(S084)Dissolution Kinetics of Alumina Inclusion into Molten CaO CaO--Al Al22OO33--Fe tO-MgO -SiO 2 Slag

摘要

Demand for clean steels is increasing due to product quality requirements. In a secondary refining process (RH process), Fe FetO component in the molten slag plays important roles on the cleanliness of the steel including alumina inclusion removal. According to previous investigations, there are certain amount of Fe FetO in the RH O slag. For this reason, steel cleanliness may be affect affected by Fe ed FetO in the slag. And previous investigations [1 O 1-3] also showed that rate controlling step of alumina dissolution rate was the mass transfer in the slag phase and the most important parameter to evaluate the dissolution rate was viscosity of the slag slag. In the present study, . dissolution rate of alumina inclusion in the RH slag was investigated.