|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||9th International Symposium on High Temperature Metallurgical Processing
||Viscosity of CaO-SiO2-based Mold Flux with CeO2 for Continuous Casting of RE Alloyed Heavy Rail Steels
||Zeyun Cai, Bo Song, Zhen Liu, Xiaokang Cui, Lei Wang
|On-Site Speaker (Planned)
In order to find out the influences of CeO2 on the viscosity of CaO-SiO2-based mold flux designed for casting of rare earth alloyed heavy rail steels, the viscosity, structure and crystallization characteristics of slag were investigated by the rotating cylinder method, Raman spectroscopy and X-ray diffraction(XRD). It turned out that the slag had a breaking temperature with no CeO2, and the viscosity and breaking temperature decreased after adding CeO2. With the increasing CeO2, the viscosity showed a fast decreasing rate below the breaking temperature. However, the decreasing tendency began to be slower above the turning point. Moreover, the results of Raman and XRD were confirmed that CeO2 enhanced the depolymerization of the mold flux above the breaking temperature gently, and the crystal phases precipitated rapidly with the decreasing temperature, especially the high melting point solid dispersion, CeO2•CaO•2SiO2.