| Maximum solubilities of NiO, CoO, FeO and Cu20 have been measured,
at different temperatures, in a standard silicate solvent containing 18.4 mole per cent
Na20, 31.6 mole per cent K20 and 50 mole per cent Si02• Solubilities have been determined
by equilibrating the pure oxides with the solvent melt and chemically analyzing
the saturated melt. Furthermore, the effect of NiO addition on the viscosity of the
melt was studied using a viscometer to substantiate some of the conclusions of the
solubility measurements. |