A new experimental technique for the analysis of cake filtration

An electrical conductivity technique for determining cake heights, and hence average concentrations, during stepped-up pressure filtrations is described. Experimental data are presented which compare the results from individual constant pressure filtrations and a filtration employing a sequence of corresponding pressures. The data are analysed in a variety of ways that show the accuracy of the time saving step-up technique when the solids concentration is measured in-situ.