K. Ionkov, O. Gomes
Phosphorus in iron ores is considered as a deleterious component to iron making reflecting in cold shortness of the produced steel. The present study investigates the phosphorus migration pattern resulting from thermal treatment of an oolitic-type iron concentrate with and without additives. To this end focused mineralogical and microscopic observations were performed. The results have shown that roasting with alkaline additive drives phosphorus outside the hematite hosting mineral, however it remains evenly distributed inside the volume of the oolites. It penetrates inside the newly formed cementing phases of Al-Na-Si-Fe-type and also fills the interstices between the crystals. Other than phosphorus, aluminum, calcium and iron tend also to migrate towards the amorphous-type cementing phase. Finally, the possibilities for P removal by means of magnetic separation and acid leaching of the roasted concentrate were evaluated. The obtained final product presents a standard iron concentrate suitable for steelmaking with its phosphorous being dropped from 0.71% to 0.05% and iron grade of a nearly 66% being reached.
@article{ad7d1552-e0b2-4bb2-bedc-8aa65ccafb51,
title={PROCESS ORIENTED CHARACTERIZATION OF OOLITIC IRON CONCENTRATE DURING DEPHOSPHORISATION BY ROASTING AND LEACHING},
author={K. Ionkov and O. Gomes},
year={2012},
language={en}
}TY - JOUR TI - PROCESS ORIENTED CHARACTERIZATION OF OOLITIC IRON CONCENTRATE DURING DEPHOSPHORISATION BY ROASTING AND LEACHING AU - K. Ionkov AU - O. Gomes PY - 2012 LA - en ER -
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