Patent ID: 8337746

Claim:
A system for transferring molten metal out of a vessel, the system comprising: (a) a vessel; (b) a dividing wall in the vessel for dividing the vessel into a first chamber and a second chamber, the dividing wall having an opening and a height H 1 ; and (c) a molten metal pump in the first chamber that has a pump base fully submerged in molten metal in the first chamber, and support posts connecting the pump base to a superstructure that supports a motor, the pump base having a top and a bottom, an inlet at the top, the inlet leading to a pump chamber, and a rotor positioned in the pump chamber, the rotor including a flow-blocking and bearing plate at the bottom surface of the pump chamber, wherein molten metal enters the pump chamber through the inlet at the top surface and is moved out of the pump chamber by the movement of the rotor to create a stream of molten metal through the opening in the dividing wall, and from the first chamber into the second chamber, wherein part of the second chamber has a height H 2 , and wherein H 2 is less than H 1 ; wherein when the pump is activated molten metal is pumped from the first chamber through the opening in the dividing wall into the second chamber until the level of molten metal in the second chamber exceeds H 2 and moves out of the second chamber.