The Effect of Quartz Particle Size and Melt Viscosity on HLW Melter Feed Using Pellet Test Response - 16226
- Pacific Northwest National Laboratory Richland, Richland, WA 99352 (United States)
- U.S. Department of Energy, Office of River Protection, Richland, WA 99352 (United States)
Melter performance is affected by various physical and chemical parameters of the feed. To study the effect of these parameters on waste glass melting efficiency, we monitored the volume expansion of feed pellets in response to heating. This study focuses on the effects of quartz particle size and melt viscosity on a simplified high-alumina high-level waste melter feed labeled A19. In this research the A19 feed was prepared with eight different partitions of quartz particle size ranging from 5 to 250 μm and six modified A19 feeds were formulated to produce melts of viscosities that varied from 1 to 30 Pa s at 1050 deg. C. The volume change of the pellets was monitored with a camera and the volume of pellets was calculated from the profile area of the images. Collected data were then analyzed to characterize the melting behavior of the feed. The low-temperature expansion of the pellet from 400 deg. C to 600 deg. C, a temperature interval at which complex feed reactions occur, was reduced with increasing quartz particle size and viscosity. Foaming occurred from 800 deg. C to 1000 deg. C as the pores were sealed by the connected glass-forming melt. Small sizes of quartz particles caused excessive foaming and earlier onset of foaming, in comparison to larger quartz particle sizes. As is well known, too small or too big quartz particles and high melt viscosity inhibit the rate of melting. (authors)
- Research Organization:
- WM Symposia, Inc., PO Box 27646, 85285-7646 Tempe, AZ (United States)
- OSTI ID:
- 22838093
- Report Number(s):
- INIS-US-19-WM-16226; TRN: US19V1286083448
- Resource Relation:
- Conference: WM2016: 42. Annual Waste Management Symposium, Phoenix, AZ (United States), 6-10 Mar 2016; Other Information: Country of input: France; 11 refs.; available online at: http://archive.wmsym.org/2016/index.html
- Country of Publication:
- United States
- Language:
- English
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