Thermodynamics of Simultaneous Desulfurization and Dephosphorization of Silicomanganese Alloy
- Title
- Thermodynamics of Simultaneous Desulfurization and Dephosphorization of Silicomanganese Alloy
- Author
- 박주현
- Keywords
- Silicomanganese (SiMn) alloy; Reducing dephosphorization; Desulfurization; MnO-slags
- Issue Date
- 2017-02
- Publisher
- Springer
- Citation
- Conference of Applications of Process Engineering Principles in Materials Processing, Energy and Environmental Technologies, Page. 495-499
- Abstract
- Because sulfur and phosphorus are very harmful in steel products, there are increasing requirements for refining these elements from ferroalloys industries. Hence, in the present study, simultaneous desulfurization (de-S) and reducing dephosphorization (Rde-P) from silicomanganese (SiMn) alloy were investigated using metal-slag equilibration method under highly reducing condition at 1773 K. Experiments were carried out by equilibration between SiMn alloy and MnO-based slag in graphite crucible under p(O2) = 10−18 atm. Slag composition was designed by changing basicity (CaO/SiO2) and MnO content at fixed Al2O3 (=20%) and MgO (=5%) contents. De-S ratio increased with increasing basicity until C/S = 1.5 whereas Rde-P ratio was not significantly affected by slag basicity. This was because thermodynamic driving force of de-S reaction was greater than that of Rde-P reaction under present experimental conditions. The de-S and Rde-P ratios commonly increased with decreasing oxygen partial pressure.
- URI
- https://link.springer.com/chapter/10.1007%2F978-3-319-51091-0_48https://repository.hanyang.ac.kr/handle/20.500.11754/103139
- ISBN
- 978-3-319-51090-3; 978-3-319-51091-0
- DOI
- 10.1007/978-3-319-51091-0_48
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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