skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Low melting high lithia glass compositions and methods

Abstract

The invention relates to methods of vitrifying waste and for lowering the melting point of glass forming systems by including lithia formers in the glass forming composition in significant amounts, typically from about 0.16 wt % to about 11 wt %, based on the total glass forming oxides. The lithia is typically included as a replacement for alkali oxide glass formers that would normally be present in a particular glass forming system. Replacement can occur on a mole percent or weight percent basis, and typically results in a composition wherein lithia forms about 10 wt % to about 100 wt % of the alkali oxide glass formers present in the composition. The present invention also relates to the high lithia glass compositions formed by these methods. The invention is useful for stabilization of numerous types of waste materials, including aqueous waste streams, sludge solids, mixtures of aqueous supernate and sludge solids, combinations of spent filter aids from waste water treatment and waste sludges, supernate alone, incinerator ash, incinerator offgas blowdown, or combinations thereof, geological mine tailings and sludges, asbestos, inorganic filter media, cement waste forms in need of remediation, spent or partially spent ion exchange resins or zeolites, contaminated soils,more » lead paint, etc. The decrease in melting point achieved by the present invention desirably prevents volatilization of hazardous or radioactive species during vitrification.« less

Inventors:
; ; ;
Issue Date:
Research Org.:
Westinghouse Savannah River Company Aiken, SC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1174527
Patent Number(s):
6,630,419
Application Number:
10/108,847
Assignee:
Westinghouse Savannah River Company OSTI
DOE Contract Number:  
AC0989SR18035
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Jantzen, Carol M., Pickett, John B., Cicero-Herman, Connie A., and Marra, James C. Low melting high lithia glass compositions and methods. United States: N. p., 2003. Web.
Jantzen, Carol M., Pickett, John B., Cicero-Herman, Connie A., & Marra, James C. Low melting high lithia glass compositions and methods. United States.
Jantzen, Carol M., Pickett, John B., Cicero-Herman, Connie A., and Marra, James C. Tue . "Low melting high lithia glass compositions and methods". United States. https://www.osti.gov/servlets/purl/1174527.
@article{osti_1174527,
title = {Low melting high lithia glass compositions and methods},
author = {Jantzen, Carol M. and Pickett, John B. and Cicero-Herman, Connie A. and Marra, James C.},
abstractNote = {The invention relates to methods of vitrifying waste and for lowering the melting point of glass forming systems by including lithia formers in the glass forming composition in significant amounts, typically from about 0.16 wt % to about 11 wt %, based on the total glass forming oxides. The lithia is typically included as a replacement for alkali oxide glass formers that would normally be present in a particular glass forming system. Replacement can occur on a mole percent or weight percent basis, and typically results in a composition wherein lithia forms about 10 wt % to about 100 wt % of the alkali oxide glass formers present in the composition. The present invention also relates to the high lithia glass compositions formed by these methods. The invention is useful for stabilization of numerous types of waste materials, including aqueous waste streams, sludge solids, mixtures of aqueous supernate and sludge solids, combinations of spent filter aids from waste water treatment and waste sludges, supernate alone, incinerator ash, incinerator offgas blowdown, or combinations thereof, geological mine tailings and sludges, asbestos, inorganic filter media, cement waste forms in need of remediation, spent or partially spent ion exchange resins or zeolites, contaminated soils, lead paint, etc. The decrease in melting point achieved by the present invention desirably prevents volatilization of hazardous or radioactive species during vitrification.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {10}
}

Patent:

Save / Share: