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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 uranium oxides The decrease in melting point achieved by the present invention desirably prevents volatilization of hazardous or radioactive species during vitrification.

Inventors:
; ; ;
Issue Date:
Research Org.:
Westinghouse Savannah River Company
Sponsoring Org.:
USDOE
OSTI Identifier:
1174500
Patent Number(s):
6624103
Application Number:
09/850,777
Assignee:
Westinghouse Savannah River Company
Patent Classifications (CPCs):
C - CHEMISTRY C03 - GLASS C03C - CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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/1174500.
@article{osti_1174500,
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 uranium oxides 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 = {9}
}

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Works referenced in this record:

Elastic and Viscous Properties of Several Potash-Silica Glasses in the Annealing Range of Temperature*
journal, March 1941


Vitrification of Simulated Fernald K-65 Silo Waste at Low Temperature
report, January 1998


Systems approach to nuclear waste glass development
journal, July 1986


Ion-channel match in mixed alkali glasses
journal, June 1991


Elastic and Viscous Properties of Several Soda-Silica Glasses in the Annealing Range of Temperature
journal, January 1937