The mass production of steel is inevitably accompanied by large quantities of slags. The treatment of ironmaking and steelmaking slags is a great challenge in the sustainable development of the steel industry. Japan and China are two major steel producing countries that have placed a large emphasis on developing new technologies to decrease slag emission or promote slag valorization. Slags are almost com-pletely reused or recycled in Japan. However, due to stagnant infrastructural investments, future applications of slags in conventional sectors are expected to be difficult. Exploring new functions or applications of slags has become a research priority in Japan. For example, the utiliza-tion of steelmaking slags in offshore seabeds to create marine forests is under development. China is the top steel producer in the world. The utilization ratios of ironmaking and steelmaking slags have risen steadily in recent years, driven largely by technological advances. For ex-ample, hot stage processing of slags for materials as well as heat recovery techniques has been widely applied in steel plants with good results. However, increasing the utilization ratio of basic oxygen furnace slags remains a major challenge. Technological innovations in slag recycling are crucial for the steel industries in Japan and China. Here, the current status and developing trends of utilization technologies of slags in both countries are reviewed.

Hiroyuki Matsuura;Xiao Yang;Guangqiang Li;Zhangfu Yuan;Fumitaka Tsukihashi

Graduate School of Engineering,The University of Tokyo,Tokyo 113-8656,Japan;Key Laboratory of Coastal Environment and Resources of Zhejiang Province,School of Engineering,Westlake University,Hangzhou 310024,China;Institute of Advanced Technology,Westlake Institute for Advanced Study,Hangzhou 310024,China;Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China;Collaborative Innovation Center of Steel Technology,University of Science and Technology Beijing,Beijing 100083,China;The University of Tokyo,Tokyo 113-8656,Japan

矿物冶金与材料学报

[1]Hiroyuki Matsuura;Xiao Yang;Guangqiang Li;Zhangfu Yuan;Fumitaka Tsukihashi-.Recycling of ironmaking and steelmaking slags in Japan and China)[J].矿物冶金与材料学报,2022(04):739-749

Slags,seabeds

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