Recycling of ironmaking and steelmaking slags in Japan and China

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

doi:10.1007/s12613-021-2400-5

Volume 29 Issue 4

Apr. 2022

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2022 > 29(4): 739-749

Hiroyuki Matsuura, Xiao Yang, Guangqiang Li, Zhangfu Yuan, and Fumitaka Tsukihashi, Recycling of ironmaking and steelmaking slags in Japan and China, Int. J. Miner. Metall. Mater., 29(2022), No. 4, pp. 739-749. https://doi.org/10.1007/s12613-021-2400-5

Cite this article as:

Hiroyuki Matsuura, Xiao Yang, Guangqiang Li, Zhangfu Yuan, and Fumitaka Tsukihashi, Recycling of ironmaking and steelmaking slags in Japan and China, Int. J. Miner. Metall. Mater., 29(2022), No. 4, pp. 739-749. https://doi.org/10.1007/s12613-021-2400-5

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Invited Review

Recycling of ironmaking and steelmaking slags in Japan and China

+ Author Affiliations

Corresponding authors:
Xiao Yang E-mail: yangxiao@westlake.edu.cn

Fumitaka Tsukihashi E-mail: tsukihashif@nifty.com
Received: 20 September 2021; Revised: 13 December 2021; Accepted: 22 December 2021; Available online: 25 December 2021

Abstract

Abstract

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 completely 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 utilization 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 example, 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.
- ironmaking;
- steelmaking;
- slag;
- recycling;
- seawater;
- stabilization

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