Research on Oxidizing Ability of Steelmaking Slag Measured with Oxygen Sensor

摘要

The oxidizing ability of steelmaking slag is undoubtedly one of the important properties, and can be expressed really by its oxygen pressure. Use of oxygen sensor with solid electrolyte makes direct and quick determination of oxygen pressure of the slag possible instead of sampling of slag specimen and the consequent chemical analysis. The experimental results were obtained under different furnace atmosphere in the laboratory. The main factor influenced on the oxygen pressure of the slag is not only the total iron oxide but also the furnace atmosphere. Accordingly, the measured oxygen pressure of slag must be belonged to total iron oxide and the furnace atmosphere, because these oxides, such as CaO, SiO2, Al2O3, MgO, etc, are more stable than iron oxide at the steelmaking temperature.