Description of a pilot plant to produce a pelleted form from simulated ICPP high-level calcined wastes

Technical Report · Sat Mar 01 04:00:00 EST 1980

DOI:https://doi.org/10.2172/5597113· OSTI ID:5597113

Priebe, S. J.; Valentine, J. H.

The pilot plant uses techniques learned in the laboratory to combine calcine with solid and liquid binders to form hard, leach-resistant pellets. The pilot plant is designed to process up to 25 kg/h of calcine and will provide information necessary to verify the operational feasibility of pelletizing calcined waste. Also, information for the design of a possible full-scale pelletizing plant will be obtained. All components of the pelletizing operations are described. The solids feed system consists of two loss-in-weight feeders: one for calcine and one for solid binders. Intimate mixing of the solids is accomplished in a screw mixer-feeder. A metering pump is used to pump liquid binders to the pelletizer through a spray nozzle. A 12.7 mm mesh, vibro screen separator removes oversize pellets, leaving the pelletizer. A 0-6 kW microwave-heated dryer operating at 150 to 200/sup 0/C removes moisture from the pellets in about 15 minutes. To impart leach resistance, the pellets are heat treated at 800 to 900/sup 0/C for 1 to 2 hrs in a kiln. Pellets move down through a set of 6 to 8 stacked, rotating trays inside the kiln. Pellets are collected from the heat treater and tested for strength and leach resistance. An off-gas system cools and removes dust present in the off-gas from the pilot plant. 20 figures.

• Research Organization: Exxon Nuclear Idaho Co., Inc., Idaho Falls (USA)
• DOE Contract Number: AC07-79ID01675
• OSTI ID: 5597113
• Report Number(s): ENICO-1032
• Country of Publication: United States
• Language: English

Related Subjects

052001* -- Nuclear Fuels-- Waste Processing
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
DESIGN
FABRICATION
FUNCTIONAL MODELS
MANAGEMENT
MOLDING
OFF-GAS SYSTEMS
OPERATION
PELLETIZING
PELLETS
PHASE TRANSFORMATIONS
PILOT PLANTS
PROCESSING
RADIOACTIVE WASTE PROCESSING
SOLIDIFICATION
WASTE MANAGEMENT
WASTE PROCESSING