Development status and prospect of flue gas recirculation sintering process under current situation
CHEN Fusong1, YUAN Yaqiang1, KANG Hongyi1, PANG Zhuogang1, GUO Hao2, GAO Yan3, ZUO Haibin1
1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China; 2. MCC Capital Engineering Research Incorporation Limited, Beijing 100176, China; 3. Hebei Province Low Carbon Metallurgy and Process Control Technology Innovation Center, Qinhuangdao 066000, Hebei, China
Abstract：Currently, the production requirements for energy conservation and emission reduction in China's steel industry are becoming increasingly strict. Collaborative treatment of pollution and carbon reduction has become a new direction for industry development, especially in the sintering process, which has problems such as high solid fuel consumption and large emissions of various pollutants. The flue gas recirculating sintering process has the advantages of reducing solid fuel consumption and reducing pollutant emissions. Therefore, the generation mechanism of various pollutants in sintering flue gas, the removal mechanism after flue gas recirculation sintering, and the impact of changes in each component of the recirculating flue gas on sintering production are summarized, so as to explain the technical principle of flue gas recirculation sintering process and provide theoretical support for the reasonable application of flue gas recirculation sintering process. At the same time, a systematic summary is also conducted on the application effects and existing problems of typical processes at home and abroad. Based on the principle of flue gas recirculation sintering process and the emission law of main components in sintering flue gas, it is concluded that the refined selective flue gas recirculation process can achieve efficient energy conservation and emission reduction. Finally, based on current situation of further increasing demand for pollution reduction and carbon reduction, a feasible plan for the future progress of flue gas recirculation sintering process is proposed, providing reference for the widespread application and optimization improvement of this process in sintering production.
陈富松, 袁亚强, 康宏毅, 庞焯刚, 郭豪, 高彦, 左海滨. 当前形势下烟气循环烧结工艺发展现状及展望[J]. 中国冶金, 2024, 34(2): 21-34.
CHEN Fusong, YUAN Yaqiang, KANG Hongyi, PANG Zhuogang, GUO Hao, GAO Yan, ZUO Haibin. Development status and prospect of flue gas recirculation sintering process under current situation[J]. China Metallurgy, 2024, 34(2): 21-34.
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2024, Vol. 34 
