Modeling the viscosity of silicate melts containing zinc oxide

► Model for the viscosity of silicate melts. ► The model is applied to oxide melts containing zinc oxide. ► Viscosity data for melts formed by ZnO with SiO2, Al2O3, PbO, CaO, MgO, Na2O and K2O. ► The model has only 6 adjustable parameters related to ZnO. ► The model predicts the viscosity of multicomponent melts within experimental error limits.