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Metallurgical and Materials Transactions B
Published in: Metallurgical and Materials Transactions B 6/2012

01-12-2012 | Communication

Thermodynamics of Reducing Refining of Phosphorus from Si-Mn Alloy Using CaO-CaF2 Slag

Authors: Jae Hong Shin, Joo Hyun Park

Published in: Metallurgical and Materials Transactions B | Issue 6/2012

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Abstract

The thermodynamic behavior of phosphide ions in the CaO-CaF2 flux in equilibrium with a SiMn(-Fe) alloy melt was investigated under a strongly reducing atmosphere at 1823 K (1550 °C). The phosphide capacity increased with increasing CaO concentration in the flux before reaching a constant value. The composition for the saturating capacity is in good agreement with the saturation content of CaO in the CaO-CaF2 flux at 1823 K (1550 °C). The relationship between the phosphide capacity and the activity of CaO in the flux exhibited a linear relationship on the logarithmic scale, indicating that phosphorus was removed from the SiMn(-Fe) melt by the reducing refining mechanism.
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Metadata
Title
Thermodynamics of Reducing Refining of Phosphorus from Si-Mn Alloy Using CaO-CaF2 Slag
Authors
Jae Hong Shin
Joo Hyun Park
Publication date
01-12-2012
Publisher
Springer US
Published in
Metallurgical and Materials Transactions B / Issue 6/2012
Print ISSN: 1073-5615
Electronic ISSN: 1543-1916
DOI
https://doi.org/10.1007/s11663-012-9722-7

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