Zhao Qing, Chu Xinyi, Mei Xiaohui, Meng Qingzhang, Li Jingyu, Liu Chengjun, Saxén Henrik, Zevenhoven Ron
Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), Northeastern University, Shenyang, China.
School of Metallurgy, Northeastern University, Shenyang, China.
Front Chem. 2020 Oct 16;8:571504. doi: 10.3389/fchem.2020.571504. eCollection 2020.
The iron and steel industry is an energy-intensive sector, and large amounts of waste/ by-products are generated during the steelmaking process, such as CO, metallurgical slag, and wastewater. Enhancing the development and deployment of treating waste from the steelmaking process will be environment friendly and resource-saving. Capturing CO by steel slag (SS) via mineralization is regarded to be an excellent choice due to the high basicity of the slag. In this paper, recent research on the steel slag-based carbon capture and storage (SS-CCS) by mineralization was summarized. Three routes of SS-CCS are compared including, direct gas-solid carbonation, direct aqueous carbonation, and indirect carbonation, respectively. Furthermore, the challenges and prospects for further development of the SS-CCS were discussed.
钢铁行业是一个能源密集型行业，在炼钢过程中会产生大量的废物/副产品，如一氧化碳、冶金炉渣和废水。加强炼钢过程中废物处理的开发和应用将有利于环境并节约资源。由于炉渣的高碱度，通过矿化作用利用钢渣（SS）捕获二氧化碳被认为是一个很好的选择。本文总结了近期关于通过矿化作用进行基于钢渣的碳捕获与封存（SS-CCS）的研究。比较了SS-CCS的三条路线，分别包括直接气固碳酸化、直接水相碳酸化和间接碳酸化。此外，还讨论了SS-CCS进一步发展面临的挑战和前景。
