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Low melting high lithia glass compositions and methods

  • US 6,630,419 B2
  • Filed: 03/28/2002
  • Issued: 10/07/2003
  • Est. Priority Date: 05/02/1998
  • Status: Expired due to Fees
First Claim
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1. An alkali oxide-magnesia-silica glass composition suitable for immobilizing radioactive, hazardous, or mixed waste, comprising:

  • (a) SiO2 in an amount ranging from about 40 wt % to about 68 wt %;

    (b) MgO in an amount ranging from about 5.0 wt % to about 15 wt %;

    (c) Na2O in an amount ranging from about 7.0 wt % to about 20 wt %;

    (d) Li2O in an amount ranging from about 3.0 wt % to about 9.0 wt %;

    (e) a waste loading, said waste loading being up to about 70% by wt; and

    (f) said loaded glass composition being opaque.

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