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 CO₂, metallurgical slag, and wastewater. Enhancing the development and deployment of treating waste from the steelmaking process will be environment friendly and resource-saving. Capturing CO₂ 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.

钢铁行业是能源密集型行业，在炼钢过程中会产生大量废物/副产品，例如CO ₂，冶金炉渣和废水。加强对炼钢过程中废物处理的开发和部署将有利于环境和节约资源。捕获CO ₂由于矿渣的高碱度，通过矿化处理的钢渣（SS）被认为是绝佳的选择。本文综述了矿化对钢渣基碳捕集与封存（SS-CCS）的最新研究。比较了SS-CCS的三种途径，分别是直接气固碳化，直接含水碳化和间接碳化。此外，还讨论了SS-CCS进一步发展所面临的挑战和前景。