Correlation of Viscosity of Un-Flocculated and Flocculated Kaolin Slurries with Temperature

The effect of temperature on the flow curves of both un-flocculated and flocculated kaolin slurries at 40% by mass concentration over the temperature range of 21ºC and 89ºC has been studied previously (Zengeni et al., 2019). A co-axial cylinder viscometer was used to make flow curve measurements over the shear rate range of 10 to 300 s-1. These data have been re-analysed using the power law model and the effect of Brownian motion on determining the rheological behaviour assessed. The slurry relative viscosity has been found to correlate well with a dimensionless quantity, the Colloid number