidization velocities of binary systems. Based on the experimental data obtained from the published literature and from this work, different correlations used for predicting the minimum fluidization velocities of binary systems were evaluated and compared.On a utilisC la mCthode de dkfluidisation rapide pour mesurer les vitesses minimales de fluidisation de systkmes binaires. A partir des donnCes expCrimentales dCji publikes et d'autres obtenues dans les prksents travaux, diffkrentes corrklations utilisCes pour la prkdiction des vitesses minimales de fluidisation de systkmes binaires ont Ct C Cvaluees et comparCes.Keywords: fluidization of binaries, minimum fluidization velocity, binary solids fluidization. everal methods have been used for determining the