|About this Abstract
||2014 TMS Annual Meeting & Exhibition
||Celebrating the Megascale: An EPD Symposium in Honor of David G.C.Robertson
||Viscosity-Structure Relationship in the CaO-SiO2-MnO-CaF2 Slag for the Production of Mn Ferroalloys
||Joohyun Park, Kyuyeol Ko
|On-Site Speaker (Planned)
Viscosity of the CaO-SiO2-MnO-CaF2 slags was measured to clarify the effect of CaF2 on the viscous flow of molten slags at high temperatures. Furthermore, the Raman spectra of the quenched glass samples were quantitatively analyzed to investigate the structural role of CaF2 in a depolymerization of silicate networks. The viscosity of the slags continuously decreased by CaF2 addition in the 10% MnO system, whereas the viscosity of the 40% MnO system was not significantly affected by CaF2 addition. The effect of CaF2 on the viscosity of the slags was quantitatively analyzed using Raman spectra of quenched samples accompanying with a concept of silicate polymerization index, Q3/Q2 ratio. A polymerization index continuously decreased with increasing content of CaF2 in the 10% MnO system, whereas it was not affected by CaF2 in the 40% MnO system. Consequently, the bulk thermophysical property of the CaO-SiO2-MnO-CaF2 slags was quantitatively correlated to the structural information.
||Planned: A print-only volume