2003 Volume 40 Issue 6 Pages 425-431
The effect of stabilizing additives on the rheology and sedimentation stability of alumina-water slurry was investigated. Three kinds of stabilizing additives, synthetic smectite clay; TXP, carboxymethyl cellulose; CMC#1, and native gellan gum; LT-100, were used in this study. The equilibrium flow curves obtained with a rheometer for aqueous solutions of these additives showed that both TXP and LT-100 give typical shear thinning properties with significant thixotropic behavior. The rheological measurements and sedimentation stability tests for alumina-water slurries suggested that the magnitude of structural stress may be related to the stability of slurries. This information is useful for the preparation and stability evaluation of alumina-water slurries.
