Research and Development on Utilization of Steelmaking Slag and Recovery of Valuable Slag Elements

Takayuki Iwama, Ryo Inoue, Shigeru Ueda

ISIJ International　2025/07/15

DOI： 10.2355/isijinternational.ISIJINT-2025-064 　

Electrochemical Characterization of Cu-Induced Interfacial Behavior between a Molten Fe–Cu Alloy and Molten Oxide

Satoshi Honna, Shungo Natsui, Akihisa Ito, Kouji Yasuda, Sohei Sukenaga, Takayuki Iwama, Shigeru Ueda, Hiroshi Nogami

ACS Omega　2025/07/15

DOI： 10.1021/acsomega.5c04287 　

Experimental investigation of nonisothermal interaction between Fe-Zr melt and stainless steel forming "metallic debris" in Fukushima Daiichi Nuclear Power Station

Ayumi Itoh, Tatsuya Kanno, Takayuki Iwama, Shigeru Ueda, Takumi Sato, Yuji Nagae

ANNALS OF NUCLEAR ENERGY　217　2025/07

DOI： 10.1016/j.anucene.2025.111333 　

ISSN： 0306-4549

eISSN： 1873-2100

Effect of Flux Addition on the Reduction of EAF Slag Containing Cr₂O₃ and MnO

Ryo Kitagawa, Hiroshi Fukaya, Takayuki Iwama, Elizaveta Cheremisina, Shigeru Suzuki, Ryo Inoue, Shigeru Ueda

ISIJ International　2025/06/15

DOI： 10.2355/isijinternational.ISIJINT-2024-393 　

Reactions between Different Iron Ores under Condition of Blast Furnace Operation with Hydrogen-enriched Reducing Gas Blowing

Takumi Hoshika, Takayuki Iwama, Elizaveta Cheremisina, Ryo Inoue, Shigeru Ueda

ISIJ International　2025/05/30

DOI： 10.2355/isijinternational.ISIJINT-2024-363 　

Structure of Metallic Iron Formed in Iron Ores by CO–H₂ Reduction

Takumi Hoshika, Takayuki Iwama, Takashi Watanabe, Hirokazu Konishi, Ryo Inoue, Shigeru Ueda

ISIJ International　2025/05/30

DOI： 10.2355/isijinternational.ISIJINT-2024-261 　

Reaction behavior of molten 316L stainless steel with B4C at 1450℃ during a core melt accident of BWR

Tatsuya Kanno, Takayuki Iwama, Takumi Sato, Ayumi Itoh, Yuji Nagae, Ryo Inoue, Shigeru Ueda

Journal of Nuclear Materials　2025/03

DOI： 10.1016/j.jnucmat.2025.155705 　

Production of LiFePO₄ by Using Steelmaking Slag as a Phosphorus Source

Junyi Deng, Takayuki Iwama, Huafang Yu, Yasushi Sasaki, Shigeru Ueda

ISIJ International　2025/02/15

DOI： 10.2355/isijinternational.ISIJINT-2024-207 　

Effect of MgO Concentration on Phase Evolution During Steelmaking Slag Cooling Process

Wen Feng Gu, Jiang Diao, Hao Qin, Hua Fang Yu, Takayuki Iwama, Cheremisina Elizaveta, Hong Yi Li, Bing Xie, Shigeru Ueda

Journal of Sustainable Metallurgy　2025

DOI： 10.1007/s40831-025-01039-w 　

ISSN： 2199-3823

eISSN： 2199-3831

Process for Phosphorus Recovery from Phosphorus-concentrated Steelmaking Slag and Decreasing Slag Volume

Takayuki Iwama, Ryo Inoue, Kenji Nakase, Katsunori Yamaguchi, Shigeru Ueda

Tetsu-to-Hagane　2025

DOI： 10.2355/tetsutohagane.TETSU-2024-135 　

落球法による気液混相流体の見掛け粘度測定

Yusaku Mita, Takayuki Iwama, Huafang Yu, Shin-ichi Shimasaki, Noritaka Saito, Ryo Inoue, Shigeru Ueda

Tetsu-to-Hagane　110　(6)　483-493　2024/04/15

DOI： 10.2355/tetsutohagane.tetsu-2023-033 　

ISSN： 0021-1575

eISSN： 1883-2954

Chemical and Mechanical Factors on Phosphorus Dissolution Behavior from P-concentrated Slag

Takayuki Iwama, Ryo Inoue, Kenji Nakase, Shigeru Ueda

ISIJ International　64　(14)　1956-1966　2024

DOI： 10.2355/isijinternational.ISIJINT-2024-234 　

ISSN： 0915-1559

SeparationofPhosphorusfromPhosphorus-concentrated Steelmaking Slag

Takayuki Iwama, Ryo Inoue, Kenji Nakase, Shigeru Ueda

ISIJ International　2024

DOI： 10.2355/isijinternational.isijint-2023-495 　

ISSN： 0915-1559

Apparent Viscosity Measurement of Gas–liquid Multiphase Fluids by the Falling Ball Method

Yusaku Mita, Takayuki Iwama, Huafang Yu, Shin-ichi Shimasaki, Noritaka Saito, Ryo Inoue, Shigeru Ueda

