TY - GEN
T1 - Effect of sulfur content in reductants with variations of 0.5-1.5 stoichiometry in the selective reduction process of saprolitic nickel ore
AU - Simatupang, Anggi
AU - Nurjaman, Fajar
AU - Suharno, Bambang
AU - Ferdian, Deni
N1 - Funding Information:
The authors would like to thank Universitas Indonesia for the PUTI 2020 Grant with Contract No. NKB-1066/UN2.RST/HKP.05.00/2020 and Indonesian Institute of Sciences for funding the research and publication, respectively, and also LIPI's Science Services for Research Laboratories.
Publisher Copyright:
© 2021 Author(s).
PY - 2021/8/10
Y1 - 2021/8/10
N2 - Indonesia supply accounts for 16 % of the world's lateritic nickel ore, with the estimation reaching 1.391 billion tons. The process of refining lateritic nickel ore can be considered as one of the main problems faced by the world mining industry, taking into account the economic and energy aspects. This research was carried out to investigate the effect of sulfur in reductants on the selective reduction process of saprolitic nickel ore. This research used saprolitic ore using 10 wt.% additives (sodium sulfate). Two kinds of coal reductants containing 2.68 % and 5 % of sulfur were also used. Nickel ore, additives, and reductant were mixed homogenously prior to the pelletization into a diameter of 10-15 mm. The reduction of pellets was carried out at temperature variations of 950, 1050, and 1150 °C for 60 minutes, followed by magnetic separation using 400-600 Gauss of the magnetic field to separate magnetic-concentrate, which contains ferronickel, and non-magnetic tailing, which contain impurities. The reduced ore characterization was performed by using X-ray Diffraction, Optical Microscope, X-ray Fluorescence, and Scanning Electron Microscope. This research showed that the optimum nickel grade and recovery were obtained using 2.68 % of sulfur content in coal reductant.
AB - Indonesia supply accounts for 16 % of the world's lateritic nickel ore, with the estimation reaching 1.391 billion tons. The process of refining lateritic nickel ore can be considered as one of the main problems faced by the world mining industry, taking into account the economic and energy aspects. This research was carried out to investigate the effect of sulfur in reductants on the selective reduction process of saprolitic nickel ore. This research used saprolitic ore using 10 wt.% additives (sodium sulfate). Two kinds of coal reductants containing 2.68 % and 5 % of sulfur were also used. Nickel ore, additives, and reductant were mixed homogenously prior to the pelletization into a diameter of 10-15 mm. The reduction of pellets was carried out at temperature variations of 950, 1050, and 1150 °C for 60 minutes, followed by magnetic separation using 400-600 Gauss of the magnetic field to separate magnetic-concentrate, which contains ferronickel, and non-magnetic tailing, which contain impurities. The reduced ore characterization was performed by using X-ray Diffraction, Optical Microscope, X-ray Fluorescence, and Scanning Electron Microscope. This research showed that the optimum nickel grade and recovery were obtained using 2.68 % of sulfur content in coal reductant.
UR - http://www.scopus.com/inward/record.url?scp=85113973501&partnerID=8YFLogxK
U2 - 10.1063/5.0060958
DO - 10.1063/5.0060958
M3 - Conference contribution
AN - SCOPUS:85113973501
T3 - AIP Conference Proceedings
BT - Proceedings of the 4th International Seminar on Metallurgy and Materials, ISMM 2020
A2 - Khaerudini, Deni Shidqi
A2 - Darsono, Nono
A2 - Rhamdani, Ahmad Rizky
A2 - Utomo, Muhammad Satrio
A2 - Thaha, Yudi Nugraha
A2 - Kartika, Ika
A2 - Nugraha, Ahmad Ridwan Tresna
PB - American Institute of Physics Inc.
T2 - 4th International Seminar on Metallurgy and Materials: Accelerating Research and Innovation on Metallurgy and Materials for Inclusive and Sustainable Industry, ISMM 2020
Y2 - 19 November 2020 through 20 November 2020
ER -