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 nickel, iron, magnesium, aluminium and silicon in saprolite are 1.82 wt%, 30.47 wt%, 10–20 wt%, 4.86 wt% and 8.1 wt%. Saprolite has 53.1 wt% iron oxide/oxyhydroxide, 38.3 wt% lizardite and 8.7 wt% silicate. According to DTA, saprolite undergoes a phase shift from goethite to haematite at low temperatures (200–300°C). This is a suitable phase to optimise nickel diffusion in iron. Furthermore, the thermal upgrading approach was utilised for this saprolite.

Fathan Bahfie

Azwar Manaf

Widi Astuti

Fajar Nurjaman

Erik Prasetyo

Diah Susanti

Wahyu Solafide Sipahutar

Johnson Matthey Technology Review

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Category	Quartile
化学	4
化学, 物理化学	4

Preliminary Characterisation of Thermal Upgrading of Nickel from Saprolite via Selective Reduction

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Journal Info

Category	Quartile
CHEMISTRY, PHYSICAL	4