Determination of Chemical, Mineralogical Composition And Liberation Size of Madaka Manganese ore, Niger State, Nigeria
Journal Title: Journal of Advanced Research in Manufacturing, Material Science & Metallurgical Engineering - Year 2018, Vol 5, Issue 3
Abstract
This work investigated the chemical, mineralogical and liberation size of Madaka manganese ore prior to beneficiation process. The samples were sourced from two pits (1 and 2) with the following co-ordinates; Pit A: N 10o 03’ 03.0”, E 06o 27’ 50.5”; Pit B: N: 10o 03’ 03.0”, E: 06 27’ 55.5) in Madaka village, Rafi Local Government Area of Niger State. The samples were comminuted and sieved using laboratory jaw crusher, pulverizer and mechanical sieve shaker. The chemical compositions, mineralogical and Scanning Electron Microscopy (SEM) of the head samples were determined using X-ray fluorescence spectrometer (XRF), X-ray diffractometer (XRD) Scanning Electron Microscope with Energy Dispersive Spectrometer (EDS). Sieve size and assay analysis of the ore was carried out on the basis of √2 sieve arrangement and the sieves were vibrated for 15 minutes. The products sieves were analyzed for their manganese contents using XRF. Result showed the chemical analysis of the representative crude sample to contain the following; 3.10, 2.37, 12.32, 0.64, 0.17, 48.44, 0.07, 0.04, 1.86, 0.08 weight percentages of SiO2, Al2O3, Fe2O3, TiO2, CaO, MnO, Cr2O3, Na2O, K2O, SO3 respectively. Peaks were identified in XRD analysis of the crude sample as that of magnosite (MnO), hausmannite (Mn3O4), spessartine and vemuculite (Mg,Fe2+,Fe3+)3[(AlSiO4)O10](OH)2.4H2O. The EDS shows Mn, Ca, Fe, K, As, Al, Si and Ba are the predominant elements while others are minor elements. The sieve size/assay analysis revealed that the liberation size of the ore was -250 +180 μm. The ore can then be classified as a medium grade manganese ore that must be beneficiated before utilization
Authors and Affiliations
F. O. Ogundeji,
Keywords
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