Understanding sulfide capacity of molten aluminosilicates via structural information from ‘Raman’ and ‘NMR’ spectroscopic methodologies

Abstract

The effect of Ca-Mn substitution on the sulfide capacity of the MnO-CaO-SiO2 (-Al2O3-MgO) melts were explained from the Raman scattering data, from which the structure information for the network modifying role and sulfur stabilizing role of Ca2+ and Mn2+ ions were obtained. The effect of Ce2O3 on the sulfide capacity of the MnO-SiO2-Al2O3-Ce2O3 melts were understood based on the structure data, from which the charge compensating role of Ce3+ and the amphoteric behavior of alumina were obtained. Employing the structure analysis, the thermochemical properties such as capacity of the oxide melts with no thermodynamic data can be understood in terms of ‘composition-structure-property’ relationship. © 2016 by The Minerals, Metals & Materials Society.