Reduction of iron ore pellets with domestic lignite coal in a rotary tube furnace

Abstract

Abstract In the present work, reduction of iron ore pellets with domestic lignite coal in a semi-pilot scale rotary tube furnace was investigated. The variables of the experimental study were the coal consumption ratio ( CF Fix Fe Tot ), the temperature of the environment and the residence time. At the temperature of 1000°C and a coal consumption ratio of 0.40, reduction process was completed at about 90 minutes residence time where the pellets showed 93% average metallization degree. The results of the experimental study showed similarities with industrial practice.