Phosphorus Partition and Phosphate Capacity of Basic Oxygen Steelmaking Slags

Phillip Brian Drain; Brian Joseph Monaghan; Raymond James Longbottom; Michael Wallace Chapman; Guangqing Zhang; Sheng Jason Chew

doi:10.2355/isijinternational.ISIJINT-2018-129

Fundamentals of High Temperature Processes

Phosphorus Partition and Phosphate Capacity of Basic Oxygen Steelmaking Slags

Phillip Brian Drain , Brian Joseph Monaghan, Raymond James Longbottom, Michael Wallace Chapman, Guangqing Zhang, Sheng Jason Chew

Author information

Keywords: basic oxygen steelmaking (BOS), dephosphorisation, phosphorous partition, phosphate capacity, laboratory data, slags

JOURNAL OPEN ACCESS FULL-TEXT HTML

2018 Volume 58 Issue 11 Pages 1965-1971

DOI https://doi.org/10.2355/isijinternational.ISIJINT-2018-129

Browse “Advance online publication” version

Details

Abstract

The phosphorus partition (L_P) and phosphate capacity () were measured for slags in the CaO–SiO₂–MgO–Fe_tO–(MnO–Al₂O₃–TiO₂–P₂O₅) system over temperatures representative of basic oxygen steelmaking. The measured L_P values were found to be in good agreement with those predicted from the model of Assis et al. The oxygen potential of the slag-metal systems studied was also evaluated and used in combination with the measured L_P to calculate the of the slags. Capacity values in the range of 7.77×10¹⁶ to 4.27×10¹⁹ for temperatures 1550°C to 1700°C were obtained.

Correlations of with common measures of slag basicity (v-ratio and optical basicity) were sought and reported. Consistent with other researchers it was found that the L_P and increased with increasing slag basicity and decreasing temperature.

Corresponding author

Register with J-STAGE for free!