Protective coatings for the carrier bars of pre-baked anodes and

Compositions: coating or plastic – Coating or plastic compositions – Corrosion inhibiting coating composition

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Details

252387, 204279, 204280, 204286, 204290R, 204294, C04B 902

Patent

active

049465023

ABSTRACT:
A coating composition is disclosed for protecting from corrosion and oxidation in the hot condition carrier bars of pre-baked anodes and the emergent carbonaceous part of the anodes for the protection of aluminum in the Hall-Heroult process. The composition consists essentially of dry matter formed by calcium alumnate cement having an alumina content of at least 70% and a low content of impurities, magnesium spinel, and optionally, further alumina, together with water in the amount of 10 to 80% by weight of the total dry matter.

REFERENCES:
patent: 4246035 (1981-01-01), Maczura et al.

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