Effects of SiO<sub>2</sub> and Al<sub>2</sub>O<sub>3</sub> Contents of Converter Slag on its Sticking to MgO-C Brick

Abstract

Using ladle slag, ferrovanadium smelting slag as well as slagging materials as starting materials, the converter slags with SiO2 contents of 11.3% to 2.6%, Al2O3 contents of 3.3% to 19.1% were prepared and some cylinder-shaped MgO-C samples were processed to fulfill slag sticking tests conducted at 1600°C in atmosphere furnace. The research results show that the amount of slag adhesion decreases with a reduction of SiO2 content and an increase of Al2O3 content in slag, owing to larger viscosity and higher foam index of molten slag. To control the variations of SiO2 and Al2O3 contents in converter slag is conducive to better slag splashing. Furthermore, the mechanism of SiO2 and Al2O3 contents of converter slag impacted on slag sticking to MgO-C brick has been further discussed.