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

Document Type : Original Research Article


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

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


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.


Main Subjects


    1. Lee, W. E., Vieira, W., Zhang, S., Ahari, K. G., Sarpoolaky, H., and Parr, C., “Castable Refractory Concretes”, International Materials Reviews, Vol. 46, No. 3, (2001), 145-67.
    2. Abdolazizi, S., Naghizadeh, R., Baghshahi, S., “The Comparison of MgO and TiO2 Additives Role on Sintering Behavior and Microstructures of Reaction-Sintered Alumina-Zirconia-Mullite Composite”, Advanced Ceramics Progress, Vol. 1, No. 2, (2015), 11-17.
    3. Mortazavi, A., Razavi, M., Ebadzadeh, T., Ahangari, A.S., “Effect of milling time on the crystallite size and microstructure of Al2O3/Mo Nano composite”, Advanced Ceramics Progress, Vol. 2, No. 3, (2016), 12-16.
    4. Sabooni, S., Karimzadeh, F., Abbasi, M.H., Enayati, M.H., “Evaluation of microstructure and mechanical properties of bulk nanostructured Ti5Si3 and Ti5Si3-Al2O3 nanocomposite”, Advanced Ceramics Progress, Vol. 3, No. 1, (2017), 1-5.
    5. Sako, E., Braulio, M., and Pandolfelli, V., “How Effective Is the Addition of Nanoscaled Particles to Alumina–Magnesia Refractory Castables?”, Ceramics International, Vol. 38, No. 6, (2012), 5157-64.
    6. Badiee, S. H., and Otroj, S., “Effect of Nano-Titania Addition on the Properties of High-Alumina Low-Cement Self-Flowing Refractory Castables”, Ceramics-Silikáty, Vol. 55, No. 4, (2011), 319-25.
    7. Dudczig, S., Veres, D., Aneziris, C. G., Skiera, E., and Steinbrech, R. W., “Nano-and Micrometre Additions of Sio2, Zro2 and Tio2 in Fine Grained Alumina Refractory Ceramics for Improved Thermal Shock Performance”, Ceramics International, Vol. 38, No. 3, (2012), 2011-19.
    8. Otroj, S., and Daghighi, A., “Microstructure and Phase Evolution of Alumina–Spinel Self-Flowing Refractory Castables Containing Nano-Alumina Particles”, Ceramics International, Vol. 37, No. 3, (2011), 1003-09.
    9. Sahoo, N., Rauta, P., Padhi, L., Basir Md, S., Das, S., and Tiwari, J., “Effect of Nano Mgo Addition on the Properties and Performance of Precast Seating Blocks”, Transactions of the Indian Ceramic Society, Vol. 73, No. 2, (2014), 177-80.
    10. Zhigang, L., Fangbao, Y., and Yu, Z., “Effects of Nano Calcium Carbonate on the Properties of Corundum-Based Castables”, Industrial Ceramics, Vol. 29, No. 1, (2009), 31-37.
    11. Braulio, M. A., Castro, J. F., Pagliosa, C., Bittencourt, L. R., and Pandolfelli, V. C., “From Macro to Nanomagnesia: Designing the in Situ Spinel Expansion”, Journal of the American Ceramic Society, Vol. 91, No. 9, (2008), 3090-93.
    12. Braulio, M. a. L., Morbioli, G. G., Bittencourt, L. R. M., and Pandolfelli, V. C., “Novel Features of Nanoscaled Particles Addition to Alumina–Magnesia Refractory Castables”, Journal of the American Ceramic Society, Vol. 93, No. 9, (2010), 2606-10.
    13. Mukhopadhyay, S., and Daspoddar, P., “Role of Nanocrystalline Spinel Additive on the Properties of Low Cement Castable Refractories”, Materials and manufacturing processes, Vol. 21, No. 7, (2006), 669-75.
    14. Amin, M. H., Amin-Ebrahimabadi, M., Rahimipour, M. R., “The Effect of Nanosized Carbon Black on the Physical and Thermomechanical Properties of Al2O3-SiC-SiO2-C Composite”, Journal of Nanomaterials, Vol. 2009, (2009), 1-5.
