Slag foaming in electric furnace steelmaking

Kimihisa Ito, R. J. Fruehan

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

In order to understand the effect of slag composition on foaming in an EAF, slag foaming was quantitatively studied for CaO-SiO2-FeO slags at temperatures ranging from 1,250 to 1,400°C. It was found that slag foaming could be characterized by a foaming index (Σ) which is equal to the retention or traveling time of the gas in the slag. The effects of P2O5, S, MgO and CaF2 on foaming was studied. As expected, slag foaming increased with increasing viscosity and decreasing surface tension. Suspended second phase solid particles such as CaO, 2CaO-SiO2 and MgO stabilized the foam and were more important than viscosity and surface tension. Anticipated foaming in the EAF was estimated using experimentally obtained parameter Σ for various operating conditions and slag compositions.

Original languageEnglish
Pages (from-to)55-60
Number of pages6
JournalI & SM
Volume16
Issue number8
Publication statusPublished - 1989 Aug
Externally publishedYes

Fingerprint

Electric furnaces
Steelmaking
Slags
Surface tension
Viscosity
Chemical analysis
Foams
Gases

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Ito, K., & Fruehan, R. J. (1989). Slag foaming in electric furnace steelmaking. I & SM, 16(8), 55-60.

Slag foaming in electric furnace steelmaking. / Ito, Kimihisa; Fruehan, R. J.

In: I & SM, Vol. 16, No. 8, 08.1989, p. 55-60.

Research output: Contribution to journalArticle

Ito, K & Fruehan, RJ 1989, 'Slag foaming in electric furnace steelmaking', I & SM, vol. 16, no. 8, pp. 55-60.
Ito K, Fruehan RJ. Slag foaming in electric furnace steelmaking. I & SM. 1989 Aug;16(8):55-60.
Ito, Kimihisa ; Fruehan, R. J. / Slag foaming in electric furnace steelmaking. In: I & SM. 1989 ; Vol. 16, No. 8. pp. 55-60.
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