Journal of Metallurgy and Materials Engineering

Vol. 11 No. 1 (2018): JOURNAL OF METALLURGY MATERIALS AND ENGINEERING
Articles

DEPHOSPHORIZATION OF KOTON-KARFE IRON ORE BY LEACHING WITH SULPHURIC ACID

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  • F. Asuke ,
  • S.A. Yaro,
  • A.P.I Poopola,
  • O. Aponbiede

Published 12-06-2024

How to Cite

DEPHOSPHORIZATION OF KOTON-KARFE IRON ORE BY LEACHING WITH SULPHURIC ACID. (2024). Journal of Metallurgy and Materials Engineering , 11(1), 47-54. https://jmme.nigerianmetsociety.org/index.php/home/article/view/17

Abstract

Dephosphorization of Koton-karfe iron ore Kogi State, Nigeria has been studied. Sulphuric acid was used to leach 355 +250µm and -180 +125µm size fractions, the analysis was carried out using X–Ray fluorescence (XRF) Spectrometer andinductively-coupledplasma optical emission spectroscopy(ICP-OES). The leaching was conducted under varying time, concentration, agitation and temperature. The optimum leaching conditionswere attained at a time of 80minutes, concentration of 0.9M, agitation of 500rpm and temperature of 30oC. leaching of -355 +250µm and -180 +125µm particle sizes at optimum condition gave 41.41 and 45.40% dephosphorization respectively. This indicates that mostly phosphorus associated with AlPO4is leached. ICP-OES results reveal that the iron that dissolved in the leach liquor is minimal, and the pH measurements reveal minimal amount of acid is used, therefore acid can be reclaimed and recycled. 

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