ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Fundamentals of High Temperature Processes
Phosphorus Partition and Phosphate Capacity of Basic Oxygen Steelmaking Slags
Phillip Brian DrainBrian Joseph MonaghanRaymond James LongbottomMichael Wallace ChapmanGuangqing ZhangSheng Jason Chew
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2018 Volume 58 Issue 11 Pages 1965-1971


The phosphorus partition (LP) and phosphate capacity () were measured for slags in the CaO–SiO2–MgO–FetO–(MnO–Al2O3–TiO2–P2O5) system over temperatures representative of basic oxygen steelmaking. The measured LP 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 LP 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 LP and increased with increasing slag basicity and decreasing temperature.

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© 2018 by The Iron and Steel Institute of Japan
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