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| Thermodynamic Modeling for Controls of Deoxidation and Oxide Inclusions in Molten Steel |
| ZHANG Xiaobing |
| Technology Center; Shanghai No.1 Iron & Steel Co.; Baosteel Group; Shanghai 200431 |
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Cite this article:
ZHANG Xiaobing. Thermodynamic Modeling for Controls of Deoxidation and Oxide Inclusions in Molten Steel. Acta Metall Sin, 2004, 40(5): 509-514 .
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Abstract Component activities in CaO-MgO-Al2O3-SiO2
and CaO-MnO-Al2O3-SiO2 systems were calculated
by a sub-regular solution model of a multi-component system.
A thermodynamic modeling for controls of deoxidation and oxide
inclusion in molten steel was developed based on these calculations,
which was used for thermodynamic calculations for deoxidation,
slag-melt equilibration and oxide-melt equilibration
in order to control the deoxidation and compositions of
oxide inclusion of steel. The results of model
applications are validated with the industrial
database such as the silicon deoxidation through
slag-melt equilibration in LF, the calcium
treatment of Al-Si killed steel and the composition of
oxide inclusion formed during solidification in caster. The
presented modeling can be used in deoxidation
control and oxide inclusion control in steel.
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Received: 26 May 2003
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