@article { author = {Abbasian, Ahmad Reza and Omidvar-Askary, Najmeh}, title = {The optimization of dispersant content in alumina castable containing nano-titania}, journal = {Advanced Ceramics Progress}, volume = {4}, number = {Issue 3-4}, pages = {16-22}, year = {2018}, publisher = {Materials and Energy Research Center (MERC) Iranian Ceramic Society (ICERS)}, issn = {2423-7477}, eissn = {2423-7485}, doi = {10.30501/acp.2018.92944}, 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.}, keywords = {Alumina refractory castable,Ultra-low cement,Dispersant,Nano-TiO2}, url = {https://www.acerp.ir/article_92944.html}, eprint = {https://www.acerp.ir/article_92944_523ad69260518d06e2fc2247171478a3.pdf} }