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Title: Lead iron phosphate glass as a containment medium for disposal of high-level nuclear waste

Abstract

Lead-iron phosphate glasses containing a high level of Fe.sub.2 O.sub.3 for use as a storage medium for high-level radioactive nuclear waste. By combining lead-iron phosphate glass with various types of simulated high-level nuclear waste, a highly corrosion resistant, homogeneous, easily processed glass can be formed. For corroding solutions at 90.degree. C., with solution pH values in the range between 5 and 9, the corrosion rate of the lead-iron phosphate nuclear waste glass is at least 10.sup.2 to 10.sup.3 times lower than the corrosion rate of a comparable borosilicate nuclear waste glass. The presence of Fe.sub.2 O.sub.3 in forming the lead-iron phosphate glass is critical. Lead-iron phosphate nuclear waste glass can be prepared at temperatures as low as 800.degree. C., since they exhibit very low melt viscosities in the 800.degree. to 1050.degree. C. temperature range. These waste-loaded glasses do not readily devitrify at temperatures as high as 550.degree. C. and are not adversely affected by large doses of gamma radiation in H.sub.2 O at 135.degree. C. The lead-iron phosphate waste glasses can be prepared with minimal modification of the technology developed for processing borosilicate glass nuclear wasteforms.

Inventors:
 [1];  [1]
  1. (Oak Ridge, TN)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
OSTI Identifier:
867029
Patent Number(s):
US 4847008
Assignee:
United States of America as represented by Department of Energy (Washington, DC) ORNL
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
lead; iron; phosphate; glass; containment; medium; disposal; high-level; nuclear; waste; lead-iron; glasses; containing; level; storage; radioactive; combining; various; types; simulated; highly; corrosion; resistant; homogeneous; easily; processed; formed; corroding; solutions; 90; degree; solution; ph; values; range; rate; 10; times; comparable; borosilicate; presence; forming; critical; prepared; temperatures; 800; exhibit; melt; viscosities; 1050; temperature; waste-loaded; readily; devitrify; 550; adversely; affected; doses; gamma; radiation; 135; minimal; modification; technology; developed; processing; wasteforms; high-level radioactive; lead-iron phosphate; iron phosphate; corrosion rate; radioactive nuclear; corrosion resistant; temperature range; gamma radiation; nuclear waste; various types; storage medium; phosphate glass; phosphate glasses; ph value; silicate glass; level radioactive; waste glass; ph values; adversely affect; phosphate waste; adversely affected; high-level nuclear; borosilicate glass; glasses containing; solution ph; level nuclear; /588/501/976/

Citation Formats

Boatner, Lynn A., and Sales, Brian C. Lead iron phosphate glass as a containment medium for disposal of high-level nuclear waste. United States: N. p., 1989. Web.
Boatner, Lynn A., & Sales, Brian C. Lead iron phosphate glass as a containment medium for disposal of high-level nuclear waste. United States.
Boatner, Lynn A., and Sales, Brian C. Sun . "Lead iron phosphate glass as a containment medium for disposal of high-level nuclear waste". United States. https://www.osti.gov/servlets/purl/867029.
@article{osti_867029,
title = {Lead iron phosphate glass as a containment medium for disposal of high-level nuclear waste},
author = {Boatner, Lynn A. and Sales, Brian C.},
abstractNote = {Lead-iron phosphate glasses containing a high level of Fe.sub.2 O.sub.3 for use as a storage medium for high-level radioactive nuclear waste. By combining lead-iron phosphate glass with various types of simulated high-level nuclear waste, a highly corrosion resistant, homogeneous, easily processed glass can be formed. For corroding solutions at 90.degree. C., with solution pH values in the range between 5 and 9, the corrosion rate of the lead-iron phosphate nuclear waste glass is at least 10.sup.2 to 10.sup.3 times lower than the corrosion rate of a comparable borosilicate nuclear waste glass. The presence of Fe.sub.2 O.sub.3 in forming the lead-iron phosphate glass is critical. Lead-iron phosphate nuclear waste glass can be prepared at temperatures as low as 800.degree. C., since they exhibit very low melt viscosities in the 800.degree. to 1050.degree. C. temperature range. These waste-loaded glasses do not readily devitrify at temperatures as high as 550.degree. C. and are not adversely affected by large doses of gamma radiation in H.sub.2 O at 135.degree. C. The lead-iron phosphate waste glasses can be prepared with minimal modification of the technology developed for processing borosilicate glass nuclear wasteforms.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}

Patent:

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