TY - GEN
T1 - Study of the effect of Na2CO3Mass ratio as an additive in the reduction process of limonite ore to reduce impurities for increasing nickel
AU - Syafa, Bagas Muhammad
AU - Luneto, Naufal Wirasyawal
AU - Maksum, Ahmad
AU - Prasetyo, Agus Budi
AU - Ulum, Reza Miftahul
AU - Soedarsono, Johny Wahyuadi
N1 - Funding Information:
The authors wish to thank the Ministry of Research Technology and Higher Education and Directorate of Research and Community Engagement, Universitas Indonesia, under PIT9 Research Grants with Contract No. NKB–0062/UN2.R3.1/HKP.05.00/2019 for the financial support of this research. The authors also wish to give
Publisher Copyright:
© 2020 Author(s).
PY - 2020/9/3
Y1 - 2020/9/3
N2 - Limonite is one of the nickel lateritic ores that has an abundant amount in Indonesia. Not only nickel, limonite ore also contains many dominating compounds, such as hematite (Fe2O3), silica (SiO2), and alumina (Al2O3). Those compounds can complicate the process to increase nickel content in the limonite ore. One of the options to reduce other compounds that act as impurities in increasing nickel is using additive in pyrometallurgical/roasting process of limonite ore. Additive used in this study is Na2CO3, with the Na2CO3: limonite ore ratio varied as 0:4; 2:4; 3:4; and 4:4. The temperature of the process was approximately 825°C, determined with STA (Simultaneous Thermal Analysis) method, while characterization of the samples after process was done with XRF method. The study showed that more Na2CO3 added resulted in less content of Fe2O3, SiO2, and Al2O3 in the ore after roasting, supported with XRF data of the samples. This was possible because they reacted and binded to Na2CO3 and formed new phase, such as Na2SiO3 and Na2MgSiO4. However, Na2O shows different result from the other compound, it was increasing with the more addition of Na2CO3. It was because additive Na2CO3 increase sodium content in the ore and the reactions between Na2CO3 and other compounds in the ore created more Na2O.
AB - Limonite is one of the nickel lateritic ores that has an abundant amount in Indonesia. Not only nickel, limonite ore also contains many dominating compounds, such as hematite (Fe2O3), silica (SiO2), and alumina (Al2O3). Those compounds can complicate the process to increase nickel content in the limonite ore. One of the options to reduce other compounds that act as impurities in increasing nickel is using additive in pyrometallurgical/roasting process of limonite ore. Additive used in this study is Na2CO3, with the Na2CO3: limonite ore ratio varied as 0:4; 2:4; 3:4; and 4:4. The temperature of the process was approximately 825°C, determined with STA (Simultaneous Thermal Analysis) method, while characterization of the samples after process was done with XRF method. The study showed that more Na2CO3 added resulted in less content of Fe2O3, SiO2, and Al2O3 in the ore after roasting, supported with XRF data of the samples. This was possible because they reacted and binded to Na2CO3 and formed new phase, such as Na2SiO3 and Na2MgSiO4. However, Na2O shows different result from the other compound, it was increasing with the more addition of Na2CO3. It was because additive Na2CO3 increase sodium content in the ore and the reactions between Na2CO3 and other compounds in the ore created more Na2O.
KW - limonite ore
KW - NaCOadditive
KW - Nickel
KW - pyrometallurgy
KW - roasting
KW - silica
UR - http://www.scopus.com/inward/record.url?scp=85092028377&partnerID=8YFLogxK
U2 - 10.1063/5.0014053
DO - 10.1063/5.0014053
M3 - Conference contribution
AN - SCOPUS:85092028377
T3 - AIP Conference Proceedings
BT - 4th International Tropical Renewable Energy Conference, i-TREC 2019
A2 - Kusrini, Eny
A2 - Nugraha, I. Gde Dharma
PB - American Institute of Physics Inc.
T2 - 4th International Tropical Renewable Energy Conference 2019, i-TREC 2019
Y2 - 14 August 2019 through 16 August 2019
ER -