Iron ore sinter structure development under realistic thermal conditions

Pore property analysis results showed that increasing maximum temperature, lengthening holding time and slowing heating rate have led to a reduced porosity and more round pore structure. The mechanism of coalescence and densification in iron ore sintering has been explored for the purpose of understanding and quantifying how sinter micro-structure develops and is affected by flame front speed in sintering. The theoretical calculations and experimental results indicated that thermal conditions does have a large impact on micro-structure development. Finally, proposed was a reasonable diagram for micro-structure development in sinter under realistic thermal conditions.