|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||A Comprehensive Investigation on the Sintering Behavior of CaO-SiO2-CaF2-Al2O3 Slags System
||Liang Yu, Shaopeng Gu, Guanghua Wen, Chunhua Ran, Funian Han, Zhe Wang
|On-Site Speaker (Planned)
Sintering behavior were vital significant for the lubrication and transfer heat performance of mold fluxes during the casting process. In this paper, the sintering behavior of CaO-SiO2 slags with different Al2O3 and CaF2 were systematically investigated combining with TG-DSC, XRD, DIL, hemispherical point and SEM techniques. The mineral phase transformation process of slags was understood during the heating process. The results showed that Ca2SiO4 was formed at 1370 °C in CaO-SiO2 slags with 12.63% volume shrinkage. Ca4Si2O7F2 was occurred at 1173 °C with 64.06% volume shrinkage of slags when CaF2 was added to CaO-SiO2 slags. In CaO-SiO2-Al2O3 slags, Ca3Al2O6 was first formed and then transformed into Ca2Al2SiO7 at 1342 °C with 53.63% volume shrinkage. At 1148 °C, the Ca2Al2SiO7 and Ca4Si2O7F2 were coexisted in CaO-SiO2-Al2O3-CaF2 slags with the volume shrinkage of 60.13%. Besides, the solid phase reaction temperatures of slags were decreased by adding CaF2 and Al2O3.
||Phase Transformations, Solidification, Characterization