An interacting pair model for alkaline binary and ternary liauid silicates: Application to the systems Na2O-K2O-SiO2 and Na2O-Cs2O-SiO2

摘要

Among all the available models describing the structure ofmolten silicates, that of Pelton et al. Allows accurate fittingof the experimental data of the free energies in the binarysystems MO-SiO2 with M=Fe, Mn, Pb, and Ca. An extension to theternary systems Mo-M'O-SiO2, where M and M' are alkaline metals,is proposed. A statistical treatment of the configurations ofthe solution gives a meaning to the new parameters. The mixedalkaline effect is quite well shown b the application of themodel to the ternary systems K2O-Na2-SiO2 and Cs2O-Na2O-SiO2,in particular, in the calculation of the configurational entropy.