Devitrification of scale melter glass in drain valve test stand
Molten glass in the drain valve test stand was accidentally cooled twice before the drain valve could be tested. The glass was sampled prior to operation of the drain valve to determine if the cooling had caused sufficient crystallization to plug the valve. The correlation of the known time-temperature-transformation (TTT) curves with the thermal history of the glass suggested that incipient crystallization of acmite should have occurred. Characterization of the glass indicated the following: Limited quantities of poorly formed acmite crystals were found, which suggested that crystallization had just begun; the small size of the acmite crystals suggested that the crystals would redissolve as the melt temperature was increased and/or be swept out of the drain valve with the molten glass; the drain valve test could proceed without pluggage due to crystallization. 6 refs., 4 figs., 1 tab.
- Research Organization:
- Savannah River Lab., Aiken, SC (USA)
- DOE Contract Number:
- AC09-76SR00001
- OSTI ID:
- 7153782
- Report Number(s):
- DPST-87-289; ON: DE88016056
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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