Liquid steel bath reheating method
AssigneeCockerill Sambre
InventorJacques Defays
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Abstract
A method for metallothermally reheating a liquid steel bath in a metallurgical container into which a metal fuel is placed and oxidizing and agitating gases are injected under its surface. A controllable flow resulting from the injection of agitating gas is generated in the bath by means of a device which is separate from the oxidizing gas injection device, and the metal fuel is inserted into said flow so that it comes into contact with said oxidizing gas.
Claims12
In a method for metallothermically reheating a liquid steel bath (11) contained in a metallurgical vessel (1) and having a scoria zone at its surface, comprising the steps of introducing into the bath a metallic fuel and injecting below the surface of the bath an oxidizing gas and a stirring gas, wherein a current resulting from the injection of a stirring gas is created in the bath (11), via a means (9) separate from means (15) for injecting the oxidizing gas and wherein the metallic fuel (13) is introduced into the current, so that it is brought into contact with the oxidizing gas, the combination wherein the axes of injection of the oxidizing gas and of the stirring gas are out of alignment with respect to each other, and the injection of the stirring gas generates an ascending current in the liquid steel bath, this current becoming descending at the location of injection of the oxidizing gas.
Dependencies are inferred from the claim text.