Plug to seal recesses for anode rods in anode blocks during calc

Details Plug to seal recesses for anode rods in anode blocks during calc Plug to seal recesses for anode rods in anode blocks during calc

1990-12-27

1992-09-08

Valentine, Donald R.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204294, 220307, 220352, 220DIG19, C25C 312, C25C 700, B65D 3900, B65D 4304

Patent

active

051455706

ABSTRACT:
The subject invention is a plug for sealing recesses in anode blocks designed to hold anode rods, wherein the anode blocks are intended for the electrolytic extraction of base metals during their calcination treatment. The proposed plug is characterized by the fact that it is die-formed and composed of a material containing cellulose. This provides a very close seal in the anode recess, such that coke granules, which are inserted as fill material to displace oxygen in gaps between several anode blocks within a calcining furnace, cannot enter the anode recesses. Undesirable conglutination inside the anode recesses and burning of the material defining the anode recesses, caused by the unavoidable presence of some oxygen residue during the calcination process, can no longer occur. Because of the great solidity of the plug, deformations of the recesses in the lower rows of anode blocks in the calcining furnace are prevented. At the conclusion of the calcination process, after the anode recesses are precipitation-hardened, the cellulose containing plugs are carbonized, whereby the coal or ashes remaining in the recesses can be removed by vacuuming, without any difficulty in a subsquent operation.

REFERENCES:
patent: 1534316 (1925-04-01), Hoopes et al.
patent: 1914409 (1933-06-01), Draper
patent: 3578200 (1971-05-01), Hetzer
patent: 3672973 (1972-06-01), de Nora et al.
patent: 4552343 (1985-11-01), Labate et al.

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