Abstract
The successful upgrading of the sinter grade of the Nigerian Itakpe iron ore which was originally earmarked as blast furnace feed, to a super-concentrate with a higher Fe content to meet the requirement of the Midrex Direct Reduction based Plant at the Delta Steel Company, for large scale manufacture of iron and steel led to the need to carry out pilot scale reduction experiments for the purpose of setting up suitable process and operating parameters. The parameters examined in the experiments include the effect of change in reduction temperature on the percentage of oxygen removal or reduction degree, effect of reducing gas flow rate, product discharge rate, oxide pellet size, H2/CO ratio on the percentage of oxygen removed or reduction degree. It was observed that the patterns noticed were similar to those obtained in the reduction of most imported oxide feed for the direct reduction process. A reduction temperature of 760OC, a pellet size of 1.2mm diameter and an H2/CO ratio of 1.5 were found to be suitable for a successful reduction of the Itakpe iron ore. A reduction temperature increase beyond this value would be accompanied by a corresponding increase in the product discharge rate.
Keywords
Direct reduced iron, Itakpe iron ore, Oxide pellets, Reducibility
Citations
IRE Journals:
Olayebi. O , Ogbeide S. E
"Reducibility Tests on Itakpe Iron Ore" Iconic Research And Engineering Journals Volume 5 Issue 5 2021 Page 86-99
IEEE:
Olayebi. O , Ogbeide S. E
"Reducibility Tests on Itakpe Iron Ore" Iconic Research And Engineering Journals, 5(5)
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