1987 Volume 73 Issue 10 Pages 1329-1336
The dense wustite plates containing SiO2 and CaO were reduced isothermally in H2 gas stream over a temperature range of 670 to 930°C. The wustite samples used in this work consist of FeO phase dissolving SiO2 and CaO, Fe-Ca olivine and dicalcium silicate. It was clear that the reduction rate of the samples was affected mainly by the additives dissolved in FeO phase and slightly by the complex oxides. By the presence of very small amount of SiO2 dissolved in FeO phase the reduction was promoted at temperatures above 800°C and retarded at temperatures below 730°C. The reduction was promoted very much by the presence of dissolved CaO over a temperature range of this work. It was recognized that the effect of these dissolved oxides on the reduction rate originated from their effect on the morphology of the reduced iron.
