Abstract:

In order to optimize the properties of corundum based castable，different kinds of dispersants are added into the corundum based castable bonded with pure aluminate cement． The effects of different kinds of dispersants on the electrokinetic property, rheological property and conventional physical property of the castable matrix slurry are studied systematically．The results show that all of Zeta absolute values of the matrix slurries added with four dispersants are lower, and the Zeta absolute values of the slurries added with high molecular polymer type dispersants are much lower than those of the Zeta absolute values of the slurries added with polyelectrolyte type dispersants. All of four dispersants can reduce the apparent viscosity of matrix slurry remarkably． Their optimum adding amounts are 0.2%，0.7%，0.6% and 0.7% respectively． The corundum based castable added with dispersant FS10 needs lowest amount of water and the various physical properties of the sample are better．