Novel probe for the investigation of slurry filtration

A novel impedance probe was commissioned specifically for capturing fast dynamic information about filtration processes. It provides an attractive alternative to more complex measurement techniques in situations where the slurry system is primarily one-dimensional. The probe can monitor mudline, slurry densification and drainage. Dynamic variations in cake permeability are obtained by combining dynamic mudline information obtained with the probe and filtrate rate data derived from a leaf test apparatus. The measurements are reviewed in relation to micro structural measurements obtained on iron ore filter cakes. The practical significance of these measurements for optimization of the filtration process is discussed.