Abstract: The apparatus includes a furnace having a furnace chamber (14), a port (16) in fluid communication with the furnace chamber having an inclined lower wall (18), and a bi-directional induction unit (24) mounted to the inclined lower wall for inducing flow in molten material in the port. A retractable channel plate assembly (26) is selectively positionable in the port to define an extraction flow channel (28) for the molten material between the channel plate assembly and the inclined lower wall. A drive arrangement (64) moves the channel plate assembly into and out of the port and the control of a control system (74) which includes a sensor system (78) for measuring the level of the molten material in the port and a feedback system for providing information regarding the position of the channel plate assembly. A method of operating the apparatus is also disclosed.

Abstract: Apparatus for inducing flow in a molten material comprises a refractory lined vessel (10) for containing a molten material with an aperture (35, FIG. 3) in the refractory lining. A mounting plate (40, FIG. 4) of non-magnetic material is removably mounted to the vessel over the aperture and an electromagnetic induction unit (14) is mounted adjacent an exterior face of the mounting plate. A cooling system is provided for cooling the mounting plate. The mounting plate may have vanes (72, FIG. 6) on an outer surface to define cooling channels (74, FIG. 6) through which a cooling fluid can flow. The vanes may follow a non-linear path and the cooling fluid may be air.

Abstract: Apparatus for inducing flow in a molten material comprises a refractory lined vessel (10) for containing a molten material with an aperture (35, FIG. 3) in the refractory lining. A mounting plate (40, FIG. 4) of non-magnetic material is removably mounted to the vessel over the aperture and an electromagnetic induction unit (14) is mounted adjacent an exterior face of the mounting plate. A cooling system is provided for cooling the mounting plate. The mounting plate may have vanes (72, FIG. 6) on an outer surface to define cooling channels (74, FIG. 6) through which a cooling fluid can flow. The vanes may follow a non-linear path and the cooling fluid may be air.