Melter feed viscosity during conversion to glass: Comparison between low‐activity waste and high‐level waste feeds
نویسندگان
چکیده
منابع مشابه
Model for the conversion of nuclear waste melter feed to glass
The rate of batch-to-glass conversion is a primary concern for the vitrification of nuclear waste, as it directly influences the life cycle of the cleanup process. This study describes the development of an advanced model of the cold cap, which augments the previous model by further developments on the structure and the dynamics of the foam layer. The foam layer on the bottom of the cold cap co...
متن کاملEffect of bubbles and silica dissolution on melter feed rheology during conversion to glass.
Nuclear-waste melter feeds are slurry mixtures of wastes with glass-forming and glass-modifying additives (unless prefabricated frits are used), which are converted to molten glass in a continuous electrical glass-melting furnace. The feeds gradually become continuous glass-forming melts. Initially, the melts contain dissolving refractory feed constituents that are suspended together with numer...
متن کاملApplication of evolved gas analysis to cold-cap reactions of melter feeds for nuclear waste vitrification
In the vitrification of nuclear wastes, the melter feed (a mixture of nuclear waste and glass-forming and modifying additives) experiences multiple gas-evolving reactions in an electrical glass-melting furnace. We employed the thermogravimetry-gas chromatography–mass spectrometry (TGA-GC–MS) combination to perform evolved gas analysis (EGA). Along with identifying the gases evolved, we performe...
متن کاملConversion of nuclear waste into nuclear waste glass: Experimental investigation and mathematical modeling
The melter feed, slurry, or calcine charged on the top of a pool of molten glass forms a floating layer of reacting material called the cold cap. Between the cold-cap top, which is covered with boiling slurry, and its bottom, where bubbles separate it from molten glass, the temperature changes by up to 1000 K. The processes that occur over this temperature interval within the cold cap include l...
متن کاملCrystallization during processing of nuclear waste glass
In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: a b s t r a c t a r t i c l e i n f o Under typical glass-processing conditions, crystals nucleate, grow, and dissolve in a ...
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ژورنال
عنوان ژورنال: Journal of the American Ceramic Society
سال: 2017
ISSN: 0002-7820,1551-2916
DOI: 10.1111/jace.15352