EFFECTS OF PROCESS VARIABLES ON THE LEACHING OF ITAKPE IRON ORE USING TETRAOXOSULPHATE VI ACID

Mbah, G.O and ILO, S.U. and Nwobelu, Precious Chidinma and Ogbodo, C.N and Anyaene, Harriet Ifeoma (2025) EFFECTS OF PROCESS VARIABLES ON THE LEACHING OF ITAKPE IRON ORE USING TETRAOXOSULPHATE VI ACID. International Journal of Chemical Engineering and Raw Materials Development, 1 (1). pp. 126-133.

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Abstract

Effects of process variables (acid concentration, solid/liquid ratio, temperature and time) on the leaching of Itakpe iron ore were examined. The iron ore sample was obtained from Itakpe, Kogi State, Nigeria. It was ground into a fine powder and then sieved to create fractions of 0.1 mm in size. To determine the type of iron ore, XRD (x-ray deffractometer) was employed. The functional groups of the sample were ascertained using FTIR (Fourier transform infrared) spectrophotometer. The total iron content of the ore was measured using an atomic absorption spectrophotometer and the redox titrimetric method. The iron ore sample was beneficiated by treating it with H2SO4. For subsequent measurements of iron in aqueous solutions, the redox titrimetric method was employed since the two methods did not differ by more than 5%. The experimental screening found that Itakpe iron ore is largely composed of quartz and hematite. The compositions of the ore changed due to acid treatment, with hematite and goethite as dominant iron minerals. Barite, quartz and halite were present as minor minerals. The FTIR analyses revealed the presence of heteroatoms with free electron pairs and substituent groups in the ore. Leaching efficiency of H2SO4 was found to be time, acid concentration, mass/volume ratio and temperature dependent. Maximum value of Fe leached was recorded as 92.05% in the beneficiation process. It showed that H2SO4 is suitable for the leaching of Itakpe iron ore.

Item Type: Article
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Natural and Applied Sciences
Depositing User: Uchenna Eneogwe
Date Deposited: 06 Jun 2025 12:52
Last Modified: 06 Jun 2025 12:52
URI: http://eprints.gouni.edu.ng/id/eprint/4783

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