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Viscosity of Slag Melts Containing Fe<SUB>2</SUB>O<SUB>3</SUB>

DOIFull Paper Access

31

Citations

0

References

1980

Year

Shigeo Sumita, Takashi Mimori, Kenji Morinaga, Tsutomu Yanagase
Journal of the Japan Institute of Metals and Materials

Abstract

Effects of Fe2O3 on the viscosity of silicate and ferrite slag melts have been studied in terms of the oxygen co-ordination number of Fe3+. Fe2O3 was amphoteric oxide like Al2O3 in these melts. Two parameters determining the behavior of Fe2O3 were proposed for these melts. One is the basicity of melts, and the other is the ratio of alkali (R2O)-, alkaliearth(RO)-oxide/Fe2O3 as seen for Al2O3. The portion of Fe3+ (4-co-ordinated oxygen) like Si4+ was increasing with increasing the basicity and/or the alkali-, alkaliearth-oxide/Fe2O3 ratio.In Na2O-Fe2O3 and BaO-Fe2O3 systems, the maximum was observed in viscosity-composition curves at the composition corresponding to Na2O or BaO/Fe2O3\fallingdotseq1. This could be explained by considering a change of the co-ordination number of Fe3+ with Fe2O3 content in the melts.