多元系製銑および製鋼スラグ中の擬二元相互拡散係数の近似的推定

抄録

The quasibinary interdiffusivities of CaO-SiO₂, Al₂O₃-SiO₂ and CaO-Al₂O₃ in the CaO-SiO₂-Al₂O₃ liquid slag and those of CaO-SiO₂, FeO-SiO₂ and CaO-FeO in the CaO-SiO₂-FeO liquid slag which is in equilibrium with iron at 1 500°C have been calculated by means of the following equation for cationic conductor;. The cationic tracer diffusivities, in the all range of liquid composition of the both slag systems have been estimated from the relation between the viscosity and the tracer diffusivity.
The order of the quasibinary interdiffusivities in CaO-SiO₂-Al₂O₃ and CaO-Si0₂-FeO slags are 10_-7 and 10_-6cm²/sec at 1 500°C, respectively.The quasibinary interdiffusivities at 1600°C are 2.5 and 1.5 times as much as those at 1 500°C for the blast furnace type slag and the steelmaking type slag, respectively. The accuracies are about ±0.5 and ±1.0 in common logarithms, respectively.
The ways to use the quasibinary interdiffusivities for the practical problems have been discussed.