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The optimization of dispersant content in alumina castable containing nano-titania

Publish Year: 1397
Type: Journal paper
Language: English
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JR_ACERPT-4-4_003

Index date: 15 October 2019

The optimization of dispersant content in alumina castable containing nano-titania abstract

In this research, two series of ultra-low cement high alumina refractory castables containing 0 and 0.4 wt.% of nano-titania were prepared using different amounts of polycarbonic acid (DOLAPIX FF 26) as a dispersant. Several characteristics including microstructure, flowability, mechanical strength, bulk density and apparent porosity of the samples were analyzed. The results showed that the optimum amount of the dispersant was 0.13 wt.% and 0.20 wt.% for castable having no nano-titania and the one containing 0.4 wt.% nano-titania, respectively. The strength of castable containing 0.4 wt.% nano-titania dispersed by 0.20 wt.% of DOLAPIX FF 26 was 1.5 times higher than that of castable without nano-titania (dispersed by 0.13 wt.% of DOLAPIX FF 26). This can be explained by the fact that when the optimum amount of dispersant is used, the well-dispersed nano-titania particles act as a catalyst in the cement hydration reactions and will result in higher strength of the refractory castables.

The optimization of dispersant content in alumina castable containing nano-titania Keywords:

The optimization of dispersant content in alumina castable containing nano-titania authors

Ahmad Reza Abbasian

Department of Materials Engineering, Faculty of Engineering, University of Sistan and Baluchestan, Zahedan, Iran

Najmeh Omidvar-Askary

Department of Materials Engineering, Naghshe Jahan Institute of Higher Education, Isfahan, Iran

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