| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Stability, Phase Transformations, and Reactive Phase Formation in Electronic Materials XIX
|
| Presentation Title |
CALPHAD-assisted Analyses of BOF Slag Modification and Reduction |
| Author(s) |
Han-Yu Wang, Wan-Yu Huang, Yung-Chang Liu, Kuan-Ju Lin, Shih-kang Lin |
| On-Site Speaker (Planned) |
Han-Yu Wang |
| Abstract Scope |
Basic-oxygen furnace (BOF) slag is a byproduct during the steelmaking process, composed of high free-CaO (unreacted CaO), FeO, and P2O5 contents. BOF slag has been used as aggregates for road and hydraulic construction. However, free-CaO hydrolyzes coming in contact with water and its volume increases which causes safety issue. In this study, a new approach for recycling BOF slag is to apply it on construction as BF slag cement which could substitute for Portland cement. It involves materials modification with multicomponent complex reactions at high temperatures. With the aid of CALPHAD thermodynamic modeling, we optimize the reaction path of BOF slag which satisfied all the criteria for low melting temperature and no solid phase precipitation in order to lower the CaO, FeO, and P2O5 contents during an entire process. Reaction path of BOF slag is carefully investigated and an optimized reaction path is found. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |