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- W2078677122 abstract "Two engineering-scale in-can melting runs were completed. One run evaluated the melting of PW-8a-2 type waste containing cesium and ruthenium with 76-101 type frit. The other run established a melting rate of 30.9 kg/hr for an 8-in.-diam can containing a drop-in fin assembly made from an alloy having an expansion coefficient similar to that of the glass. High sodium feed was successfully spray calcined by lowering the calciner chamber temperature and using an additive in the feed material. The fluidized-bed calciner testing continued with emphasis on developing several mechanical components and engineering a hot cell installation and a full-scale prototype. A variable speed, weigh belt-type solids feeder was evaluated as a frit feeding device. A 76-183 melt composition was developed for PW-7a waste. Leach testing of thermally treated glasses was continued and feeders were evaluated. Comprehensive examination of 72-68 glass samples annealed for 1 year has been completed and has indicated no significant change over the results observed at 2 months. Additionally, characterization and identification work performed on the high-neodymium rare earth phase has indicated that an apatite-type structure exists within the temperature range of 500 to 750/sup 0/C but only after a minimum time of 1 week at temperature. Preliminary impact tests on a gravity-sintered 304 stainless steel matrix demonstrate that the majority of the cracks go around, not through, the Al/sub 2/O/sub 3/ supercalcine cores. Gravity sintering parameters for stainless steel matrices have been reduced to 1050/sup 0/C for 8 hr in a stagnant atmosphere, and both stainless steel Al/sub 2/O/sub 3/ and pure stainless steel spheres have been successfully fabricated." @default.
- W2078677122 created "2016-06-24" @default.
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- W2078677122 date "1977-08-01" @default.
- W2078677122 modified "2023-10-18" @default.
- W2078677122 title "Research and Development Activities Waste Fixation Program. Quarterly progress report, July--September 1976" @default.
- W2078677122 doi "https://doi.org/10.2172/7211264" @default.
- W2078677122 hasPublicationYear "1977" @default.
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