Abstract
ABSTRACT The characteristics of iron ore fines were considered to have tremendous effects on their subsequent sintering performances, but it is difficult to judge their sintering performances only based on their basic physicphysio-chemical properties. In this study, the correlation between the fundamental high temperature properties of seven commercial Australian iron ore fines and their single-ore sintering performance were revealed by measuring the lowest assimilation temperature (LAT), index of fluidity of liquid phase (IFL), strength of bonding phases (SBP) and the percentage of formed silicoferrite of calcium and aluminium (SFCA) of the iron ores and conducting pilot scale sintering pot tests. The results showed that the correlation is very complicated. There is a negative correlation between the tumble index (TI) of sinter products and LAT of iron ore fines. Iron ore fines have better sintering performance within the appropriate range of IFL between 0.17 and 0.88. The correlativity between SBP, percentage of formed SFCA (PFS) and the sintering performance of iron ore fines is complex.
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