Coal slag-refractory compatibility studies: progress to date
Approximately 60 different refractories have been exposed to both acidic and basic molten coal slags at temperatures between 1500/sup 0/ 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 - 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. 9 figures, 1 table.
- Research Organization:
- Argonne National Lab., IL
- OSTI ID:
- 6180105
- Journal Information:
- Ceram. Eng. Sci. Proc.; (United States), Journal Name: Ceram. Eng. Sci. Proc.; (United States) Vol. 2:11-12; ISSN CESPD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010404* -- Coal
Lignite
& Peat-- Gasification
36 MATERIALS SCIENCE
360205 -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
COAL GASIFICATION
COMPARATIVE EVALUATIONS
CORROSION RESISTANCE
CORROSIVE EFFECTS
DATA
DISPERSIONS
EXPERIMENTAL DATA
FUNCTIONAL MODELS
FURNACES
GASIFICATION
IMPURITIES
INFORMATION
IRON COMPOUNDS
IRON OXIDES
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MEDIUM PRESSURE
MIXTURES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PH VALUE
PRESSURE DEPENDENCE
PROCESS DEVELOPMENT UNITS
REFRACTORIES
SLAGS
TEMPERATURE DEPENDENCE
THERMOCHEMICAL PROCESSES
TIME DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE