TY - GEN
T1 - The effect of temperature and leaching time of sulfuric acid on increasing nickel and iron content from ferronickel slag waste after alkaline fusion using sodium carbonate
AU - Santoso, Prinanda Doni
AU - R., Arryan Jibril
AU - Prasetyo, Agus Budi
AU - Maksum, Ahmad
AU - Ulum, Reza Miftahul
AU - Soedarsono, Johny Wahyuadi
N1 - Funding Information:
The authors also 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.
Publisher Copyright:
© 2020 Author(s).
PY - 2020/9/3
Y1 - 2020/9/3
N2 - Ferronickel slag is a by-product of nickel ore smelting that is categorized as hazardous and toxic waste to the environment that still contains valuable minerals such as nickel, iron, cobalt, and some rare earth elements. Further research is needed to become the solution of the environmental issues that this slag had caused and to find an alternative solution to the decrease in the world's minerals supply by re-using ferronickel slag. In this research, the ferronickel slag is first given alkaline fusion to create microcracks and to bind silica on the slag by mixing it with sodium carbonate and roast them at 1000°C and hold it for 60 min. Then followed by hot water leaching to separate silica from the slag at 100°C for 60 min. Next, the slag is leached by using 1,5 M sulfuric acid with the various temperature at room temperature, 50oC, 60°C, and 70°C with the various time that is 15, 30, 60, 90, and 120 minutes to get the most effective condition to dissolve the nickel and iron. The most effective condition to dissolve nickel and iron is expected at 70°C leaching temperature and 120 minutes of leaching. The result of this experiment is characterized by ICP (Inductively Coupled Plasma) to know how much nickel and iron had dissolved to the solution. The result of this research is 70°C leaching temperature and 120 minutes of leaching is the best condition to make the highest % of nickel and iron extraction.
AB - Ferronickel slag is a by-product of nickel ore smelting that is categorized as hazardous and toxic waste to the environment that still contains valuable minerals such as nickel, iron, cobalt, and some rare earth elements. Further research is needed to become the solution of the environmental issues that this slag had caused and to find an alternative solution to the decrease in the world's minerals supply by re-using ferronickel slag. In this research, the ferronickel slag is first given alkaline fusion to create microcracks and to bind silica on the slag by mixing it with sodium carbonate and roast them at 1000°C and hold it for 60 min. Then followed by hot water leaching to separate silica from the slag at 100°C for 60 min. Next, the slag is leached by using 1,5 M sulfuric acid with the various temperature at room temperature, 50oC, 60°C, and 70°C with the various time that is 15, 30, 60, 90, and 120 minutes to get the most effective condition to dissolve the nickel and iron. The most effective condition to dissolve nickel and iron is expected at 70°C leaching temperature and 120 minutes of leaching. The result of this experiment is characterized by ICP (Inductively Coupled Plasma) to know how much nickel and iron had dissolved to the solution. The result of this research is 70°C leaching temperature and 120 minutes of leaching is the best condition to make the highest % of nickel and iron extraction.
KW - alkaline fusion
KW - ferronickel slag
KW - leaching
KW - sodium carbonate
KW - sulfate acid
UR - http://www.scopus.com/inward/record.url?scp=85092016696&partnerID=8YFLogxK
U2 - 10.1063/5.0014055
DO - 10.1063/5.0014055
M3 - Conference contribution
AN - SCOPUS:85092016696
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 -