Compressive Strength and Capillary Pressure: Competing Properties of Particulate Suspensions that Determine the Onset of Desaturation
Anthony D Stickland, Hui-En Teo, George V Franks, Peter J Scales
Drying Technology | TAYLOR & FRANCIS INC | Published : 2014
The drying of particulate suspensions is important to many industries such as paints, ceramics, minerals processing, and pharmaceuticals. Cakes or films first consolidate due to capillary pressure and, at a critical concentration, stop consolidating and begin to desaturate. Desaturation occurs once the compressive strength of the particulate network is greater than the maximum capillary pressure at the air-liquid interface. This work combines existing descriptions of the compressive strength and the maximum capillary pressure to give the dependencies of volume fraction, particle size, interparticle bond strength, surface tension, and contact angle on the breakthrough pressure and critical co..View full abstract
The authors acknowledge funding by the Australian Research Council through the Discovery Projects scheme and the Particulate Fluids Processing Centre, a Special Research Centre of the Australian Research Council. Hui-En Teo acknowledges funding by Brown Coal Innovation Australia.