Understanding filter cake formation through electrical impedance measurements

An electrical impedance tomography technique for determining the solids concentration in solid/liquid mixtures has been used to analyse cake formation during the pressure leaf filtration of aqueous based mineral suspensions. The experimental data are interpreted through so-called ‘modern filtration theory’ which serves to highlight some of the difficulties that currently exist in the areas of both modelling and scale-up in solid/liquid separation.

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CC BY-NC-ND 4.0