EMPIRICAL MODEL FOR FORMULATION OF CRYSTAL-TOLERANT HLW GLASSES

Journal Article · Wed Mar 07 04:00:00 EST 2012 · Ceramic Transactions

OSTI ID:1038053

AA, KRUGER; J, MATYAS; AR, HUCKLEBERRY; JD, VIENNA; CA, RODRIGUEZ

Historically, high-level waste (HLW) glasses have been formulated with a low liquideus temperature (T{sub L}), or temperature at which the equilibrium fraction of spinel crystals in the melt is below 1 vol % (T{sub 0.01}), nominally below 1050 C. These constraints cannot prevent the accumulation of large spinel crystals in considerably cooler regions ({approx} 850 C) of the glass discharge riser during melter idling and significantly limit the waste loading, which is reflected in a high volume of waste glass, and would result in high capital, production, and disposal costs. A developed empirical model predicts crystal accumulation in the riser of the melter as a function of concentration of spinel-forming components in glass, and thereby provides guidance in formulating crystal-tolerant glasses that would allow high waste loadings by keeping the spinel crystals small and therefore suspended in the glass.

• Research Organization: Hanford Site (HNF), Richland, WA (United States)
• Sponsoring Organization: USDOE Office of Environmental Management (EM)
• DOE Contract Number: AC27-08RV14800
• OSTI ID: 1038053
• Report Number(s): ORP-52018 Rev 0
• Journal Information: Ceramic Transactions, Journal Name: Ceramic Transactions; ISSN CETREW; ISSN 1042-1122
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
CAPITAL
GLASS
HEAT EXCHANGERS
HIGH-LEVEL RADIOACTIVE WASTES
PRODUCTION
SPINELS
WASTES