Study on the foaming of CaO-SiO2-FeO slags

Part I. Foaming parameters and experimental results

Kimihisa Ito, R. J. Fruehan

Research output: Contribution to journalArticle

163 Citations (Scopus)

Abstract

In order to understand the effect of slag composition on foaming in iron and steelmaking processes, slag foaming was quantitatively studied for CaO-SiO2-FeO slags in the temperature range of 1250 °C to 1400 °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, and the average foam life ( τ). The effects of P2O5, S, MgO, and CaF2 on foaming were studied. As expected, slag foaming increased with increasing viscosity and decreasing surface tension. It was found that suspended second-phase solid particles such as CaO, 2CaO SiO2, and MgO stabilized the foam and had a larger effect on foaming than changes in viscosity and surface tension for the slags studied.

Original languageEnglish
Pages (from-to)509-514
Number of pages6
JournalMetallurgical Transactions B
Volume20
Issue number4
DOIs
Publication statusPublished - 1989 Aug
Externally publishedYes

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foaming
slags
Slags
phosphorus pentoxide
foams
Surface tension
Foams
interfacial tension
Viscosity
viscosity
Steelmaking
solid phases
Iron
Gases
iron
Chemical analysis
gases

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Metals and Alloys
  • Materials Chemistry
  • Mechanics of Materials
  • Engineering(all)

Cite this

Study on the foaming of CaO-SiO2-FeO slags : Part I. Foaming parameters and experimental results. / Ito, Kimihisa; Fruehan, R. J.

In: Metallurgical Transactions B, Vol. 20, No. 4, 08.1989, p. 509-514.

Research output: Contribution to journalArticle

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