Characterization and Reduction Behavior of Carbonized Ore Prepared by Iron Ore Immersion in Tar Derived from Biomass Pyrolysis

Abstract:

The provision of carbon reducing agents for the direct reduction process of iron ore is carried out by immersing the iron ore in a tar solution and then proceeding with the pyrolysis/ carbonization process to obtain carbon deposits on the surface of the iron ore. The purpose of this study is to investigate the characterization and reduction behavior of Fe compounds resulting from impregnation and carbonization processes. In this study, iron ore is immersed in the pine flower tar with immersion time varying from 0 - 12 hours and a fixed ratio of tar / ore 1: 1. The soaking mixture is then carbonized in a vertical tube reactor covered by furnace with N₂ gas flowed during the carbonization/pyrolysis process. The carbonization runs with a temperature variation of 450-550°C, for 1 hour, and a heating rate of 10°C/min. From SEM-EDX-Mapping result shows that the immersion method in tar followed by carbonization caused the carbon content in iron ore to increase by 86.68% in a 1: 1 tar/ore ratio, the impregnating time of 6 hours, and a pyrolysis temperature of 450°C. Effect of impregnation duration evidence that immersion times of 6 and 12 hours are sufficient to produce the magnetite phase after the carbonization process. Furthermore, the 6 hours’ duration provides a more optimal peak intensity. Meanwhile, the effect of temperature on the carbonization process shows that 450°C is the optimal temperature to obtain the magnetite phase in the carbonized ore.

• Periodical: Materials Science Forum (Volume 1029)
• Pages: 181-187
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1029.181
• Online since: May 2021
• Authors: Ariany Zulkania*, Brian Adi Febrananda, Rahemas Sri Laude, Artha Dewi Mella Melati, Achmad Chafidz
• Keywords: Carbon Deposit, Carbonized Ore, Iron Ore, Reduction, Tar

References

[1] Sufriadin, S. Widodo, and R. Biatong, Research Results of the Faculty of Engineering: Characteristics of Laterite Iron Ore Mineralogy and Its Potential as Raw Materials for Steel in Indonesia, The 2013 Proceedings: Research Results of the Faculty of Engineering, 7 (2013) Makasar: Hasanuddin Univ. Eng. Group Press.

[2] H. Suopajärvi, E. Pongrácz, & T. Fabritius, 2013. The potential of using biomass-based reducing agents in the blast furnace: A review of thermochemical conversion technologies and assessments related to sustainability. Renew. and Sust. En. Rev. 25 (2013) 511–528.

DOI: 10.1016/j.rser.2013.05.005

[3] H. Suopajärvi, A. Kemppainen, J. Haapakangas, & T, Fabritius, Extensive review of the opportunities to use biomass-based fuels in iron and steelmaking processes. J. Cleaner Prod., 148 (2017) 709–734.

DOI: 10.1016/j.jclepro.2017.02.029

[4] Y. Hata, H. Purwanto, S. Hosokai, J. Hayashi, Y. Kashiwaya, T. Akiyama, Biotar Ironmaking Using Wooden Biomass and Nanoporous Iron Ore. En. & Fuel. 23 (2009) 1128-1131.

DOI: 10.1021/ef800967h

[5] S. Hosokai, K. Matsui, N. Okinaka, K. Ohno, M. Shimizu, T. Akiyama, Kinetic Studyn on the Reduction Reaction of Biomass-Tar-Infiltrated Iron, En. & Fuel. 26 (2012) 7274-7279.

DOI: 10.1021/ef3013272

[6] A.N. Rozhan, R.B. Cahyono, N. Yasuda, T. Nomura, S. Hosokai, H. Purwanto, T. Akiyama, Carbon Deposition from Biotar by Fast Pyrolysis Using the Chemical Vapor Infiltration Process within Porous Low-Grade Iron Ore for Iron-Making, En. & Fuel. 26 (2012) 7340-7346.

DOI: 10.1021/ef301409f

[7] R.B. Cahyono, A.N. Rozhan, N. Yasuda, T. Nomura, S. Hosokai, Y. Kashiwaya, T. Akiyama, Catalytic coal-tar decomposition to enhance reactivity of low-grade iron ore. Fuel Proc. Tech., 113 (2013) 84–89.

DOI: 10.1016/j.fuproc.2013.03.012

[8] K., Abe, A., Kurniawan, A., Ohashi, K., Nomura, T., Akiyama, T. 2018. Ultrafast Iron-Making Method: Carbon Combustion Synthesis from Carbon-Infiltrated Goethite Ore, ACS Omega, 3, 6151−6157.

DOI: 10.1021/acsomega.8b00958

[9] Mochizuki, Y., Nishio, M., Tsubouchi, N., Akiyama, T. 2016. Preparation of Carbon-containing Iron Ore with Enhanced Crushing Strength from Limonite by Impregnation and Vapor Deposition of Tar Recovered from Coke Oven Gas, En.&Fuel. 30 (2016) 6233−6239.

DOI: 10.1021/acs.energyfuels.6b00651

[10] A. Zulkania, A. Chafidz, P. Maharani, S.A. Putri, Effect of Acidic Activated Natural Zeolite on Characteristics of Bio Oil Derived from Pinus Merkusii's Cone Pyrolysis, Key Eng. Mat'l. 818 (2019) 99-103.

DOI: 10.4028/www.scientific.net/kem.818.99

[11] K. Abe, A. Kurniawan, K. Ohashi, T. Nomura, T. Akiyama, Ultrafast Iron-Making Method: Carbon Combustion Synthesis from Carbon-Infiltrated Goethite Ore, ACS Omega, 3 (2018) 6151−6157.

DOI: 10.1021/acsomega.8b00958

[12] Y. Kashiwaya, T. Akiyama, Nanocrack Formation in Hematite through the Dehydration of Goethite and the Carbon Infiltration from Biotar, J. Nanomat'l. (2010) 235609.

DOI: 10.1155/2010/235609

[13] H. Zhao, Y. Lib, Q. Song, S. Liu, Q. Mad, L. Mae, X. Shu, Catalytic reforming of volatiles from co-pyrolysis of lignite blended with corn straw over three different structures of iron ores. J. Analyt. and Appl. Pyrol. 144 (2019) 104714.

DOI: 10.1016/j.jaap.2019.104714

[14] F. Guo, S. Liang, X. Jia, K. Peng, X. Jiang, L. Qian, One-step synthesis of biochar-supported potassium-iron catalyst for catalytic cracking of biomass pyrolysis tar, Int. J. Hyd. En. 45 (2020) 16398-16408.

DOI: 10.1016/j.ijhydene.2020.04.084

[15] R.B. Cahyono, N. Yasuda, T. Nomura, T. Akiyama, Utilization of Low Grade Iron Ore (FeOOH) and Biomass Through Integrated Pyrolysis-tar Decomposition (CVI process) in Ironmaking Industry: Exergy Analysis and its Application, ISIJ Intl'., 55, 2 (2015) 428-435.

DOI: 10.2355/isijinternational.55.428