2020 Volume 60 Issue 5 Pages 876-886
The solidification of “Fe2O3”–CaO–SiO2 liquids in air at a controlled cooling rate of 2.0 K/s for a range of Fe2O3 concentrations in the bulk has been investigated. The compositions investigated were selected such that the bulk compositions were within the hematite primary phase field and had a CaO/SiO2 ratio of 3.46 wt/wt.
Non-equilibrium phase assemblages were formed for all bulk compositions investigated. Specifically, the silico ferrite of calcium (SFC) phase was not formed on cooling. The microstructures and proportions of the phase assemblages formed were found to vary with the Fe2O3 concentration in the bulk.