Mathematical Modeling of Postcombustion in an Electric Arc Furnace (EAF)

Niloofar Arzpeyma; Mikael Ersson; Pär  G. Jönsson

doi:10.3390/met9050547

Metals (May 2019)

Mathematical Modeling of Postcombustion in an Electric Arc Furnace (EAF)

Niloofar Arzpeyma,
Mikael Ersson,
Pär G. Jönsson

Affiliations

Niloofar Arzpeyma: Department of Materials Science and Engineering, Royal Institute of Technology (KTH), Stockholm 100 44, Sweden
Mikael Ersson: Department of Materials Science and Engineering, Royal Institute of Technology (KTH), Stockholm 100 44, Sweden
Pär G. Jönsson: Department of Materials Science and Engineering, Royal Institute of Technology (KTH), Stockholm 100 44, Sweden

DOI: https://doi.org/10.3390/met9050547
Journal volume & issue: Vol. 9, no. 5
p. 547

Abstract

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Numerical modeling was used to study the capability of postcombustion in an electric arc furnace (EAF) equipped with virtual lance burners. The CO flow rate at the molten bath surface was estimated using the off-gas data obtained close to the outlet of an EAF. Then, the effect of the secondary oxygen flow rate on postcombustion was studied. The results show a CO flow rate of 0.6 kg·s−1 and 0.8 kg·s−1 for operation modes of burner and burner + lancing. Increase of the secondary oxygen flow rates of 60% and 70% result in 17% and 7% increase in the postcombustion ratio (PCR) for the burner and burner lancing modes, respectively.

Published in Metals

ISSN: 2075-4701 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Mining engineering. Metallurgy
Website: http://www.mdpi.com/journal/metals

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