Removable closure for an opening in an aluminum refining pot

Details Removable closure for an opening in an aluminum refining pot Removable closure for an opening in an aluminum refining pot

1996-03-18

1997-09-16

Valentine, Donald R.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204279, 1603491, 160350, C25C 308, C25C 700, A47H 100, A47H 700

Patent

active

056676484

ABSTRACT:
A closure is made of a flexible fabric material designed to withstand a temperature in the range of 1800.degree. F. as is present within a pot employed to conduct the Hall-Heroult process for deriving aluminum from alumina. The closure, in a preferred embodiment, includes an elongated hook allowing it to be hung over the opening of the pot and also includes a gripping handle allowing the closure to be manipulated. A peripheral bulbous seal enhances the sealing effect about the opening in the pot.

REFERENCES:
patent: 2608250 (1952-08-01), Meyer
patent: 3808610 (1974-05-01), Mortensen
patent: 4002551 (1977-01-01), DuClaux et al.
patent: 4136003 (1979-01-01), Arnason et al.
patent: 4874028 (1989-10-01), Lynch et al.
patent: 5128012 (1992-07-01), Olsen

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