The minimum fluidisation velocity, bed expansion and pressure-drop profile of binary particle mixtures

Experimental Analysis of the Fluidization Process of Binary Mixtures of Solids

“…When the same solids are initially arranged in the fixed bed as two segregated layers, with the fine component on top, the data of Fig. 4 are well represented by the equation proposed by Chiba et al [6] …”

“…It has often been reported that, given the mixture composition, u mf is not unique, as it can significantly change with the solids distribution within the fixed bed [6][7][8][9]. Moreover, different values of u mf are obtained depending on whether it is measured at increasing or decreasing gas velocity.…”

Influence of Particle Size Distribution on Agglomeration/defluidization of Iron Powders at Elevated Temperature

“…The U mf and U bb for the three types of mixing were typically in the following sequence: completely segregated > partial mixing > completely mixed. 19,20,23) Gauthier 19) indicated that the behaviors of binary and flat distributions were favorable to segregation, while Gaussian and narrow distributions tended to move complete mixing. Therefore, binary and flat distributions moved to segregate readily, and exhibited a higher U mf and U bb .…”

The interaction between mixture components in the mechanism of binary fluidization

“…Such an approach is alternative to that traditionally followed by many authors [7][8][9][10][11][12][13]; in their investigations, the binary mixture subjected to fluidization is always regarded as the equivalent of a monosolid system whose particle density and size are defined by suitable averages of those of its components. These average parameters are then introduced into well-established equations devised for calculating the minimum fluidization velocity of monocomponent beds without any theoretical justification.…”