Effect of FeO on the formation of spinel phases and chromium distribution in the CaO-SiO2-MgO-Al2O3-Cr2O3 system
2013 (English)In: International Journal of Minerals, Metallurgy and Materials, ISSN 1674-4799, E-ISSN 1869-103X, Vol. 20, no 3, 253-258 p.Article in journal (Refereed) Published
Synthetic slag samples of the CaO-SiO2-MgO-Al2O3-Cr2O3 system were obtained to clarify the effect of FeO on the formation of spinel phases and Cr distribution. X-ray diffraction (XRD) and scanning electron microscopy (SEM) equipped with energy-dispersive spectroscopy (EDS), as well as the thermodynamic software FactSage 6.2, were used for sample characterization. The results show that the addition of FeO can decrease the viscosity of molten slag and the precipitation temperatures of melilite and merwinite. The solidus temperature significantly decreases from 1400 to 1250 degrees C with the increase of FeO content from 0wt% to 6wt%. The addition of FeO could enhance the content of Cr in spinel phases and reduce the content of Cr in soluble minerals, such as merwinite, melilite, and dicalcium silicate. Hence, the addition of FeO is conducive to decreasing Cr leaching.
Place, publisher, year, edition, pages
2013. Vol. 20, no 3, 253-258 p.
Research subject Process Metallurgy
IdentifiersURN: urn:nbn:se:ltu:diva-3399DOI: 10.1007/s12613-013-0720-9Local ID: 1387f9f9-d3ad-4714-be47-907c51fd3365OAI: oai:DiVA.org:ltu-3399DiVA: diva2:976257
Validerad; 2013; 20130411 (andbra)2016-09-292016-09-29Bibliographically approved