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According to the ion and molecule coexistence theory,the activity model of Al2O3-BaO-B2O3ternary slag system was established,and the influences of BaO/Al2O3molar ratio,B2O3mole fraction and temperature on the activity of the slag system were investigated.Finally,the equal activity curves were drawn with the model results.The results show that with the increase of BaO/Al2O3ratio,the activity of Al2O3is significantly reduced,the activity of BaO·Al2O3is increased obviously,and the activity of 2Al2O3·B2O3is also decreased.With the increase of B2O3mole fraction,the activity of BaO·Al2O3decreased significantly,while the activities of BaO·2B2O3and 2Al2O3·B2O3increased.In addition,the influence of temperature on the activities of different components is comparatively smaller than the influence of BaO/Al2O3ratio and B2O3mole fraction.
According to the ion and molecule coexistence theory, the activity model of Al2O3-BaO-B2O3ternary slag system was established, and the influences of BaO / Al2O3 molar ratio, B2O3 mole fraction and temperature on the activity of the slag system were investigated .Finally, the equal activity curves were drawn with the model results. The results show that with the increase of BaO / Al2O3ratio, the activity of Al2O3 significantly reduced, the activity of BaO · Al2O3is significantly obviously, and the activity of 2Al2O3 · B2O3is also decreased .With the increase of B2O3 mole fractions, the activity of BaO · Al2O3 decreased greatly, while the activities of BaO · 2B2O3 and 2Al2O3 · B2O3 increased. In addition, the influence of temperature on the activities of different components is comparatively smaller than the influence of BaO / Al2O3ratio and B2O3mole fractions.