Abstract:Under the global "carbon peak" "carbon neutralization" development situation, it is of great significance to research the low carbon development strategy, goals and approach of blast furnace-converter (BF-BOF) process and greatly reduce CO2 emission to achieve sustainable development of steel industry. Facing the future, iron and steel is still an important basic material, structural material and functional material, and the iron and steel industry is still an important basic industry for economic and social development. The development status and characteristics of Japanese steel industry are studied and analyzed, and the key technologies of blast furnace-converter process are introduced. For the research and development of carbon reducing technologies in Japanese steel industry, the mechanism and application effect of coke and ore mixed charging technology and high ratio pellet smelting technology of blast furnace in reducing the fuel ratio are discussed. The preparation technical process of reactive coke agglomerate and the pre-reductive sinter ore are discussed. The key technical difficulties of new raw materials and burden preparation are analyzed, and the mechanism of carbon reducing for new raw materials in blast furnace smelting process is discussed. The composition, technical characteristics and application effect of SCOPE 21 process are introduced, and the technical process, metallurgical mechanism and application effect of composite iron coke preparation are reviewed. The process composition, technical route and process characteristics for the new generation of blast furnace ironmaking process COURSE 50 are mainly discussed, and the core technical difficulties, key technology composition and engineering application prospect are expounded. The supporting role of constructing intelligent blast furnace cyber physics system for carbon reducing of blast furnace is analyzed, and the importance of coordinated development for intelligent and low carbonization is pointed out. Based on the development status and future of carbon reducing technology in Japan, the understanding and thinking of formulating feasible carbon reducing technology strategy, selecting economical and applicable technical routes and determining key technology research are proposed. It points out the philosophies and ways to realize the green, low carbon and high quality development in the China's iron and steel industry.
张福明, 刘清梅. 高炉-转炉钢铁制造流程低碳技术发展与认识[J]. 中国冶金, 2023, 33(1): 1-17.
ZHANG Fu-ming, LIU Qing-mei. Development and understanding on low carbon technology based on BF-BOF steel manufacturing processes[J]. China Metallurgy, 2023, 33(1): 1-17.
Kato Y, Ujisawa Y, Sakai H. Application of carbon recycling iron-making system in a shaft furnace[J]. ISIJ International, 2015, 55(2): 359.
[9]
Manabe T, Miyata M, Ohnuki K. Introduction of steelmaking process with resource recycling[J]. Journal of Sustainable Metallurgy, 2019, 5(3): 319.
[10]
Narita N,Sagisaka M,Inaba A. Life cycle inventory analysis of CO2 emissions: Manufacturing commodity plastics in Japan[J]. International Journal of Life Cycle Assessment, 2002, 7(5): 277.
[11]
Takagi S. Energy saving in ironmaking processes[J].Transactions of the Iron and Steel Institute of Japan, 1980, 20(5): 338.
[12]
Kuwatori H. The path to environmentally sound steel technology: Iron and steel as sustainable materials for industry[J]. Journal of the Iron and Steel Institution of Japan, 2014, 100(1): 59.
[13]
Kanji Takeda, Takashi Anyashiki, Takeshi Sato,等. 日本炼铁近期和中长期CO2减排项目进展[J]. 世界钢铁, 2012(6): 1.
[14]
Shiro Watakabe, Kanji Takeda, Hirobumi Nishimura. Development of high ratio coke mixed charging technique to the blast furnace[J]. ISIJ International, 2006, 46(4): 513.
[15]
Hitoshi Toyota, Tomonori Maeda, Nayuta Mitauoka, et al. Decreasing coke rate under all-pellet operation in Kobe No.3 blast furnace[J]. Kobelco Technology Review, 2020, 38(3): 46.
[16]
Kawaguchi T, Matsumura M. Development of sinter quality and the technology with corresponding to the change of iron ore resources: 100 years of sintering process and to the future[J].Journal of the Iron and Steel Institute of Japan, 2018, 100(2): 148.
[17]
Noda H, Sakamoto N, Ichikawa K. Operation conditions of iron ore sintering process combined with oxygen enrichment and exhaust gas recirculation system[J]. Journal of the Iron and Steel Institute of Japan, 2001, 87(5): 305.
[18]
Fukumoto M, Hayashi S, Maeda S. Effect of water vapor on the oxidation properties of sintered Fe-3 mass%SiO2 in air at 1 273 K[J]. Journal of the Japan Institute of Metals, 2001, 65(2): 115.
[19]
Natsui T, Nakano K. Evaluation of sinter reducibility and coke reactivity by experimental blast furnace[J]. Journal of the Iron and Steel Institute of Japan, 2013, 99(4): 267.