    15. Yaghoubi, H., Sarpoolaky, H., Golestanifard, F., and Souri, A., “Influence of Nano Silica on Properties and Microstructure of High Alumina Ultra-Low Cement Refractory Castables”, Iranian Journal of Materials Science & Engineering, Vol. 9, No. 2, (2012), 50-58.
    16. Gogtas, C., Lopez, H. F., and Sobolev, K., “Effect of Nano-Ysz and Nano-Zro2 Additions on the Strength and Toughness Behavior of Self-Flowing Alumina Castables”, Ceramics International, Vol. 42, No. 1, Part B, (2016), 1847-55.
    17. Studart, A., Pandolfelli, V., and Gallo, J., “Dispersants for High-Alumina Castables”, American Ceramic Society Bulletin, Vol. 81, No. 4, (2002), 36-44.
    18. Studart, A. R., and Pandolfelli, V. C., “Surface Chemistry as a Tool for the Development of Advanced Refractory Castables”, In Refractories Handbook, edited by Charles Schacht, 335-67: CRC Press, 2004.
    19. Abbasian, A. R., Rahimipour, M. R., Nouranian, H., Salardini, A. A., Amin, M. H., “Effect of Deflocculants on Microsilica Containing Ultra Low Cement Al2O3-SiC Refractory Castable”, Industrial Ceramics, Vol. 30, No. 2, (2010), 113-19.
    20. Abbasian, A.R., Omidvar-Askary, N., “Microstructural and mechanical investigation of high alumina refractory castables containing nano-titania”, Ceramics International, Vol. 45, No. 1, (2019), 287-298.
    21. Omidvar-Askary, N., “Influence of nano-titanium oxide on alumina refractory, used in magnesium electrolysis cell”, in: Department of Materials Engineering, Master's degree, Naghshe Jahan Institute of Higher Education, Iran, Isfahan, 2017.
    22. Funk, J. E., Dinger, D. R., “Derivation of the Dinger-Funk Particle Size Distribution Equation”, In Predictive Process Control of Crowded Particulate Suspensions: Applied to Ceramic Manufacturing, 75-83. Boston, MA: Springer US, 1994.
    23. C1445-13, A., “Standard Test Method for Measuring Consistency of Castable Refractory Using a Flow Table”, ASTM International, West Conshohocken, PA, 2013.
    24. C133-97(2015), A., “Standard Test Methods for Cold Crushing Strength and Modulus of Rupture of Refractories”, Standard Test Methods for Cold Crushing Strength and Modulus of Rupture of Refractories, ASTM International, West Conshohocken, PA, 2015.
    25. C20-00(2015), A., “Standard Test Methods for Apparent Porosity, Water Absorption, Apparent Specific Gravity, and Bulk Density of Burned Refractory Brick and Shapes by Boiling Water”, ASTM International, West Conshohocken, PA, 2015.
    26. Studart, A. R., Pandolfelli, V. C., Tervoort, E., and Gauckler, L. J., “Selection of Dispersants for High-Alumina Zero-Cement Refractory Castables”, Journal of the European Ceramic Society, Vol. 23, No. 7, (2003), 997-1004.
    27. Wang, L., Zhang, H., Gao, Y., “Effect of TiO2 Nanoparticles on Physical and Mechanical Properties of Cement at Low Temperatures”, Advances in Materials Science and Engineering, Vol. 2018, (2018), 1-12.
    28. Chen, J., Kou, S.C., Poon, C.S., “Hydration and properties of nano-TiO2 blended cement composites”, Cement and Concrete Composites, Vol. 34, No. 5, (2012), 642-649.
    29. Lee, B.Y., Jayapalan, A., E. Kurtis, K., “Effects of nano-TiO2 on properties of cement-based materials”, Magazine of Concrete Research, Vol. 65, No. 21, (2013), 1293-1302.
Volume 4, Issue 3-4 - Serial Number 14
September 2018
Pages 16-22
  • Receive Date: 20 April 2019
  • Revise Date: 04 June 2019
  • Accept Date: 22 June 2019
  • First Publish Date: 22 June 2019