Progress in the model presented by Bürger et al. in Comput. Chem. Eng. 32 (2008), primarily through the adoption of a new hindered settling function.

Proposition of a method to discretize the variables particle size and volume fraction of species, of a suspension with continuous particle size distribution.

Presentation of a methodology for designing a liquid fluidized bed classifier (LFBC), in the sense of calculating cross-sectional areas.

Development of a methodology of operation of a LFBC, in the sense of handling the control variables such as volumetric flow at the entrances and exits of the unit.