Michel Rigaud–contributing editor
Advanced Boron-Containing Al2O3–MgO Refractory Castables
Article first published online: 24 MAY 2011
© 2011 The American Ceramic Society
Journal of the American Ceramic Society
Volume 94, Issue 10, pages 3467–3472, October 2011
How to Cite
Braulio, M. A. L., Morbioli, G. G. and Pandolfelli, V. C. (2011), Advanced Boron-Containing Al2O3–MgO Refractory Castables. Journal of the American Ceramic Society, 94: 3467–3472. doi: 10.1111/j.1551-2916.2011.04608.x
Supported by FAPESP (Grant No. 07/58987-4).
Fellow, American Ceramic Society.
- Issue published online: 4 OCT 2011
- Article first published online: 24 MAY 2011
- Manuscript Accepted: 28 MAR 2011
- Manuscript Received: 8 FEB 2011
- International Refractory Research and Education (FIRE)
- Magnesita Refratá rios S. A. (Brazil)
- Brazilian Research Funding Agency FAPESP. Grant Number: 07/58987-4
Alumina-magnesia refractory castables present suitable performance during application in steel ladles due to the in situ spinel (MgAl2O4) formation. For the steel industry, an early generation of the spinel phase would be beneficial for the castable performance. Taking this aspect into account, alternatives to replace silica fume, which is the most traditional liquid former inducer in this system, were evaluated in this study, by adding boron-containing compounds. Faster spinel and calcium hexaluminate (CA6) formation was attained through a transient liquid, leading to remarkable creep resistance and hot modulus of rupture of the refractory castables. In this context, a novel route to design in situ spinel-forming castable is presented, with great potential to increase the performance of this class of refractory.