Phase equilibria in ferrous calcium silicate slags: Part II. Evaluation of experimental data and computer thermodynamic models

Nikolic, Stanko, Henao, Hector, Hayes, Peter C. and Jak, Evgueni (2008) Phase equilibria in ferrous calcium silicate slags: Part II. Evaluation of experimental data and computer thermodynamic models. Metallurgical and Materials Transactions B, 39 2: 189-199. doi:10.1007/s11663-008-9131-0


Author Nikolic, Stanko
Henao, Hector
Hayes, Peter C.
Jak, Evgueni
Title Phase equilibria in ferrous calcium silicate slags: Part II. Evaluation of experimental data and computer thermodynamic models
Journal name Metallurgical and Materials Transactions B   Check publisher's open access policy
ISSN 1073-5615
1543-1916
Publication date 2008-04-01
Year available 2008
Sub-type Article (original research)
DOI 10.1007/s11663-008-9131-0
Open Access Status
Volume 39
Issue 2
Start page 189
End page 199
Total pages 11
Place of publication New York, NY, U. S. A.
Publisher Springer
Language eng
Subject C1
8502 Mining and Extraction of Energy Resources
091405 Mining Engineering
0912 Materials Engineering
Formatted abstract
Ferrous calcium silicate slags (described by the FeO-Fe2O3-CaO-SiO2 system) are the basis for a number of slag systems used in nonferrous smelting. Characterization of this slag system is necessary to improve the design and optimization parameters of new processes, including fluxing and operating temperatures. Particularly of interest are the phase relations at intermediate oxygen partial pressures relevant to processes such as copper converting. Experimental data on the phase equilibria of these slags at controlled oxygen partial pressures in the temperature range between 1200 °C and 1350 °C are discussed, differences between various data sources are analyzed, and discrepancies are resolved. An evaluation of two thermodynamic computer models is undertaken to verify the computer-aided predictions using the experimental data. New experimental data for this system are reported for the temperature condition of 1300 °C, defined using the equilibration/rapid-quenching/electron probe microanalysis (EPMA) with wavelength dispersive detectors technique. This new information, combined with results from the previous study, has enabled the equilibrium liquidus compositions to be defined over a wide range of temperatures and oxygen partial pressures.
© The Minerals, Metals & Materials Society and ASM International 2008
Keyword Modeling
Thermodynamics
Thermodynamic model
Slag
Calcium silicate
Phase equilibrium
Q-Index Code C1
Q-Index Status Confirmed Code

 
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Created: Mon, 20 Apr 2009, 19:41:58 EST by Katherine Montagu on behalf of Mining and Minerals Process Engineering