Chemical and physical stability of refractories for use in coal gasification. Quarterly progress report, 1 August 1977--31 October 1977

Author: Rahman, S. F.
Published: United States : [publisher not identified], 1977.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1977.
Physical Description: microfiche : negative ; 11 x 15 cm
Additional Creators: Day, D. E.

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Summary

Cement-bonded, alumina and insulating castable refractories were exposed for 20 days to controlled atmospheres (CO/H/sub 2/O = 0.1; CO/H/sub 2/O = 1.0) at 1000 psia at 1000/sup 0/F (unsaturated vapor) and at saturated vapor conditions (532/sup 0/F and 466/sup 0/F, respectively). Samples were exposed in the vapor and in the liquid. Weight changes were measured by thermal gravimetric analysis. Dimensional changes were small (below 1%). Small density and porosity changes were measured. An increase in the modulus of rupture of some samples was related to the boehnite content (determined by TGA). Complex behavior between the samples exposed in the vapor and in the liquid is discussed. There is an appreciable change in the thermal expansion coefficient as a result of the exposure. This is probably related to chemical compound formation. Such changes are of importance in the development of thermal stresses during heating and cooling. (LTN)

Report Numbers

COO-2904-6

Other Subject(s)

Collection

U.S. Atomic Energy Commission depository collection.

Note

DOE contract number: EY-76-S-02-2904
OSTI Identifier 6749905
Research organization: Missouri Univ., Rolla (USA).

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