| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Towards a Future of Sustainable Production and Processing of Metals and Alloys
|
| Presentation Title |
Melting Efficiently Rare Earth Steel by Whole Scrap Steel |
| Author(s) |
Qian Long, Xu Gao, Jie Zeng, You Zhou, Zai-Xue Zheng, Wanlin Wang |
| On-Site Speaker (Planned) |
Qian Long |
| Abstract Scope |
Aimed to efficiently recycle and utilize the scrap steel to produce high-end micro-alloyed rare earth steel, this study proposed an integrated process of Si-Mn deoxidation, aluminum enhanced deoxidation, and rare earth micro-alloying based on the high alkalinity refining slag, achieving efficient control of sulfur and oxygen impurities in scrap steel, and producing 7CrSiMnVMo rare earth steel by rare earth Ce alloying. The results show that the sulfur concentration of the 7CrSiMnVMo rare earth steel is only 0.0023%; meanwhile, the total oxygen concentration of scrap steel can reach below 0.0018% after combining Si-Mn deoxidation, aluminum enhancing deoxidation, and rare earth micro-alloying with high alkalinity refining slag. And it can form finely dispersed Ce2O3 and Ce2O2S rare earth inclusions by the addition of Ce after sulfur and oxygen control, and the rare earth recovery rate can reach over 80%. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Recycling and Secondary Recovery, Sustainability, Pyrometallurgy |