An integrated assessment model for cost-effective long-term decarbonization pathways in China's iron and steel industry

作者：Ying Wang, Yuxin Yan, Hanxiao Liu, Xiang Luo, Tao Wu, Chenghang Zheng, Qingyang Lin, Xiang Gao · 发表于：Renewable and Sustainable Energy Reviews · 年份：2025 · DOI：10.1016/j.rser.2025.115639 · 被引用次数：11 · 研究领域：Iron and Steelmaking Processes、Metallurgical Processes and Thermodynamics、Extraction and Separation Processes

Decarbonization in the iron and steel industry is critical for climate action and sustainable development . Existing research on cost-effective decarbonization technologies is limited, often overlooking optimal multi-technology strategies that balance decarbonization and economic feasibility . We developed an integrated assessment model to optimize long-term decarbonization strategies by evaluating low-carbon technologies based on decarbonization costs, penetration rates, payback times , service life, and benefit-cost ratio. The model aims to identify optimal dynamic development pathways for a series of decarbonization technologies up to 2035, minimizing both costs and carbon emissions through scenarios prioritizing emissions or costs. Under optimal pathways, the aggregate technology decarbonization potential and dynamic trends in industry CO 2 emission intensity and costs were analyzed. We examined the impacts of changes in key input parameters, leading to variable multi-technology dynamic development pathways. Our findings indicate that decarbonization costs for BF-BOF (Blast furnace-basic oxygen furnace) and EAF (Electric arc furnace) technologies range from −-0.5 to 0.4 yuan/kgCO 2 and -0.3 to −0.02 yuan/kgCO 2 , demonstrating high economic viability under higher carbon prices. Optimal development pathways suggest significant annual changes within BF-BOF and EAF routes, classifying technologies by cumulative decarbonization potential into advanced, moderate, and conservat...