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Beneficiation of Ka’oje (Nigeria) Ferruginous Manganese Ore for Metallurgical Applications

Journal article published in 2016 by R. A. Muriana, O. K. Abubakre, E. Mudiare, S. Ndlovu, A. W. Issa, A. I. Arogundade
This paper is available in a repository.
This paper is available in a repository.

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Abstract

Samples of ferruginous manganese ore (31.01%MnO2 average composition) from Ka’oje deposit were beneficiated through froth flotation and low intensity magnetic separation techniques. Magnetizing roasting was carried out on the ore samples as a prelude to the magnetic separation. Froth flotation process, using multipurpose oleic acid as the sole reagent, rendered manganese-bearing mineral particles floatable in a selective manner. The froth flotation technique proved most effective as it generated 81.46% MnO2 assay recovery at -53μm particle sizes. Magnetic separation under roasting conditions of 550oC retention temperature, two hours of roasting time and particle size rang -500+355 μm produced top MnO2 assay of 45.89%. The ferruginous manganese ore samples were successfully upgraded to metallurgical manganese concentrates which could be used as feed in ferromanganese production and provided Nobel process routes for effective beneficiations of the ore. Keywords: Ferruginous, hydrophobic, retention temperature and roasting