Effect of Oxygen Partial Pressure on Liquidus for the CaO-SiO2-FeOx System at 1573 K

Thermodynamic Calculation of Liquidus Surface of FeOx–CaO–SiO2 System

“…2(a), the liquidus surface of the FeO x -CaO-SiO 2 system at P O 2 of 5ϫ10 Ϫ3 atm and 1 573 K predicted by model is compared with the liquidus surface of the system © 2010 ISIJ measured by Pownceby and Clout 3) and by Kimura et al 4) As shown in Fig. 2(a), model prediction agrees with the Pownceby's measurement 3) well, in particular, in FeO x rich region.…”

“…2(a), model prediction agrees with the Pownceby's measurement 3) well, in particular, in FeO x rich region. Figure 2(a) also shows that the liquidus surface measured by Kimura et al 4) is much broader than that from Pownceby and Clout.…”

“…1(a), the hematite saturated liquid boundary reported by Pownceby and Clout 3) shifted slightly but consistently away from the FeO x corner compared with the results by Henao et al 5) and Nikolic et al, 7) which are in good agreement with each other. Figure 4 shows the liquidus surface of the FCS system at 1 573 K and oxygen partial pressure of 10 Ϫ6 atm measured by Kimura et al, 4) Henao et al, 5) Nikolic et al, 6) Matsuura et al 8) and model prediction. As shown in Fig.…”

“…The literature data available up to Year 2000 on the effect of oxygen partial pressure and additions of Al 2 O 3 and MgO on the liquid region of the FeO x -CaO-SiO 2 and its sub-systems are critically reviewed by Yazawa. 2) More experimental [3][4][5][6][7][8] and modelling efforts 9,10) have since been made on the FeO x -CaO-SiO 2 system under the compositional conditions and oxygen partial pressures more relevant to the iron ore sintering process. However, the model prediction 9,10) does not agree with the experimental data by Shigaki et al, 11) particularly in magnetite saturation region.…”

“…ture [3][4][5][6][7][8][11][12][13] and between the experimental data [3][4][5][6][7][8]11) and modelling results. 9,10) In this paper, a modified version of the computational package: Multi-Phase Equilibrium (MPE) software developed by CSIRO, 14,15) was used to quantify the liquidus surface of the FeO x -CaO-SiO 2 system containing Al 2 O 3 and MgO at various intermediate oxygen partial pressures.…”