Joint Vitrification of Various Mixed Wastes

Kiryanova, O.I.; Lashtchenova, T.N.; Lifanov, F. A.; Stefanovsky, S. V.; Tolstova, O. V.

doi:10.1557/proc-608-691

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2012

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“…The nat ural raw materials were chosen to be a matrix (basalt [2][3][4], eudialyte [5]) or a specially chosen frit [6]). There are possibilities of adulteration of solid RW (slag after burning of organic RW) in glass mass via vitrifi cation of liquid RW [7,8], including techniques of organic waste burning on a surface of glass mass [9], and RW direct fusion furnaces with microwave [10], high frequency [11], or plasma heating [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Phase composition and structure of boron-free and boron-containing sodium aluminum iron silicate glass materials for solid radioactive waste immobilization

Malinina¹,

Stefanovsky²,

Stefanovskaya³

2012

Glass Phys Chem

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Phase composition and structure of the glass materials obtained by fusing calcined emulator of radioactive solid waste (RW) with glass forming additives, namely, sodium disilicate or sodium tetraborate, have been studied. Materials obtained by quenching the melts are mostly amorphous; upon slow cooling (annealing), melts crystallize with the formation of materials containing phases of nepheline, britholite, and spinel. Their quantitative ratio depends on the mass ratio of calcinate and glass forming additives. Changes in the structure of the anionic motif of the quenched glass materials with increasing content of RW and pre cipitation of crystalline phases in the annealed materials have been studied by IR and Raman spectroscopy.

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Section: Introductionmentioning

confidence: 99%