Method and composition for foaming slag in electric arc furnace
OwnerJohn W. Schwerinventor
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Abstract
A slag-foaming composition and process for use in electric arc furnace steelmaking. The compositions comprise from about 15 to 80 wt % of a carbon source, the remainder consisting substantially of a source of an oxide of calcium; alternatively, the compositions comprise from about 15 to 30 wt % of a carbon source, the remainder consisting substantially of dolomite lime. The process consists of the addition, in the course of steelmaking using an electric arc furnace, of the steelmaking additive compositions of the invention to the charge subsequent to the initial scrap steel melt down.
Claims10
A slag-foamimg composition for use in electric arc furnace steelmaking comprising from about 15 to about 80 wt% of a carbon source, the remainder consisting substantially of a source of an oxide of calcium.
A method of forming foam in the slag produced during electric arc furnace steelmaking comprising the addition to said slag of an effective amount of a composition comprising from about 15 to about 80 wt% of a carbon source, the remainder consisting substantially of a source of an oxide of calcium.
Dependencies are inferred from the claim text.