The Effect of Deflocculants Type and SiC Content on the Properties of Al2O3-SiC Low-Cement Vibration Refractory Castables

Azimi, J.; Azimi, D.; Otroj, S.; Nemati, Z. A.

doi:10.30501/jamt.2010.70144

The Effect of Deflocculants Type and SiC Content on the Properties of Al2O3-SiC Low-Cement Vibration Refractory Castables

Authors

J. Azimi ¹

D. Azimi ²

S. Otroj ³

Z. A. Nemati ⁴

¹ Yazd Faranasooz ,Co. Yazd, Iran

² Yazd Faranasooz Co. Yazd, Iran

³ Faculty of Engineering, Sharekord University , Shahrekord, Iran

⁴ Faculty of Materials Engineering, Sharif University, Tehran, Iran

10.30501/jamt.2010.70144

Abstract

In this research, the effect of deflocculants type and SiC content on the properties of Al2O3-SiC low-cement vibration refractory castables has been studied. For this reason, particle size distribution was formulated according to Andreasen's model with q=0.28. Then, three deflocculating agents such as TPP, PAA and PCE have been used and their effects on the flow ability, physical and mechanical properties, and microstructure of these refractory castables have been evaluated. The results showed that type and content of deflocculants used have a great effect on the properties of these refractory castables. By use of proper deflocculant such as PCE (0.06 wt.%), Al2O3-SiC low-cement refractory castables with suitable physical and mechanical properties can be obtained. On the other hand, increasing of SiC content can reduce flow ability, density and mechanical strength of these refractory castables.

Keywords

Refractory Castable

Alumina-Silicon carbide

Low-cement

Vibrocast

additives