Beneficiation and Characterization of Wase Galena Deposit Using Gravity and Froth Flotation Techniques
This research investigated the beneficiation of lead in Wase lead ore deposit with the aid of gravity and froth flotation techniques with a view to determine the chemical composition and the mineral content of the crude lead ore; determine the liberation size of the valuable mineral; and to investigate the best technique to produce lead as charge into the blast furnace. The crude ore was crushed and ground to obtain head sample for chemical and mineralogical analyses using Energy Dispersive X-Ray Fluorescence Spectrometer (ED-XRFS) and X-Ray Diffraction (XRD) respectively; and for particle size analysis. The particle size was subjected to air floating machine, Humphrey spiral concentrator, Wilfley shaking table using six kilograms (6kg) as charge and one kilogram (1kg) as charge for froth flotation at the liberation size. The ED-XRFS analysis of the crude ore shows that it contains 68.50% PbO and a lead metal of 66.42% Pb with other associated minerals such as 19.50% Fe2O3, 3.77% ZnO, and 2.08% SiO2 while others are in traces. The mineralogical analysis reveals that the mineral composition of the ore contains 13.38% galena, 6.53% hematite, 3.43%sphalerite, 1.94% azurite and other minerals by weight. The particle size analysis indicates that the liberation size of the ore is at -0.1+0.2 mm. It was discovered that the Wilfley shaking table technique meet the required standard of assay and recovery for the production of lead as charge into the blast furnace and hence, the most suitable technique for the beneficiation of this ore.
Ore, Blast Furnace, Liberation Size, Gravity, Mineral, Beneficiation, Assay, Wilfley
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