New Evaluation Technique for Slurry Characterization by Constant Pressure Filtration

Abstract

A new evaluation technique has been developed for the characterization of slurry compressibility by using conventional constant pressure filtration. In order to estimate the packing fraction of formed cake, we modified Ruth equation and the experimental results were analyzed by using the modified equation based on not the filtrate but the particle volume of formed cake. The cake packing fractions estimated by this equation agreed fairy well with those obtained by measuring the volume and weight of the cake, and therefore this method is useful for the evaluation of the slurry compressibility. Furthermore it was shown that the packing fraction decreased drastically at certain initial slurry concentration for strongly flocculated slurry.