Corrosion of refractories in a synthetic coal slag. Final report

Technical Report · Thu May 01 04:00:00 EDT 1986

OSTI ID:5759912

Greenberg, S; Poeppel, R B

The effects of slag temperature and slag velocity on the corrosion of chromia-containing refractories were studied in a rotating-cylinder test furnace. In this furnace, 1-in.-diam x 1-in.-high refractory cylinders are rotated at a controlled rotational speed (50 to 150 rpm) in slag of known composition, under controlled temperature (1500 and 1600/sup 0/C) and oxygen partial pressure (approx.10/sup -9/ atm) conditions. Refractories containing 60 to 80% Cr/sub 2/O/sub 3/ showed negligible corrosion at 1500/sup 0/C. At 1600/sup 0/C, significant differences between refractories of similar composition were apparent, particularly at high rotational speeds. Subtle mineralogical differences among the various high-chromia refractories are the apparent cause of the differences in corrosion rates. Low-chromia (10% Cr/sub 2/O/sub 3/) refractories showed greatly accelerated corrosion rates in comparison with the high-chromia refractories. 9 refs., 29 figs., 3 tabs.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5759912
• Report Number(s): EPRI-AP-4589; ON: DE86011177
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
36 MATERIALS SCIENCE
360205 -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHEMICAL REACTORS
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
COAL GASIFICATION
CORROSION
CORROSIVE EFFECTS
DATA
ELEMENTS
EROSION
EXPERIMENTAL DATA
GASIFICATION
INFORMATION
MATERIALS TESTING
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PARTIAL PRESSURE
REFRACTORIES
SIMULATION
SLAGS
TEMPERATURE EFFECTS
TESTING
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
VELOCITY
VERY HIGH TEMPERATURE