Doctoral Dissertations

Abstract

"A study of phase relations and thermodynamic properties of phases in the system CaO-FeO-Fe₂O₃-SiO₂ was conducted at 1450°C and 1550°C. The region of stability of the different phases was determined by microscopic examination of the specimens. The thermodynamic properties of liquid were determined by analyses of quenched samples equilibrated at oxygen pressures from about 10⁻¹¹ to 1 atm. Isothermal phase diagrams were constructed from data for 0, 5, 10, 20, and 30 weight percent silica sections of the CaO-FeO-Fe₂O₃-SiO₂ system, and the effect of temperature and increased silica additions on the oxygen solubility of the liquid oxides was measured. Multicomponent Gibbs-Duhem integrations were used to calculate the activities of the oxide components CaO, FeO, and SiO₂ from the measured oxygen activity data on the liquid oxides. The results were discussed in terms of the formation and behavior of slags in the Basic Oxygen Furnace steelmaking process"--Abstract, page [ii].

Advisor(s)

Morris, Arthur E., 1935-

Committee Member(s)

Kisslinger, Fred, 1919-2010
Lewis, Gordon
O'Keefe, T. J. (Thomas J.)
McDonald, H. O. (Hector O.)

Department(s)

Materials Science and Engineering

Degree Name

Ph. D. in Metallurgical Engineering

Sponsor(s)

National Lime Association
United Nations Preparatory Educational, Scientific, and Cultural Commission

Publisher

University of Missouri--Rolla

Publication Date

1969

Pagination

x, 188 pages

Note about bibliography

Includes bibliographical references (pages 183-187).

Rights

© 1969 Muharren Timucin, All rights reserved.

Document Type

Dissertation - Open Access

File Type

text

Language

English

Subject Headings

Refractory materials -- Testing
Thermodynamic equilibrium
Slag
Steel -- Metallurgy

Thesis Number

T 2257

Print OCLC #

6009345

Electronic OCLC #

832732181

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