Dissolution of MgO in stagnant CaO-FeO-SiO2 slags

J. Bygden, T. DebRoy, S. Seetharaman

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The rate of dissolution of pure dense MgO compacts in synthetic, stagnant CaO-FeO-SiO2 acid slags has been studied in the temperature range 1473-1673 K. The results indicate the topochemical formation of a dense magnesiowustite layer at the interface between MgO and the slag phase. The growth of the product layer during the reaction as well as the decrease of the radius of the MgO core in partially reacted samples were measured at various time intervals by microscopic analysis. The concentration profiles of iron and magnesium in the magnesiowustite layer for various slag compositions and temperatures were measured by electron dispersive spectroscopy. The mechanism of MgO dissolution in the slag and the growth of the oxide layer are discussed in relation to the diffusivities of the cations in the solid solution.

Original languageEnglish (US)
Pages (from-to)318-323
Number of pages6
JournalIronmaking and Steelmaking
Volume21
Issue number4
StatePublished - Dec 1 1994

Fingerprint

Slags
Dissolution
Oxides
Magnesium
Cations
Solid solutions
Iron
Positive ions
Spectroscopy
Temperature
Acids
Electrons
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Bygden, J., DebRoy, T., & Seetharaman, S. (1994). Dissolution of MgO in stagnant CaO-FeO-SiO2 slags. Ironmaking and Steelmaking, 21(4), 318-323.
Bygden, J. ; DebRoy, T. ; Seetharaman, S. / Dissolution of MgO in stagnant CaO-FeO-SiO2 slags. In: Ironmaking and Steelmaking. 1994 ; Vol. 21, No. 4. pp. 318-323.
@article{661629dff8a148a1a2593369ca9fd83c,
title = "Dissolution of MgO in stagnant CaO-FeO-SiO2 slags",
abstract = "The rate of dissolution of pure dense MgO compacts in synthetic, stagnant CaO-FeO-SiO2 acid slags has been studied in the temperature range 1473-1673 K. The results indicate the topochemical formation of a dense magnesiowustite layer at the interface between MgO and the slag phase. The growth of the product layer during the reaction as well as the decrease of the radius of the MgO core in partially reacted samples were measured at various time intervals by microscopic analysis. The concentration profiles of iron and magnesium in the magnesiowustite layer for various slag compositions and temperatures were measured by electron dispersive spectroscopy. The mechanism of MgO dissolution in the slag and the growth of the oxide layer are discussed in relation to the diffusivities of the cations in the solid solution.",
author = "J. Bygden and T. DebRoy and S. Seetharaman",
year = "1994",
month = "12",
day = "1",
language = "English (US)",
volume = "21",
pages = "318--323",
journal = "Ironmaking and Steelmaking",
issn = "0301-9233",
publisher = "Maney Publishing",
number = "4",

}

Bygden, J, DebRoy, T & Seetharaman, S 1994, 'Dissolution of MgO in stagnant CaO-FeO-SiO2 slags', Ironmaking and Steelmaking, vol. 21, no. 4, pp. 318-323.

Dissolution of MgO in stagnant CaO-FeO-SiO2 slags. / Bygden, J.; DebRoy, T.; Seetharaman, S.

In: Ironmaking and Steelmaking, Vol. 21, No. 4, 01.12.1994, p. 318-323.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Dissolution of MgO in stagnant CaO-FeO-SiO2 slags

AU - Bygden, J.

AU - DebRoy, T.

AU - Seetharaman, S.

PY - 1994/12/1

Y1 - 1994/12/1

N2 - The rate of dissolution of pure dense MgO compacts in synthetic, stagnant CaO-FeO-SiO2 acid slags has been studied in the temperature range 1473-1673 K. The results indicate the topochemical formation of a dense magnesiowustite layer at the interface between MgO and the slag phase. The growth of the product layer during the reaction as well as the decrease of the radius of the MgO core in partially reacted samples were measured at various time intervals by microscopic analysis. The concentration profiles of iron and magnesium in the magnesiowustite layer for various slag compositions and temperatures were measured by electron dispersive spectroscopy. The mechanism of MgO dissolution in the slag and the growth of the oxide layer are discussed in relation to the diffusivities of the cations in the solid solution.

AB - The rate of dissolution of pure dense MgO compacts in synthetic, stagnant CaO-FeO-SiO2 acid slags has been studied in the temperature range 1473-1673 K. The results indicate the topochemical formation of a dense magnesiowustite layer at the interface between MgO and the slag phase. The growth of the product layer during the reaction as well as the decrease of the radius of the MgO core in partially reacted samples were measured at various time intervals by microscopic analysis. The concentration profiles of iron and magnesium in the magnesiowustite layer for various slag compositions and temperatures were measured by electron dispersive spectroscopy. The mechanism of MgO dissolution in the slag and the growth of the oxide layer are discussed in relation to the diffusivities of the cations in the solid solution.

UR - http://www.scopus.com/inward/record.url?scp=0028596706&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028596706&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0028596706

VL - 21

SP - 318

EP - 323

JO - Ironmaking and Steelmaking

JF - Ironmaking and Steelmaking

SN - 0301-9233

IS - 4

ER -