[20]
Shinotake A. Reduction potential evaluation index of various reducing agents in blast furnace[J]. Journal of the Iron and Steel Institute of Japan, 2017, 100(2): 319.
[21]
Higuchi K, Kunitomo K, Nomura S. Reaction behaviors of various agglomerates in reducing the temperature of the thermal reserve zone of the blast furnace[J]. ISIJ International, 2020, 60(11): 2266.
[22]
Maeda T, Hayashi Y. Effect of ultrafine powder of hematite and magnetite on granulation characteristics of iron oxide[J]. Journal of the Iron and Steel Institute of Japan, 2016, 103(6): 246.
[23]
Nomura S. Recent developments in coke making technologies in Japan[J]. Fuel Processing Technology, 2017, 159(1): 1.
[24]
Arima T, Kubota Y, Yamamoto M. Effect of coking conditions on coke pushing force at the SCOPE 21 pilot plant[J]. Journal of the Iron and Steel Institute of Japan, 2004, 90(9): 136.
[25]
Kenich H, Masaru M, Kazuya U. Innovative technologies to mitigating CO2 emissions during iron making[J]. Nippon Technology Report, 2021, 417(5): 15.
[26]
Kato K. Development of new cokemaking technology (SCOPE 21) [J]. Journal of the Iron and Steel Institute of Japan, 2010, 96(5):12.
[27]
Nishioka K, Ujisawa Y. Effect of large quantity of ferrocoke charging on reduction of reducing agent rate of blast furnace [J]. Journal of the Iron and Steel Institute of Japan, 2016, 100(11): 1347.
Nishioka K, Ujisawa Y, Sikstrom P. Sustainable aspects of CO2 ultimate reduction in the steelmaking process (COURSE50 Project),Part 1: Hydrogen reduction in the blast furnace[J]. Journal of the Iron and Steel Institute of Japan, 2016, 2(3): 200.
[32]
Tonomura S, Kikuchi N, Tomita Y. Concept and current state of CO2 ultimate reduction in the steelmaking process (COURSE50) aimed at sustainability in the Japanese steel industry[J]. Journal of Sustainable Metallurgy, 2016, 2(3): 191.
[33]
JFE Group CSR REPORT. Protecting the global environment. climate change mitigation[R/OL]. (2019-09-04)[2022-03-11]. https://www.jfe-holdings.co.jp/en/csr/pdf/2019/2019_09_04.pdf.
[34]
The Japan Iron and Steel Federation. Global warming countermeasures-activities of Japanese steel industry (activities of Japanese steel industry to combat global warming-JISF's commitment to carbon neutrality action plan)[EB/OL]. [2022-03-11]. http://www.jisf.or.jp/business/ondanka/kouken/keikaku/.
[35]
The Japan Iron and Steel Federation. Establishment of "basic policy of the Japan steel industry on 2050 carbon neutrality aimed by the Japanese government," link to "basic policy of the Japan steel industry on 2050 carbon neutrality aimed by the Japanese government"[EB/OL]. [2022-02-08]. https://www.jisf.or.Jp/en/activity/climate/documents/CN2050_eng_201210215.pdf.
[36]
Ministry of Economy, Trade and Industry (METI). Technology roadmap formulated for transition finance toward decarburization in the iron and steel sector, (Oct. 2021) [EB/OL]. [2022-02-24]. https://www.meti.go.Jp/english/press/2021/1027_002.html.
[37]
张福明. 智能化钢铁制造流程信息物理系统的设计研究[J]. 钢铁, 2021, 56(6): 1.
[38]
Tomohiko I, Toshiki T, Ryousuke M. Operation guidance technique of a blast furnace using data science [J].JFE Technology Report, 2022, 49(2): 36.
[39]
Kimihito S. Overview and research examples of CCU, carbon dioxide capture and utilization from steel-making industry[J]. Nippon Technology Report, 2021, 417(5): 45.
[40]
NEDO. 2050 Development of a solid catalyst process for carbon dioxide and ethylene glycol polymerization [EB/OL]. [2022-03-11]. https://www.nedo.go.jp/activities/CA_mitou_005.html, 2021.
Michitaka S, Kiyoshi F, Shinji H. Recent development of ironmaking technology in JFE Steel toward carbon neutrality [J]. JFE Technology Report, 2022, 49(2): 1.
[43]
The Technical Society, The Iron and Steel Institute of Japan. Production and technology of iron and steel in Japan during 2021[J]. ISIJ International, 2022, 62(6): 1027.