Computer-assisted analyses of the thermodynamic properties of slags in coal-combustion systems
Equations were developed for the analysis of the thermodynamic properties of molten silicate solutions; the equations take into account the unusual concentration and temperature dependence of the solution properties of ordered systems. For binary systems, these equations were coupled with an optimization computer program to analyze all reliable thermodynamic data, including phase diagrams, free energies and enthalpies of formation of compounds, activities of components, enthalpies of mixing, entropies of fusion, miscibility gaps, etc. In this manner, we analyzed data for five binary systems: CaO-SiO/sub 2/, Na/sub 2/O-SiO/sub 2/, CaO-Al/sub 2/O/sub 3/, Na/sub 2/O-Al/sub 2/O/sub 3/, and Al/sub 2/O/sub 3/-SiO/sub 2/. The results of the binary systems were combined, and an analysis done of three ternary systems: CaO-Al/sub 2/O/sub 3/-SiO/sub 2/, Na/sub 2/O-CaO-SiO/sub 2/, and Na/sub 2/O-Al/sub 2/O/sup 3/-SiO/sub 2/. A tentative analysis of the quaternary system, Na/sub 2/O-CaO-Al/sub 2/O/sub 3/-SiO/sub 2/, was also undertaken. 53 references, 51 figures, 3 tables.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5677845
- Report Number(s):
- ANL/FE-83-19; ON: DE84002682
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
COAL
COMBUSTION PRODUCTS
COMPUTER CALCULATIONS
DATA
DIAGRAMS
DISPERSIONS
ENERGY
ENERGY SOURCES
ENTHALPY
ENTROPY
EQUATIONS
EXPERIMENTAL DATA
FOSSIL FUELS
FREE ENERGY
FUELS
INFORMATION
MATERIALS
MINERALS
MIXTURES
MOLTEN SALTS
NUMERICAL DATA
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHYSICAL PROPERTIES
SALTS
SILICA
SILICATES
SILICON COMPOUNDS
SILICON OXIDES
SLAGS
SODIUM COMPOUNDS
SODIUM OXIDES
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
010600* -- Coal
Lignite
& Peat-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
COAL
COMBUSTION PRODUCTS
COMPUTER CALCULATIONS
DATA
DIAGRAMS
DISPERSIONS
ENERGY
ENERGY SOURCES
ENTHALPY
ENTROPY
EQUATIONS
EXPERIMENTAL DATA
FOSSIL FUELS
FREE ENERGY
FUELS
INFORMATION
MATERIALS
MINERALS
MIXTURES
MOLTEN SALTS
NUMERICAL DATA
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHYSICAL PROPERTIES
SALTS
SILICA
SILICATES
SILICON COMPOUNDS
SILICON OXIDES
SLAGS
SODIUM COMPOUNDS
SODIUM OXIDES
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES