微波-氢气协同还原在钢铁工业中的应用前景

doi:10.13228/j.boyuan.issn0449-749x.20230158

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Abstract Under the background of "carbon peaking" and "carbon neutrality" advocated by the state,the steel industry urgently needs to develop and apply green and low-carbon frontier technology,and the current hydrogen metallurgy technology is an important direction for the development of the steel industry,which has received extensive attention at home and abroad. Hydrogen metallurgy is a new type of metallurgical technology,using hydrogen as a reducing agent,which can achieve an efficient,environmentally friendly and energy-saving metallurgical process. In recent years,microwave technology,as a new heating method,has been widely used in the field of metallurgy,with significant characteristics such as accelerating the reduction reaction,improving metallurgical efficiency,and cleaning and environmental protection. Based on the advantages of hydrogen metallurgy technology and microwave technology to examine the energy structure of ironmaking from the perspective of the ternary relationship of "carbon-electricity-hydrogen",and proposes a new reduction method combining microwave and hydrogen-"microwave-hydrogen co-reduction",which has higher reaction rate and lower temperature requirements,can achieve precise control and optimization of the reaction process,and is expected to become one of the important technologies in the field of hydrogen metallurgy. Under the strategic goal of "dual carbon",combined with the current situation of domestic steel carbon emissions,the research progress of hydrogen metallurgy technology at home and abroad is first reviewed,mainly including blast furnace hydrogen-rich reduction,hydrogen-rich base reduction,hydrogen-rich fusion reduction and plasma hydrogen reduction. The application status and mechanism of microwave technology in the field of metallurgical melting were analyzed. Secondly,the research progress of new microwave-hydrogen co-reduction methods and some problems in the development process are introduced,which provides new ideas for the development of hydrogen metallurgy technology. Finally,the potential value of the new microwave-hydrogen co-reduction method in the field of hydrogen metallurgy in the future is discussed,and the long-term prospect is put forward for promoting the development of the new reduction method.

Key words： steel industry hydrogen metallurgy microwave microwave-hydrogen synergistic reduction "dual carbon"goal

Received: 30 March 2023

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	TONG Shuai
	AI Liqun
	HONG Lukuo
	LI Yaqiang
	SUN Caijiao
	WANG Xufeng

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TONG Shuai,AI Liqun,HONG Lukuo等. Prospects of microwave-hydrogen synergistic reduction in steel industry[J]. Iron and Steel, 2023, 58(10): 151-162.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20230158 OR http://www.chinamet.cn/Jweb_gt/EN/Y2023/V58/I10/151

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