Thermodynamic model of the phosphorus distribution ratio of CaO-MgO-FeO-Fe2O3-SiO2 steelmaking slags

LI Peng-cheng; YANG Xue-min; ZHANG Jian

doi:10.13374/j.issn1001-053x.2014.12.007

Volume 36 Issue 12

Jul. 2021

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LI Peng-cheng, YANG Xue-min, ZHANG Jian. Thermodynamic model of the phosphorus distribution ratio of CaO-MgO-FeO-Fe2O3-SiO2 steelmaking slags[J]. Chinese Journal of Engineering, 2014, 36(12): 1608-1614. doi: 10.13374/j.issn1001-053x.2014.12.007

Citation:

LI Peng-cheng, YANG Xue-min, ZHANG Jian. Thermodynamic model of the phosphorus distribution ratio of CaO-MgO-FeO-Fe₂O₃-SiO₂ steelmaking slags[J]. Chinese Journal of Engineering, 2014, 36(12): 1608-1614. doi: 10.13374/j.issn1001-053x.2014.12.007

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Thermodynamic model of the phosphorus distribution ratio of CaO-MgO-FeO-Fe₂O₃-SiO₂ steelmaking slags

doi: 10.13374/j.issn1001-053x.2014.12.007

1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China

Received Date: 2013-08-29
Available Online: 2021-07-19

Abstract

Abstract

A thermodynamic model of the phosphorus distribution ratio(LP) of CaO-MgO-FeO-Fe₂O₃-SiO₂ steelmaking slags was developed based on the ion and molecule coexistence theory(IMCT) of slags and verified by experimental data. The predicted phosphorus distribution ratio of CaO-MgO-FeO-Fe₂O₃-SiO₂ steelmaking slags in a temperature range of 1823 to 1873 K by the developed IMCT-LPmodel is more accurate than the measured as well as the predicted phosphorus distribution by other phosphorus distribution models. The developed IMCT-LPmodel can calculate not only the total phosphorus distribution of the slags but also the respective phosphorus distribution of ion pairs(Ca²⁺ + O^2-),(Mg²⁺ + O^2-),and(Fe²⁺+ O^2-) in the slags.
- steelmaking,
- slags,
- phosphorus removal,
- basic oxides,
- thermodynamic models