The 190th ISIJ Autumn Meeting
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Session Details

Discussion SessionsHigh Temperature Processes

Development of hydrogen reduction technology to realize carbon neutrality in Japanese steel industry

Thu. Sep 18, 2025 9:20 AM - 5:00 PM JST
Thu. Sep 18, 2025 12:20 AM - 8:00 AM UTC
Room1（Institute for the Advancement of Higher Education, 2F E201）
岸本康夫 [JFE]、宇治澤優 [日本製鉄]、石渡夏生 [JFE]、伊藤義起 [JRCM]
9:25 AM - 9:45 AM JST(12:25 AM - 12:45 AM UTC)

[D6]Working toward a carbon-neutral steelmaking and green innovation fund projects

○Toru Kato (NEDO)
9:45 AM - 10:05 AM JST(12:45 AM - 1:05 AM UTC)

[D7]Overview of the green innovation fund project: "hydrogen utilization in the steelmaking process"

○Natsuo Ishiwata1, Yasuo Kishimoto1, Masaru Ujisawa2, Seiji Nomura2 (1.JFE, 2.Nippon Steel)
10:05 AM - 10:30 AM JST(1:05 AM - 1:30 AM UTC)

[D8]Optimal grinding method of iron ore to promote the liberation of iron minerals

○Yutaro Takaya1, Yuto Yamamoto1, Kento Izumi2, Gakuho Numao2, Kazumi Yoshiya2, Chiharu Tokoro2 (1.The Univ. of Tokyo, 2.Waseda Univ.)
10:30 AM - 10:55 AM JST(1:30 AM - 1:55 AM UTC)

[D9]Effect of pellet characteristics on the low-temperature reduction disintegration mechanism under hydrogen reduction shaft furnace

○Koki Momma, Taichi Murakami (Tohoku Univ.)
11:05 AM - 11:30 AM JST(2:05 AM - 2:30 AM UTC)

[D10]Evaluation of pellets strength for clarification of powdering and clustering phenomena during hydrogen reduction

○Shingo Ishihara (Tohoku Univ.)
11:30 AM - 11:55 AM JST(2:30 AM - 2:55 AM UTC)

[D11]Reducibility and pore structure of iron ore pellets

○Hirokazu Konishi1, Shuna Kushibe2, Moritoshi Mizutani3 (1.NIT, Suzuka College, 2.The Univ. of Osaka, 3.Nippon Steel)
11:55 AM - 12:20 PM JST(2:55 AM - 3:20 AM UTC)

[D12]Evaluation of gaseous reduction rate of low-grade iron ore pellets for direct hydrogen reduction

○Kengo Kato1, Hideki Ono1, Shinnosuke Yaguchi1, Kota Moriya2, Sumito Ozawa2, Taihei Nouchi2 (1.Univ. of Toyama, 2.JFE)
2:00 PM - 2:25 PM JST(5:00 AM - 5:25 AM UTC)

[D13]Clustering behavior of hematite pellets under hydrogen-based reduction conditions

○Ko-ichiro OHNO1, Mohammad Chand Ali1, Tatsuya Kon1, Yoshiko Nakahara2, Kota Moriya2, Sumito Ozawa2 (1.Kyushu Univ., 2.JFE)
2:25 PM - 2:50 PM JST(5:25 AM - 5:50 AM UTC)

[D14]Characterization of microstructures for improving the quality of hydrogen-reduced iron

○Shigeru Ueda, Yuri Ito, Takayuki Iwama, Elizaveta Cheremisina, Ryo Inoue (Tohoku Univ.)
2:50 PM - 3:15 PM JST(5:50 AM - 6:15 AM UTC)

[D15]Post-treatment evaluation using solid oxide electrolysis cells with simulated exhaust gas from direct reduction furnace

○Yoshino Ikeda1, Rikuya Miyazaki1, Yukitaka Kato1, Hiroki Takasu1, Yoshiko Nakahara2, Yuichiro Hirano2 (1.Science Tokyo, 2.JFE)
3:25 PM - 3:50 PM JST(6:25 AM - 6:50 AM UTC)

[D16]Multi-dimensional and multi-scale analysis on reaction and heat transfer in hydrogen reduction of iron oxide

○Hiroshi Nogami, Shungo Natsui, Ryo Takahashi, Jeong-In Kim (Tohoku Univ.)
3:50 PM - 4:15 PM JST(6:50 AM - 7:15 AM UTC)

[D17]Evaluation of hydrogen-iron-reduction behavior on shaft furnace

○Takahiro Nomura1, Cholila Tamzysi1, Moritoshi Mizutani2, Tsunehisa Nishimura2 (1.Hokkaido Univ., 2.Nippon Steel)
4:15 PM - 4:40 PM JST(7:15 AM - 7:40 AM UTC)

[D18]Direct reduction simulation considering heat and mass transfer at particle scale in shaft furnace

○Shungo Natsui1, Hiroshi Nogami1, Koki Terui2, Taihei Nouchi2 (1.Tohoku Univ., 2.JFE)
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