August 2022
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Mineral Processing and Extractive Metallurgy Review
A Floatex density separator was used to reduce the silica and alumina contents of a low-grade iron ore plant reject sample from the Pilbara region in Western Australia to produce a high-quality iron ore concentrate suitable for use in sinter and pellet blends. From a −2.0 mm head sample containing 49.42 wt% Fe, 12.77 wt% SiO2 and 4.90 wt% Al2O3, a product of 56.66 wt% Fe (63.29 wt% Fe calcined) with 4.91 wt% SiO2 and 2.55 wt% Al2O3 was obtained with a mass recovery of 70%, an iron recovery of 80% and rejection of 72% silica and 58% alumina.