Fundamentals of silico-ferrite of calcium and aluminum (SFCA) and SFCA-I iron ore sinter bonding phase formation: effects of CaO:SiO2 ratio

Simple item page
dc.contributor.authorWebster, NASen_AU
dc.contributor.authorPownceby, MIen_AU
dc.contributor.authorMadsen, ICen_AU
dc.contributor.authorStuder, AJen_AU
dc.contributor.authorManuel, JRen_AU
dc.contributor.authorKimpton, JAen_AU
dc.date.accessioned2016-12-09T03:33:27Zen_AU
dc.date.available2016-12-09T03:33:27Zen_AU
dc.date.issued2014-07-22en_AU
dc.date.statistics2016-12-06en_AU
dc.description.abstractEffects of basicity, B (CaO:SiO2 ratio) on the thermal range, concentration, and formation mechanisms of silico-ferrite of calcium and aluminum (SFCA) and SFCA-I iron ore sinter bonding phases have been investigated using an in situ synchrotron X-ray diffraction-based methodology with subsequent Rietveld refinement-based quantitative phase analysis. SFCA and SFCA-I phases are the key bonding materials in iron ore sinter, and improved understanding of the effects of processing parameters such as basicity on their formation and decomposition may assist in improving efficiency of industrial iron ore sintering operations. Increasing basicity significantly increased the thermal range of SFCA-I, from 1363 K to 1533 K (1090 °C to 1260 °C) for a mixture with B = 2.48, to ~1339 K to 1535 K (1066 °C to 1262 °C) for a mixture with B = 3.96, and to ~1323 K to 1593 K (1050 °C to 1320 °C) at B = 4.94. Increasing basicity also increased the amount of SFCA-I formed, from 18 wt pct for the mixture with B = 2.48 to 25 wt pct for the B = 4.94 mixture. Higher basicity of the starting sinter mixture will, therefore, increase the amount of SFCA-I, considered to be more desirable of the two phases. Basicity did not appear to significantly influence the formation mechanism of SFCA-I. It did, however, affect the formation mechanism of SFCA, with the decomposition of SFCA-I coinciding with the formation of a significant amount of additional SFCA in the B = 2.48 and 3.96 mixtures but only a minor amount in the highest basicity mixture. In situ neutron diffraction enabled characterization of the behavior of magnetite after melting of SFCA produced a magnetite plus melt phase assemblage. © 2014, The Minerals, Metals & Materials Society and ASM International.en_AU
dc.identifier.citationWebster, N. S., Pownceby, M., Madsen, I., Studer, A., Manuel, J., & Kimpton, J. (2014). Fundamentals of silico-ferrite of calcium and aluminum (SFCA) and SFCA-I iron ore sinter bonding phase formation: effects of CaO:SiO2 ratio. Metallurgical and Materials Transactions B, 45(6), 2097-2105. doi:10.1007/s11663-014-0137-5en_AU
dc.identifier.govdoc7679en_AU
dc.identifier.issn1543-1916en_AU
dc.identifier.issue6en_AU
dc.identifier.journaltitleMetallurgical and Materials Transactions Ben_AU
dc.identifier.pagination2097-2105en_AU
dc.identifier.urihttp://dx.doi.org/10.1007/s11663-014-0137-5en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/8131en_AU
dc.identifier.volume45en_AU
dc.language.isoenen_AU
dc.publisherSpringer Linken_AU
dc.subjectCalciumen_AU
dc.subjectAluminiumen_AU
dc.subjectIronen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectMagnetiteen_AU
dc.subjectTemperature dependenceen_AU
dc.titleFundamentals of silico-ferrite of calcium and aluminum (SFCA) and SFCA-I iron ore sinter bonding phase formation: effects of CaO:SiO2 ratioen_AU
dc.typeJournal Articleen_AU
Files
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Journal Articles