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image of Preliminary Characterization of Thermal Upgrading of Nickel from Saprolite via Selective Reduction

Abstract

Abstract. The mineralogical properties and distribution of information established in saprolite from Indonesia were investigated using X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopy energy dispersion spectroscopy (SEM–EDS), and differential thermal analysis (DTA) measurements. The findings suggest that laterite ore has a complex inner core. The percentages of Ni, Fe, Mg, Al, and Si in saprolite are given in 1.82, 30.47, 10-20, 4.86, and 8.1 weight percent. Saprolite has 53.1 percent iron oxide/oxyhydroxide, 38.3 percent lizardite and 8.7 percent silicate. According to DTA, saprolite undergoes a phase shift from goethite to hematite at low temperatures (200-300ºC). This is a suitable phase to optimize nickel diffusion in iron. Furthermore, the thermal upgrading approach was utilized for this saprolite.

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2024-01-30
2024-04-25
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  • Article Type: Research Article
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