LI Xuesong, TAN Kaiqiang, WEI Chongyang, ZHOU Jiachang, ZOU Yiming, ZHAO Huizhong, ZHANG Han
(State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China)

Abstract: High aluminum bauxite was partly replaced by titanium-iron slag and the effect of titanium-iron slag addition on the sintering and slag resistant properties of high aluminum bauxite castable was studied. Castable samples were characterized by ICP and SEM. The results showed that as more titanium-iron slag was added, the samples were denser and showed higher cold strength. Low melting phase in titaniumiron slag could promote the sintering of the samples; and titanium-iron slag was easy to react with the slag and increase its viscosity. It could be separated from the precursor layer to prevent the erosion and penetration of the slag; the combined analysis of the refractoriness under load and microstructure of the static slag resistance test samples indicated the optimum addition of titanium-iron slag was 40 wt.%.

Key words: titanium-iron slag; high aluminum bauxite; castable; slag resistance