Prediction of chloride solubility in CaO–Al2O3–SiO2 glass systems

A glass-encapsulated calcium phosphate wasteform for the immobilization of actinide-, fluoride-, and chloride-containing radioactive wastes from the pyrochemical reprocessing of plutonium metal

“…Certain glass-ceramic hosts have also been proposed [6]. More recently, calcium aluminosilicate glasses have been suggested for treating chloride-containing incinerator wastes [7][8][9]. It was noted that, by melting under a reducing atmosphere, CaCl 2 could be incorporated at concentrations of approximately 10 mol%.…”

MoO3 incorporation in magnesium aluminosilicate glasses

“…Aluminosilicates have good glass formation ability, high chemical durability and thermal stability [19][20][21][22][23], however applications of these glasses have been limited by their high melting temperatures and low waste loading capacities [18]. Recent studies [24][25] indicated that calcium aluminosilicate glasses are able to accommodate a large quantity of chlorine. Given that molybdenum and chlorine are both present as anions (MoO4 2-and Cl -), poorly soluble and only associated with network modifiers in silicate glass, it was considered to be worth investigating molybdate solubility in aluminosilicate glass compositions.…”

Structure of Ternary Alumino-Silicate Glasses -Conditions of the Existence of Triclusters-

“…Zhang et al 5) has reported the computa tional results of 40SiO 2 xAl 2 O 3 (60|x)CaO, x10, 20, 30 and 40, melt system. They reported that the x10 composi tion, which is located on the slope line, is triclustersfree and the other contain higher threefold coordinated oxygen frac tion as higher Al 2 11) presuming the existence of the tricluters. The recalculation results showed better agree ment between the NBO content and chloride solubility than precalculation results.…”