From phase equilibrium and thermodynamic modeling to freeze linings - the development of techniques for the analysis of complex slag systems

Mehrjardi, Ata Fallah, Hayes, Peter and Jak, Evgueni (2014). From phase equilibrium and thermodynamic modeling to freeze linings - the development of techniques for the analysis of complex slag systems. In: Phillip J. Mackey, Eric J. Grimsey, Rodney T. Jones and Geoffrey A. Brooks, Celebrating the Megascale: Proceedings of the Extraction and Processing Division Symposium on Pyrometallurgy in Honor of David G.C. Robertson. Celebrating the Megascale: An EPD Symposium in Honor of David G. C.Robertson - 2014 TMS 143rd Annual Meeting and Exhibition, San Diego, United States, (259-266). 16-20 February 2014. doi:10.1002/9781118889657.ch23


Author Mehrjardi, Ata Fallah
Hayes, Peter
Jak, Evgueni
Title of paper From phase equilibrium and thermodynamic modeling to freeze linings - the development of techniques for the analysis of complex slag systems
Conference name Celebrating the Megascale: An EPD Symposium in Honor of David G. C.Robertson - 2014 TMS 143rd Annual Meeting and Exhibition
Conference location San Diego, United States
Conference dates 16-20 February 2014
Proceedings title Celebrating the Megascale: Proceedings of the Extraction and Processing Division Symposium on Pyrometallurgy in Honor of David G.C. Robertson
Journal name TMS Annual Meeting
Place of Publication Hoboken, NJ, United States
Publisher John Wiley & Sons
Publication Year 2014
Sub-type Fully published paper
DOI 10.1002/9781118889657.ch23
Open Access Status
ISBN 9781118889619
9781118889657
Editor Phillip J. Mackey
Eric J. Grimsey
Rodney T. Jones
Geoffrey A. Brooks
Start page 259
End page 266
Total pages 8
Chapter number 23
Total chapters 68
Collection year 2015
Language eng
Formatted Abstract/Summary
Modern analytical tools, such as electron probe X-ray microanalysis (EPMA), are used in experimental characterization of phase equilibria and microstructures of complex slags. Integrated thermodynamic computer packages, such as FactSage, are used to provide more accurate descriptions of complex slag systems. These advanced methodologies have been applied to characterize dynamic steady state freeze linings in slag systems using submerged cold finger probes at controlled laboratory conditions, establishing the effects of bath chemistry, temperature, heat extraction rate and bulk fluid flow.

It has been found that stationary freeze lining deposit interface temperatures at steady state conditions can be lower than the bulk slag liquidus temperature, and that stable operation below the liquidus is possible. A conceptual framework has been developed to explain the phenomenon and the range of interface temperatures that can be obtained in dynamic steady state conditions. These findings have important implications for the design of freeze linings and possible improvements to high-temperature metallurgical operations.
Subjects 3104 Condensed Matter Physics
2211 Mechanics of Materials
2506 Metals and Alloys
Keyword Freeze lining
Phase equilibria
Q-Index Code B1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Conference Paper
Collections: School of Chemical Engineering Publications
Official 2015 Collection
 
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