A slag control shape is releasably mounted on a mounted member carried on a molten vessel or an adjacent base. The mounted member includes an L-shaped bracket carrying a movable member to release the slag control shape and an actuator for selectively releasing the slag control shape. The mounting member further includes a sleeve secured to the vessel or adjacent base. A rotating shaft is connectable to both the L-shaped bracket and sleeve to provide rotatable movement in selective positions, of the L-shaped bracket relative to the sleeve.