The kinds and distributions of inclusions in the surface of different types of JG4246 A revers before and after cleaning treatment were systematically analyzed. The results indicate that the Al

2

O

3

inclusions forming after the reaction with the shell are mainly on the surface of the revert before cleaning treatment

accounting for about 24%～25% of the area fraction. At the same time

there are a small amount of HfO

2

Ti-rich inclusions and Zr-and Hf-rich inclusions

while there are still a certain amount of Al

2

O

3

inclusions

a small amount of Hf-rich inclusions and Zr-and Si-rich inclusions on the surface of the revert after cleaning treatment. After 100% cleaning treatment reverts were melted

and the molten steel with a lot of scum could not meet the demand for reuse of the reverts. It is necessary to further improve the cleanliness of the revert master alloy.