TY - GEN
T1 - Study of graphite stoichiometry effect on the selective reduction of saprolite to percentage, recovery, and microstructure of nickel
AU - Bahfie, Fathan
AU - Manaf, Azwar
AU - Astuti, Widi
AU - Nurjaman, Fajar
AU - Triapriani, Yepi
AU - Supriyatna, Yayat Iman
N1 - Funding Information:
We would like to say thank to the Department of Physic-University of Indonesia for financial and technical support of this research in Publikasi Terindeks Internasional (PUTI) Q3 University of Indonesia with grant number: NKB-1992/UN2.RST/HKP.05.00/2020 and LIPI’science centre for support the analysis.
Publisher Copyright:
© 2023 Author(s).
PY - 2023/5/9
Y1 - 2023/5/9
N2 - The selective reduction process and magnetic separation are the combination processes for separating nickel and iron. This process uses the addition of Na2SO4 and graphite. Those are the optimal of separation process to limit iron oxide because the reductanthas no volatiles. The stoichiometry of graphite plays an essential role because the carbon and energy needed are for the reduction. This experiment studied the effect of stoichiometry on the nickel grade, recovery, and grain size in the variation of graphite stoichiometry of 0.125, 1,and 1.5 with a reduction temperature of 1150 °C for 60 minutes and 10 % Na2SO4. XRD and XRF examined the mineralogical composition of the raw and reduced samples. The microstructure was analyzed by an optical microscope. The optimum result is in the 0.125 stoichiometry with nickel grade and recovery of 4.94 wt% and 86.18% and the grain size is large due to the amount of carbon is high.
AB - The selective reduction process and magnetic separation are the combination processes for separating nickel and iron. This process uses the addition of Na2SO4 and graphite. Those are the optimal of separation process to limit iron oxide because the reductanthas no volatiles. The stoichiometry of graphite plays an essential role because the carbon and energy needed are for the reduction. This experiment studied the effect of stoichiometry on the nickel grade, recovery, and grain size in the variation of graphite stoichiometry of 0.125, 1,and 1.5 with a reduction temperature of 1150 °C for 60 minutes and 10 % Na2SO4. XRD and XRF examined the mineralogical composition of the raw and reduced samples. The microstructure was analyzed by an optical microscope. The optimum result is in the 0.125 stoichiometry with nickel grade and recovery of 4.94 wt% and 86.18% and the grain size is large due to the amount of carbon is high.
UR - http://www.scopus.com/inward/record.url?scp=85160064119&partnerID=8YFLogxK
U2 - 10.1063/5.0114907
DO - 10.1063/5.0114907
M3 - Conference contribution
AN - SCOPUS:85160064119
T3 - AIP Conference Proceedings
BT - Advances in Metallurgy and Engineering Materials
A2 - Fatriansyah, Jaka Fajar
A2 - Ferdian, Deni
A2 - Putra, Wahyuaji Narottama
A2 - Yuwono, Akhmad Herman
A2 - Dhaneswara, Donanta
A2 - Sofyan, Nofrijon
PB - American Institute of Physics Inc.
T2 - International Meeting on Advances in Metallurgy and Materials 2020, i-MAMM 2020
Y2 - 16 November 2020 through 17 November 2020
ER -