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2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 2: Gudenau Intl. Symp. / Iron and Steel Making

Editors:Kongoli F, Kleinschmidt G, Pook H, Ohno K, Wu K
Publisher:Flogen Star OUTREACH
Publication Year:2015
Pages:340 pages
ISBN:978-1-987820-25-6
ISSN:2291-1227 (Metals and Materials Processing in a Clean Environment Series)

    Current Challenges of Japanese Ironmaking Technology

    Ko-ichiro Ohno1;
    1KYUSHU UNIVERSITY, Fukuoka, Japan;
    Type of Paper: Plenary
    Id Paper: 122
    Topic: 2

    Abstract:

    Not only in Japan but also all over the world, our research region should tackle CO2 emission from iron making process and quality degradation of raw materials. The Iron and Steel Institute of Japan constantly organizes the countermeasure task force, including both sides of academic and industry, for these problems. For blast furnace operation in low carbon situation from strong pressure of economic and environmental sides, a research society has been established and dedicated. The research society focused on gas and liquid permeability in blast furnace with low reducing agent operation. One of their works clarified the importance about high temperature physical molten properties of slag and iron. Especially, the work reported that wettability between coke and them has a dominant effect. Another research society has begun in order to evaluate a possibility of divalent iron oxide utilization in iron ore sintering process. In Japanese sintering process operation, most of raw material are hematite ore as trivalent iron oxide. The new research society will focus not only on magnetite ore but also on mill scale. Our research group is trying to understand their melting behavior in the sintering process using in-situ observation system. The challenge of biomass utilization for iron making process is one of the biggest keywords for a family-like connection, Gudenau Mafia, between IEHK of RWTH University and our research group. We are well collaborating to research about woody biomass possibility of carbon source for carburization reaction during iron melting behavior. Through this collaboration work, it was found that the woody biomass has advantages of carbon structure and ash content over ordinary metallurgical coke.

    Keywords:

    CO2; Carbon; Charcoal; Coke; Composite; Furnace; Iron; Melting; Metallurgy; Slag; Sustainability; Technology; Viscosity; Waste;

    References:

    [1] T. Ariyama, M. Sato: Optimization of Ironmaking Process for Reducing CO2 Emissions in the Integrated Steel Works, ISIJ Int., 46 (2006), 1736-1744.
    [2] T. Murakami, E. kasai: Utilization of Ores with High Combined Water Content for Ore–carbon Composite and Iron Coke, ISIJ Int., 51 (2011), 1220-1226.
    [3] Y. Kashiwaya, T. Nakamitsu, H. Kinoshita, S. Miura: Binding Energy of Carbon Implanted into Hematite and in situ Observation of Reaction Behavior during Heating Up Experiment, ISIJ Int., 51 (2011), 1204-1212.
    [4] Y. Kashiwaya, Y. Yamaguchi, H. Kinoshita, K. Ishii: In Situ Observation of Reduction Behavior of Hematite with Solid Carbon and Crystallographic Orientation between Hematite and Magnetite, ISIJ Int., 47 (2007), 226-233.
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    [6] H. Mizoguchi, H. Suzuki, S. Hayashi: Influence of Mixing Coal Composite Iron Ore Hot Briquettes on Blast Furnace Simulated Reaction Behavior in a Packed Mixed Bed, ISIJ Int., 51 (2011), 1247-1254.
    [7] K. Sato, T. Noguchi, T. Miki, Y. Sasaki, M. Hino: Effect of Fe3C on Carburization and Smelting Behavior of Reduced Iron in Blast Furnace, ISIJ Int., 51 (2011), 1269-1273.
    [8] H. Ono, K. Tanizawa, T. Usui: Rate of Iron Carburization by Carbon in Slags through Carbon/Slag and Slag/Metal Reactions at 1723 K, ISIJ Int., 51 (2011), 1274-1278.
    [9] K. Ohno, M. Kaimoto, T. Maeda, K. Nishioka, M. Shimizu: Effect of Slag Melting Behavior on Metal-Slag Separation Temperature in Powdery Iron, Slag and Carbon Mixture, ISIJ Int., 51 (2011), 1279-1284.
    [10] S. Sukenaga, S. Haruki, Y. Nomoto, N. Saito, K. Nakashima: Density and Surface Tension of CaO–SiO2–Al2O3–R2O (R=Li, Na, K) Melts, ISIJ Int., 51 (2011), 1285-1289.
    [11] S. Ishihara, R. Soda, Q. Zhang, J. Kano: DEM Simulation of Collapse Phenomena of Packed Bed of Raw Materials for Iron Ore Sinter during Charging, ISIJ Int., 53 (2013), 1555-1560.
    [12] K. Ohno, K. Noda, K. Nishioka, T. Maeda, M. Shimizu: Effect of Coke Combustion Rate Equation on Numerical Simulation of Temperature Distribution in Iron Ore Sintering Process, ISIJ Int., 53 (2013), 1642-1647.
    [13] K. Ohno, K. Noda, K. Nishioka, T. Maeda, M. Shimizu: Combustion Rate of Coke in Quasi-particle at Iron Ore Sintering Process, ISIJ Int., 53 (2013), 1588-1593.
    [14] Shinichi Yuu, Toshihiko Umekage: Simulation of Sintering Process – Effects of Contraction Force by Particle Shrinkage and Melted Particle Volume on Growth of Void and Crack – , ISIJ Int., 53 (2013), 1648-1657.
    [15] K. Ohno, A. Babich, J. Mitsue, T. Maeda, D. Senk, H. W. Gudenau, M. Shimizu: Effects of Charcoal Carbon Crystallinity and Ash Content on Carbon Dissolution in Molten Iron and Carburization Reaction in Iron-Charcoal Composite, ISIJ Int., 52 (2012), 1482-1488.
    [16] K. Ohno, S. Tsurumaru, A. Babich, T. Maeda, D. Senk, H. W. Gudenau, K. Kunitomo: Effects of Ash Amount and Molten Ash’s Behavior on Initial Fe–C Liquid Formation Temperature due to Iron Carburization Reaction, ISIJ Int., 55 (2015), 1245-1451.

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    Cite this article as:

    Ohno K. Current Challenges of Japanese Ironmaking Technology. In: Kongoli F, Kleinschmidt G, Pook H, Ohno K, Wu K, editors. Sustainable Industrial Processing Summit SIPS 2015 Volume 2: Gudenau Intl. Symp. / Iron and Steel Making. Volume 2. Montreal(Canada): FLOGEN Star Outreach. 2015. p. 129-148.