Co-treatment of Waste From Steelmaking Processes: Steel Slag-Based Carbon Capture and Storage by Mineralization

Qing Zhao; Xinyi Chu; Xiaohui Mei; Qingzhang Meng; Jingyu Li; Chengjun Liu; Henrik Saxén; Ron Zevenhoven

doi:10.3389/fchem.2020.571504

Co-treatment of Waste From Steelmaking Processes: Steel Slag-Based Carbon Capture and Storage by Mineralization

Front Chem. 2020 Oct 16:8:571504. doi: 10.3389/fchem.2020.571504. eCollection 2020.

Authors

Qing Zhao^{1

2}, Xinyi Chu², Xiaohui Mei^{1

2}, Qingzhang Meng², Jingyu Li², Chengjun Liu^{1

2}, Henrik Saxén³, Ron Zevenhoven³

Affiliations

¹ Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), Northeastern University, Shenyang, China.
² School of Metallurgy, Northeastern University, Shenyang, China.
³ Process and Systems Engineering Laboratory, Åbo Akademi University, Åbo/Turku, Finland.

Abstract

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.

Keywords: carbon capture and storage; carbon emission reduction; mineralization; steel slag; waste management.

Publication types

Review