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US 11,653,426 B2Granted
Methods of protecting furnace electrodes with cooling liquid that contains an additive
AssigneeChemtreat, Inc.
InventorsJoseph S. Strasser, Joseph M. Hamnik, James R. Lawson, Alan J. Feller
Life of this patent
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Abstract
A method for forming a protective antioxidative barrier on the furnace electrodes using a chemically altered cooling liquid containing an antioxidant additive. This method can be applied to electrodes used in electric arc furnaces and ladle metallurgy furnaces. The method can involve spraying the cooling liquid onto the electrode, thereby forming the protective antioxidative barrier and reducing the oxidation of the electrode.
Claims31
A method for protecting a furnace electrode comprising:
- (i) combining at least one antioxidant additive with electrode cooling water to form a chemically modified cooling liquid;
- (ii) while a portion of the furnace electrode is positioned inside a furnace and another portion of the furnace electrode is positioned above the furnace;
- and while electrical power is delivered to raw materials through the furnace electrode to melt the raw materials, spraying a surface of the furnace electrode above the furnace with the chemically modified cooling liquid,
- (iii) while the electrical power is delivered to the raw materials through the furnace electrode and while the furnace electrode is being sprayed with the chemically modified cooling liquid, forming a coating on the furnace electrode, the coating comprising the at least one antioxidant additive, which is applied to the surface of the furnace electrode as the water evaporates from the chemically modified cooling liquid that has been sprayed on the surface of the furnace electrode while electrical power is delivered to the raw materials through the furnace electrode to melt the raw materials;
- and
- (iv) moving the furnace electrode further into the furnace such that at least a portion of the coating formed on the surface of the furnace electrode moves into the furnace.
3 more elements
A method for protecting a furnace electrode comprising:
- (i) providing a multifunctional cooling liquid that includes cooling water for the furnace electrode that has been chemically modified with at least one additive;
- (ii) while a portion of the furnace electrode is positioned inside a furnace and another portion of the furnace electrode is positioned above the furnace and while electrical power is delivered to raw materials through the furnace electrode to melt the raw materials, spraying a surface of the furnace electrode that is positioned above the furnace with the multifunctional cooling liquid;
- and
- (iii) causing a coating to form on the furnace electrode above the furnace from the multifunctional cooling liquid,
- wherein the coating is effective to reduce sidewall oxidation of the furnace electrode.
2 more elements
Dependencies are inferred from the claim text.