Published June 10, 1997 | Version v1
Patent Metadata-only

Plasma vitrification of waste materials

Creators

Description

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

Availability note (English)

Available from Patent and Trademark Office, Box 9, Washington, DC 20232 (United States).

Additional details

Publishing Information

Imprint Pagination
[10 p.].
IPC:
Int. Cl. C03B 5/16.
IPC
Int. Cl. C03B 5/16.
Patent number
US patent document 5,637,127/A/

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
28065093
Subject category
S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
HAZARDOUS MATERIALS; LIQUID WASTES; PARTICULATES; PLASMA FURNACES; RADIOACTIVE WASTE PROCESSING; RADIOACTIVE WASTES; SLURRIES; VITRIFICATION
Descriptors DEC
DISPERSIONS; FURNACES; MANAGEMENT; MATERIALS; MIXTURES; PARTICLES; RADIOACTIVE MATERIALS; SUSPENSIONS; WASTE MANAGEMENT; WASTE PROCESSING; WASTES

Optional Information

Funding organization
USDOE, Washington, DC (United States).
Secondary number(s)
US patent application 8-566,238.