Activity and activity coefficient of Iron Oxides in the liquid FeO-Fe2O3-CaO-SiO2 slag systems at intermediate oxygen partial pressures

Henao, Hector M. and Itagaki, Kimio (2007) Activity and activity coefficient of Iron Oxides in the liquid FeO-Fe2O3-CaO-SiO2 slag systems at intermediate oxygen partial pressures. Metallurgical and Materials Transactions B, 38 5: 769-780.


Author Henao, Hector M.
Itagaki, Kimio
Title Activity and activity coefficient of Iron Oxides in the liquid FeO-Fe2O3-CaO-SiO2 slag systems at intermediate oxygen partial pressures
Journal name Metallurgical and Materials Transactions B   Check publisher's open access policy
ISSN 1073-5615
1543-1916
Publication date 2007
Sub-type Article (original research)
DOI 10.1007/s11663-007-9077-7
Volume 38
Issue 5
Start page 769
End page 780
Total pages 2
Place of publication Boston
Publisher Springer
Language eng
Subject 091407 Pyrometallurgy
Abstract At present, there is a scarcity of data on the activities of iron oxides in the FeO-Fe2O3-CaO-SiO2 slag system at intermediate oxygen partial pressures and temperatures relevant to sulfide smelting and nonferrous metallurgy. The present study provides relevant data at temperatures between 1573 and 1673 K and partial pressures of oxygen between 10-9 and 10-4 atm. The experiments were carried out by equilibrating the slag in a CO-CO2 gas mixture in a platinum crucible, after which the phases of all the experimental samples, including the platinum foil, were analyzed by electron probe microanalysis (EPMA). Where only liquid phase or liquid phase and tridymite (SiO2) were observed, wet chemical analysis was used to determine the ratio of (mass pct Fe2+)/(mass pct Fe3+). Activity and activity coefficients for FeO (liquid) and FeO1.33 (solid) were calculated. Tendencies of the effect of the (CaO/SiO2) ratio, temperature, and oxygen partial pressure on these thermochemical quantities are discussed in this article.
Keyword Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Alloys
Melts
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Chemical Engineering Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 6 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 6 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Access Statistics: 252 Abstract Views  -  Detailed Statistics
Created: Thu, 16 Apr 2009, 08:56:52 EST by Ms Sarada Rao on behalf of School of Engineering