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Process and composition for the immobilization of radioactive and hazardous wastes in borosilicate glass

  • US 7,825,288 B2
  • Filed: 06/22/2009
  • Issued: 11/02/2010
  • Est. Priority Date: 02/23/2004
  • Status: Expired due to Fees
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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