Protection of carbon articles
AssigneeFoseco International Limited
InventorsJosef Schiffarth, Clive Graham Lorkin, Kenneth John Fletcher
Life of this patent
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Abstract
Carbon articles, particularly carbon electrodes, are protected against corrosive attack in use by fusing material to the article, or applying material to the carbon article which under the conditions of its use is capable of fusing to the carbon article, to form a coherent coating of protective material over only that part of the carbon article liable to corrosive attack when the article is in use.
Claims9
A method of protecting the sides of an arc furnace electrode against corrosive attack which comprises applying to the sides of the electrode preformed sheets of material which, on heating, will fuse to form a coherent coating of protective material on the surface of the electrode and thereafter heating the sides of the electrode to a temperature sufficient to fuse the preformed sheet material thereon.
A method of protecting the sides of an arc furnace carbon electrode against corrosive attack when subjected to elevated temperatures during use comprising applying to the sides of the electrode at least one preformed self-supporting sheet of a material which comprises an inorganic fusible matrix of graphite-wetting material and particles of a refractory filler and thereafter heating the sides of the electrode to a temperature sufficient to fuse the matrix into a continuous refractory-containing coating which firmly adheres to the sides of the electrode.
Dependencies are inferred from the claim text.