Oxidation Rate of Molten Steel by Argon Gas Blowing in Tundish Oxidizing Atmosphere

摘要

Experiments have been conducted on oxygen gas entrainment by argon gas jets and molten steel oxidation with argon-oxygen gas mixture blowing. Oxygen entrainment behavior of gas jets and gas-phase mass transfer with gas blowing have been evaluated. Reaction rate models for molten steel oxidation with argon gas blowing in oxidizing atmosphere have been presented. The oxidation rates of molten steel with argon gas blowing on the molten steel surface in oxidizing atmosphere and plasma heating in the tundish have been measured and the results have been analyzed from the viewpoints of kinetics. Both oxidation rates have been explained by reaction rate models considering oxygen entrainment by gas jets and gas-phase mass transfer with gas blowing.