Estimation of phosphorus distribution ratio at the end of blowing in BOF

Authors

  • Z. M. Slović Key to Metals d.o.o., Belgrade, Serbia
  • D. Bradarić KOTEH inženjering d.o.o., Smederevo, Serbia
  • Karlo Raić Faculty of Technology and Metallurgy,University of Belgrade
  • J. Z. Slović Holycode D.O.O. Beograd, Serbia

DOI:

https://doi.org/10.30544/646

Keywords:

BOF, phosphorus distribution ratio, dephosphorization, activity coefficient of P2O5

Abstract

In integrated steel plants, the removal of phosphorous normally takes place during the primary basic oxygen furnace (BOF) steelmaking process. Phosphorous is usually introduced to the integrated steelmaking process through blast furnace additions, such as iron ore, coke, sinter, and fluxes. Among the others parameters such as optimizing the charging system, oxygen supply system, oxygen lance parameters of the converter, the flux quality in combination with temperature process control can improve the BOF efficiency of Dephosphorization. Phosphorus partition ratio (LP) is usually used to evaluate the thermodynamic efficiency of the dephosphorization of slags with different compositions in steelmaking processes. However, this parameter is only useful in equilibrium conditions, and it is not accurate when used to evaluate slag efficiency in industrial processes. Because of this, the aim of this work was to study the phosphorus partition ratio estimated from the experimental results in real plant conditions of two different BOF steel plants and compare them with well-known published models. In the present study, data from two steel plants (further Plant A and Plant B) were evaluated applying Healy’s, Suito and Inoui’s, Zhang’s as well as Assis’s equations. The calculated values were compared against measured values.

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Published

2021-12-21

How to Cite

Slović, Z. M., D. Bradarić, Karlo Raić, and J. Z. Slović. 2021. “Estimation of Phosphorus Distribution Ratio at the End of Blowing in BOF”. Metallurgical and Materials Engineering 27 (4):425-36. https://doi.org/10.30544/646.

Issue

Section

Steelmaking and processing - devoted to Prof. Ljubomir Nedeljković