Process and composition for the immobilization of radioactive and hazardous wastes in borosilicate glass
First Claim
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1. A borosilicate glass consisting essentially of:
- about 1 to about 1.3 mole parts of a combination of monovalent cation oxides (R2O) and divalent cation oxides (RO);
about 1 to about 1.4 mole parts trivalent cation oxides (R2O3);
about 1.2 to about 4.2 mole parts of a combination of tetravalent cation oxides (RO2) and pentavalent cation oxides (R2O5); and
wherein SiO2 is present in an amount greater than 30 weight percent, B2O3 is present in an amount between 8.7 and 15.3 weight percent, Al2O3 is present in an amount between 7 and 15.1weight percent, CaO is present in an amount between 0.2 and 2.3 weight percent, and fluorine is present in an amount between about 1 to about 3 weight percent.
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Abstract
The present invention provides processes to immobilize radioactive and/or hazardous waste in a borosilicate glass, the waste containing one or more of radionuclides, hazardous elements, hazardous compounds, and/or other compounds. The invention also provides borosilicate glass compositions for use in immobilizing radioactive and/or hazardous waste.
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10 Claims
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1. A borosilicate glass consisting essentially of:
- about 1 to about 1.3 mole parts of a combination of monovalent cation oxides (R2O) and divalent cation oxides (RO);
about 1 to about 1.4 mole parts trivalent cation oxides (R2O3);
about 1.2 to about 4.2 mole parts of a combination of tetravalent cation oxides (RO2) and pentavalent cation oxides (R2O5); and
wherein SiO2 is present in an amount greater than 30 weight percent, B2O3 is present in an amount between 8.7 and 15.3 weight percent, Al2O3 is present in an amount between 7 and 15.1weight percent, CaO is present in an amount between 0.2 and 2.3 weight percent, and fluorine is present in an amount between about 1 to about 3 weight percent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- about 1 to about 1.3 mole parts of a combination of monovalent cation oxides (R2O) and divalent cation oxides (RO);
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