Abstract
Legacy tank waste from plutonium production at the Hanford site is planned for vitrification at the Waste Treatment and Immobilization Plant (WTP). The accumulation of spinel crystals in the melter, discharge throat and riser is a possible operational concern wherein clogging and/or subsequent failure of the high level waste (HLW) melter may occur. Experiments were conducted in a full-scale, room temperature test platform that is prototypic of the WTP HLW melter to characterize the particle settling in the riser. The experimental system consists of an acrylic discharge riser and throat attached to a feed tank that allows for visual observation of the particle behavior. Silicone oil and magnetite particles were used as simulants for the molten glass and spinel crystals. A set of equations for wall-corrected, cloud settling of particles at low particle concentration is presented that closely matches the experimentally determined settling rate.
| Original language | English |
|---|---|
| Pages (from-to) | 38-41 |
| Number of pages | 4 |
| Journal | Materials Letters |
| Volume | 236 |
| DOIs | |
| State | Published - Feb 1 2019 |
Keywords
- Computational fluid dynamics
- Particle settling
- Spinel settling
- Waste glass discharge model
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