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Title: Plasma vitrification of waste materials

Abstract

This invention provides a process wherein hazardous or radioactive wastes in the form of liquids, slurries, or finely divided solids are mixed with finely divided glassformers (silica, alumina, soda, etc.) and injected directly into the plume of a non-transferred arc plasma torch. The extremely high temperatures and heat transfer rates makes it possible to convert the waste-glassformer mixture into a fully vitrified molten glass product in a matter of milliseconds. The molten product may then be collected in a crucible for casting into final wasteform geometry, quenching in water, or further holding time to improve homogeneity and eliminate bubbles. 4 figs.

Inventors:
; ;
Issue Date:
Research Org.:
Westinghouse Hanford Co
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
489079
Patent Number(s):
5,637,127
Application Number:
PAN: 8-566,238; TRN: 97:011393
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (United States) RLO; SCA: 052001; PA: EDB-97:084527; SN: 97001799031
DOE Contract Number:  
AC06-87RL10930
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 10 Jun 1997
Country of Publication:
United States
Language:
English
Subject:
05 NUCLEAR FUELS; HAZARDOUS MATERIALS; RADIOACTIVE WASTES; VITRIFICATION; LIQUID WASTES; SLURRIES; PARTICULATES; PLASMA FURNACES; RADIOACTIVE WASTE PROCESSING

Citation Formats

McLaughlin, D.F., Dighe, S.V., and Gass, W.R. Plasma vitrification of waste materials. United States: N. p., 1997. Web.
McLaughlin, D.F., Dighe, S.V., & Gass, W.R. Plasma vitrification of waste materials. United States.
McLaughlin, D.F., Dighe, S.V., and Gass, W.R. Tue . "Plasma vitrification of waste materials". United States.
@article{osti_489079,
title = {Plasma vitrification of waste materials},
author = {McLaughlin, D.F. and Dighe, S.V. and Gass, W.R.},
abstractNote = {This invention provides a process wherein hazardous or radioactive wastes in the form of liquids, slurries, or finely divided solids are mixed with finely divided glassformers (silica, alumina, soda, etc.) and injected directly into the plume of a non-transferred arc plasma torch. The extremely high temperatures and heat transfer rates makes it possible to convert the waste-glassformer mixture into a fully vitrified molten glass product in a matter of milliseconds. The molten product may then be collected in a crucible for casting into final wasteform geometry, quenching in water, or further holding time to improve homogeneity and eliminate bubbles. 4 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {6}
}