Refractory valve unit for controlling the discharge of molten me

Details Refractory valve unit for controlling the discharge of molten me Refractory valve unit for controlling the discharge of molten me

1990-11-01

1992-01-07

Kastler, S.

Dispensing

Molten metal dispensing

Flow controllers or assists

222591, B22D 4114

Patent

active

050783068

ABSTRACT:
A unit for controlling the discharge of molten metal from a metallurgical vessel includes a valve having a refractory stator fixed to refractory material of the unit constituting lining of the vessel and a refractory rotor disposed in the stator and movable relative to the stator between open and closed positions of the valve. The stator and the rotor have flow control passageways extending therein which can place the interior of the metallurgical vessel in communication with a discharge opening of the valve. A seal is established between the stator and the rotor over a portion thereof that surrounds the flow control passageways such that molten metal may not pass from the flow control passageways into an area between the stator and the rotor. Furthermore, a gap extends over the entire thickness of the refractory material between the stator and the rotor for accommodating for differences in the thermal expansion of the stator and the rotor during the discharging of molten metal through the valve to prevent the valve from jamming during the use thereof.

REFERENCES:
patent: 1742065 (1929-12-01), Eiser
patent: 3344965 (1967-10-01), Kerin
patent: 4840295 (1989-06-01), Hartley
patent: 4913324 (1990-04-01), Luhrsen et al.
patent: 4949886 (1990-08-01), Luhrsen et al.

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