Preliminary Characterisation of Thermal Upgrading of Nickel from Saprolite via Selective Reduction: Optimising the extraction process

Fathan Bahfie; Azwar Manaf; Widi Astuti; Fajar Nurjaman; Erik Prasetyo; Diah Susanti; Wahyu Solafide Sipahutar

doi:10.1595/205651324X17066260451022

ISSN: 2056-5135

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

Optimising the extraction process
Authors: Fathan Bahfie¹, Azwar Manaf², Widi Astuti³, Fajar Nurjaman³, Erik Prasetyo⁴, Diah Susanti⁵ and Wahyu Solafide Sipahutar⁶
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Affiliations: ¹ Research Centre of Mining Technology, National Research and Innovation Agency of Indonesia, South Lampung, Lampung, 35361, Indonesia, Physics Department, Faculty of Mathematics and Science, University of Indonesia, F Building, Campus of UI, Depok, West Java, 16424, Indonesia ² Physics Department, Faculty of Mathematics and Science, University of Indonesia, F Building, Campus of UI, Depok, West Java, 16424, Indonesia ³ Research Centre of Mining Technology, National Research and Innovation Agency of Indonesia, South Lampung, Lampung, 35361, Indonesia ⁴ Research Centre of Mining Technology, National Research and Innovation Agency of Indonesia, South Lampung, Lampung, 35361, Indonesia, ; Department of Chemical Engineering, Norwegian University of Science and Technology, Kjemi 4, Gløshaugen, N-7491, Trondheim, Norway ⁵ Metallurgical and Material Engineering Department, Faculty of Industrial Technology and Systems Engineering, Institut Teknologi Sepuluh Nopember, Building MT 2nd Floor, Kampus ITS Sukolilo, Surabaya, East Java, 60111, Indonesia ⁶ Material Department, Institut Teknologi Sumatra, Jalan Terusan Ryacudu, South Lampung, Lampung, 35365, Indonesia
Email:^§[email protected]; *[email protected]
Source: Johnson Matthey Technology Review, Volume 68, Issue 4, Oct 2024, p. 623 - 630
DOI: https://doi.org/10.1595/205651324X17066260451022
- Received: 23 Nov 2023
- Accepted: 29 Jan 2024

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 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.

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/content/journals/10.1595/205651324X17066260451022

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

Johnson Matthey Technology Review 68, 623 (2024); https://doi.org/10.1595/205651324X17066260451022

/content/journals/10.1595/205651324X17066260451022

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Article Type: Review Article

Keyword(s): characterisation; microstructure; phase; saprolite; thermal gravimetry; thermal upgrading

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

Optimising the extraction process

Abstract

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