ISIJ International　2024

DOI： 10.2355/isijinternational.isijint-2024-246 　

ISSN： 0915-1559

eISSN： 1347-5460

Measurement of SnO Activity Coefficient in CaO–SiO2–FetO–Al2O3 Slag Saturated with Fe

Yasunari Shinoda, Takayuki Iwama, Mizuki Kato, Hiromitsu Watanabe, Satoshi Nakagawara, Hiroki Takasu, Yukitaka Kato, Ryo Inoue, Shigeru Ueda

Journal of Sustainable Metallurgy　2023/12

DOI： 10.1007/s40831-023-00736-8 　

Falling Angle of Fe-C-Based Alloy Droplet on Coke and Graphite

Takayuki Iwama, Huafang Yu, Naoto Yasuda, Ryo Inoue, Shigeru Ueda

Steel Research International　94　(10)　2023/10

DOI： 10.1002/srin.202300142 　

ISSN： 1611-3683

eISSN： 1869-344X

Effect of Cooling Condition and Oxidation of P-concentrated Slag on Phosphorus Dissolution Behavior

Takayuki Iwama, Ryo Inoue, Kenji Nakase, Shigeru Ueda

ISIJ International　2023/05/15

DOI： 10.2355/isijinternational.ISIJINT-2022-450 　

Molten Oxide Electrolysis Using Copper-Containing Carbon-Saturated Molten Iron Anode

Shungo Natsui, Takahiro Sato, Akihisa Ito, Miho Hayasaka, Takayuki Iwama, Kota Mori, Shigeru Ueda, Hiroshi Nogami

Journal of the Electrochemical Society　170　(2)　2023/02

DOI： 10.1149/1945-7111/acb84f 　

ISSN： 0013-4651

eISSN： 1945-7111

Chemical and Mechanical Factors on Phosphorus Dissolution Behavior from P-concentrated Slag

Takayuki Iwama, Ryo Inoue, Kenji Nakase, Shigeru Ueda

Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan　109　(8)　661-672　2023

DOI： 10.2355/tetsutohagane.TETSU-2023-009 　

ISSN： 0021-1575

Separation of Phosphorus from Phosphorus-concentrated Steelmaking Slag

Takayuki Iwama, Ryo Inoue, Kenji Nakase, Shigeru Ueda

Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan　109　(1)　1-12　2023/01

DOI： 10.2355/tetsutohagane.TETSU-2022-061 　

ISSN： 0021-1575

Apparent Viscosity Measurement of Solid-liquid Coexisting Fluid by Falling Ball Method for Evaluation Iron Particle Sedimentation Velocity in Slag

Wei Li, Takayuki Iwama, Huafang Yu, Shigeru Ueda, Noritaka Saito, Ryo Inoue

ISIJ International　61　(12)　2915-2922　2021

DOI： 10.2355/isijinternational.ISIJINT-2021-250 　

ISSN： 0915-1559

Extraction of phosphorus and recovery of phosphate from steelmaking slag by selective leaching

Takayuki Iwama, Chuan Ming Du, Shohei Koizumi, Xu Gao, Shigeru Ueda, Shin Ya Kitamura

ISIJ International　60　(2)　400-407　2020

DOI： 10.2355/isijinternational.ISIJINT-2019-298 　

ISSN： 0915-1559

Extraction of Phosphorus and Recovery of Phosphate from Steelmaking Slag by Selective Leaching (vol 105, pg 479, 2019) Peer-reviewed

Iwama Takayuki, Du Chuan-ming, Koizumi Shohei, Gao Xu, Ueda Shigeru, Kitamura Shin-ya

TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN　105　(9)　939　2019/09

ISSN： 0021-1575

Extraction of phosphorus and recovery of phosphate from steelmaking slag by selective leaching

Takayuki Iwama, Chuan Ming Du, Shohei Koizumi, Xu Gao, Shigeru Ueda, Shin Ya Kitamura

Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan　105　(4)　69-77　2019/04

DOI： 10.2355/tetsutohagane.TETSU-2018-128 　

ISSN： 0021-1575

Erratum: Extraction of phosphorus and recovery of phosphate from steelmaking slag by selective leaching (Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan (2019) 105:4 (479-487) DOI: 10.2355/tetsutohagane.TETSU-2018-128)

Takayuki Iwama, Chuan Ming Du, Shohei Koizumi, Xu Gao, Shigeru Ueda, Shin Ya Kitamura

Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan　105　(9)　939　2019

DOI： 10.2355/tetsutohagane.105.939 　

ISSN： 0021-1575

Extraction of phosphorus from steelmaking slag by selective leaching using citric acid

Takayuki Iwama, Chuan ming Du, Xu Gao, Sun joong Kim, Shigeru Ueda, Shin ya Kitamura

ISIJ International　58　(7)　1351-1360　2018/07/15

DOI： 10.2355/isijinternational.ISIJINT-2017-658 　

ISSN： 0915-1559

New Collision Force Suppression Mechanism and Base Control of Human-Friendly Robot

Naoto Tanaka, Takayuki Iwama, Shunsuke Kumagai, Atsuo Takanishi, Hun-ok Lim

2018 18TH INTERNATIONAL CONFERENCE ON CONTROL, AUTOMATION AND SYSTEMS (ICCAS)　29-33　2018

ISSN： 2093-7121