Fluid-bed process for SYNROC production

Technical Report · Wed Mar 30 04:00:00 EST 1983

OSTI ID:6017354

Ackerman, F J; Grens, J Z; Ryerson, F J; Hoenig, C L; Bazan, F; Peters, P E; Smith, R; Campbell, J H

SYNROC is a titanate-based ceramic waste developed for the immobilization of high-level nuclear reactor waste. Lawrence Livermore National Laboratory (LLNL) has investigated a fluid-bed technique for the large-scale production of SYNROC precursor powders. Making SYNROC in a fluid bed permits slurry drying, calcination and reduction-oxidation reactions to be carried out in a single unit. We present the results of SYNROC fluid-bed studies from two fluid-bed units 10 cm in diameter: an internally heated fluid-bed unit developed by Exxon Idaho and an externally heated unit constructed at LLNL. Bed operation over a range of temperatures, feed rates, fluidizing rates, and redox conditions indicate that SYNROC powders of a high density and a uniform particle size can be produced. These powders facilitate the densification step and yield dense ceramics (greater than 95% theoretical density) with well-developed phases and low leaching rates.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6017354
• Report Number(s): UCRL-53405; ON: DE83016873
• Country of Publication: United States
• Language: English

Related Subjects

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ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM NITRATES
BARIUM COMPOUNDS
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CALCIUM COMPOUNDS
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CESIUM COMPOUNDS
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GADOLINIUM COMPOUNDS
GADOLINIUM NITRATES
HIGH-LEVEL RADIOACTIVE WASTES
LEACHING
MANAGEMENT
MATERIALS
NEODYMIUM COMPOUNDS
NEODYMIUM NITRATES
NITRATES
NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
POWDERS
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RADIOACTIVE MATERIALS
RADIOACTIVE WASTE PROCESSING
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SYNTHETIC MATERIALS
SYNTHETIC ROCKS
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
ZIRCONIUM COMPOUNDS
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