CALCINING TECHNIQUES TO EASE NUCLEAR-WASTE WOES
Journal Article
·
· Chem. Eng.
OSTI ID:4128642
Four calcination processes under study are described: (1) A rotating kiln that operates at 1500 deg F. Through the us of aluminum nitrate as a simulated waste, the kiln evaporates water and decomposes the aluminum nitrate to aluminum oxide, which goes into storage. The gases are separated, partially condensed, and scrubbed before they are vented. (2) A fluid-bed calciner that consists of a fluidized bed of previously-calcined material to which fresh feed is supplied. The calcined product is continuously removed. The oil-gases are processed by separators, adsorption towers, then scrubbers. (3) Spray tower calcination in which waste slurry is atomized at top of heated tower to evaporate the solution, the particles drying and becoming calcined as they fall. The gases are similarly treated to the rotating kiln process. (4) Pot calcination, a batch procedure in which wastes are held for 20 to 30 hr, the pot serving as a permanent storage vessel. Gases are recycled to an evaporator. (TCO)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-18-006538
- OSTI ID:
- 4128642
- Journal Information:
- Chem. Eng., Journal Name: Chem. Eng. Vol. Vol: 70: No. 7
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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