Refractory/coal-slag compatibility studies: progress to date
Conference
·
OSTI ID:6359550
Approximately 60 different refractories have been exposed to both acidic and basic molten coal slags at temperatures between 1500 and 1600/sup 0/C. A dense fused-cast chrome-spinel refractory has demonstrated superior resistance to corrosion by a wide variety of coal slags (CaO/SiO/sub 2/ = 0.2 to 1.7). Refractories containing >30% chromia reacted with all types of slags to form complex spinel reaction products. Alumina refractories were intermediate in performance in acidic slags and poor in basic slags. Magnesia-chrome refractories containing free MgO performed poorly in acidic slags, but somewhat better in basic slags. Preferential dissolution of MgO was observed in all cases. 12 figures.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6359550
- Report Number(s):
- CONF-810528-17; ON: DE83007742
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
36 MATERIALS SCIENCE
360205 -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
COAL GASIFICATION
COMPATIBILITY
CORROSION
GASIFICATION
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MATERIALS TESTING
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
REFRACTORIES
SLAGS
SPINELS
TESTING
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
010404* -- Coal
Lignite
& Peat-- Gasification
36 MATERIALS SCIENCE
360205 -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
COAL GASIFICATION
COMPATIBILITY
CORROSION
GASIFICATION
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MATERIALS TESTING
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
REFRACTORIES
SLAGS
SPINELS
TESTING
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS