Viscosity and Phase Transformation in Coal Ash Slags near and below the Temperature of Critical Viscosity

The objective of this work was to derive more fundamental and comprehensive information about the dominant cause of the viscosity increase in ash slags below Tev. On the basis of thermodynamic considerations these were evaluated; 1) conditions for the formation of stable phases during cooling proces...

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Bibliographic Details
Published in:Energy & fuels 1994-11, Vol.8 (6), p.1324-1336
Main Author: Nowok, Jan W
Format: Article
Language:English
Subjects:
Applied sciences
Coal ash
Combustion of solid fuels
Combustion. Flame
Cooling
Crystal growth
Crystallization
Decomposition
Differential thermal analysis
Energy
Energy. Thermal use of fuels
Entropy
Exact sciences and technology
Interfaces (materials)
Morphology
Phase transitions
Theoretical studies. Data and constants. Metering
Thermodynamics
Viscosity
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Summary:The objective of this work was to derive more fundamental and comprehensive information about the dominant cause of the viscosity increase in ash slags below Tev. On the basis of thermodynamic considerations these were evaluated; 1) conditions for the formation of stable phases during cooling process of slag, 2) the morphology of precipitates, and 3) the relationship between phase transformation and viscosity. Results will be presented in detail at the article.
ISSN:0887-0624
1520-5029
DOI:10.1021/ef00048a022