Extruder glass-melter process for vitrification of nuclear and o

Details Extruder glass-melter process for vitrification of nuclear and o Extruder glass-melter process for vitrification of nuclear and o

1998-04-01

1999-09-07

Taylor, Dennis L.

Hazardous or toxic waste destruction or containment

Containment

Solidification, vitrification, or cementation

651348, 252629, 405128, 588256, A62D 300

Patent

active

059478870

ABSTRACT:
A toxic waste and glass frit are fed into an extruder having a helical screw. The glass frit, as well as any glassy material and glass-forming component in the waste, are melted in the extruder as the screw transports the waste and the frit through the extruder. The screw further mixes the waste and the frit and homogenizes the resulting mixture. The extruder is designed to generate high shear rates and high internal friction and at least a portion of the heat for melting is produced by such friction. A vitrified mass of the toxic waste is discharged from the extruder. The vitrified mass can be stored as is or can be pelletized and/or encapsulated.

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