Abstract:
The influence of varying amounts of magnesia, silica, and alumina in iron ore sinter on its mineralogy, reducibility index (RI), reduction
disintegration index (RDI), physical breakdown (AI and TI), and production properties (coke breeze rate) were examined. It was found that the mineralogy of iron sinter can more easily be
predicted from its chemical composition than from the RI, RDI, AI or TI. Anticipating the consequence that varying amounts of MgO and SiO2
would have on sinter properties is complex, and not necessarily predictable. High concentrations of Al2O3 in the sinter result in high
concentrations of the SFCA phase, but with drastically deteriorated properties. This study also confirmed that the form in which fluxes are
added to the raw material sinter mixture affects the mineralogy and properties of the produced sinter.
