Effect of Different Additives on Soluble Silicate Bond

Soluble silicate (sodium silicate) has been used as bond in ceramic and refractories industry for a long time. The versatile nature of this material resulting from alkali silica reaction offered several advantages in many fields of refractory application. Additional advantages with respect to strength and rapid setting can be obtained by incorporating foreign ions, which reacted with colloidal micelles of silica in solution. Studies were undertaken with different additives for finding out the effect on strength and setting characteristics with aluminous and siliceous base materials. The mixtures were fired at various temperatures and their properties were evaluated.