Compositional Variation Tests on DuraMelter 100 with LAW Sub-Envelope A3 Feed in Support of the LAW Pilot Melter, VSL-01R62N0-1, Rev. 2 (Final Report)

Technical Report · Wed Jan 01 04:00:00 EST 2003

DOI:https://doi.org/10.2172/1526013· OSTI ID:1526013

Matlack, Keith S. ^[1]; Gong, Weiliang ^[1]; Pegg, Ian L. ^[1]

---

1. The Catholic Univ. of America, Washington, DC (United States)

The Vitreous State Laboratory at The Catholic University of America (VSL) is developing and testing glass formulations for RPP-WTP waste envelopes to provide data to meet the RPP-WTP contract requirements and to support system design activities. That work is based upon small scale batch melts ("crucible melts") using waste envelope simulants. Selected formulations have also been tested in small-scale continuously -fed joule-heated melters (DM 10 and DM 100 systems) and, ultimately, in the LAW Pilot Melter. Such melter tests provide information on key process factors such as feed processing behavior, dynamic effects during processing, sulfate incorporation, processing rates, off-gas amounts and compositions, foaming control, etc., that cannot be reliably obtained from crucible melts. The principal objective of the work described in this report was to collect the necessary small-scale melter test data with a LAW Sub-Envelope A3 waste simulant in order to support the next series of tests with the same melter feed on the LAW Pilot Melter. While the earlier tests were based on nominal feed compositions, the objective of the present work, and the parallel LAW Pilot Melter tests, was to determine the effects of process variations around the nominal composition and, in particular, to evaluate variations in the ratio of waste to glass formers. The motivation for these tests is that the process should be robust enough to accommodate reasonable variations in the feed make-up without deleterious consequences such as the formation of a salt layer on the molten glass pool, unfavorable processing behavior, or adverse feed rheology or melt and glass product properties.

• Research Organization: Hanford Site (HNF), Richland, WA (United States)
• Sponsoring Organization: USDOE Office of Environmental Management (EM)
• DOE Contract Number: AC27-01RV14136
• OSTI ID: 1526013
• Report Number(s): ORP--63485, Rev. 0; VSL-01R62N0-1, Rev. 2, 01/31/2003
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE