| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Investigate on Dechromization in Converter during Vanadium Extraction and Semi-steel Steelmaking Processes Based on the Ion and Molecule Coexistence Theory |
| Author(s) |
Wang Zhou, Zhao Chen, Xiaoxi Chen, Bailin Luo, Changfa Zhou, Gai Fu, Xiaowen Yu |
| On-Site Speaker (Planned) |
Wang Zhou |
| Abstract Scope |
A thermodynamic model has been developed to investigate the effects of basicity, temperature and carbon content on chromium removal during vanadium extraction and semi-steel steelmaking processes, based on the ion and molecule coexistence theory (IMCT). The results indicate that the carbon content in semi-steel and molten steel has the greatest influence on chromium removal, followed by smelting temperature and basicity of slag. Low carbon content, low smelting temperature and high basicity are conducive to chromium removal. Hence, in order to ensure the smooth operation of the subsequent steelmaking process, it is difficult to reduce the chromium content in semi steel to a lower level during vanadium extraction process. The chromium content in molten steel can be reduced to 0.004 wt.% during semi-steel steelmaking process while the carbon content in molten steel is 0.03 wt.%, the smelting temperature is 1923 K, and the basicity of slag is 3.0. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Extraction and Processing, Iron and Steel, Modeling and Simulation |