Extending the Service Life of The Electric ARC Furnace Lining
Abstract
MgO – based refractory coatings for electric arc furnaces are widely used all over the world. In order to increase the service life of refractory materials, it is necessary to constantly correct the parameters of knowing the mechanisms of the causes of corrosion. The aging process can change significantly with changes in technology. To increase the fire resistance of the lining with the help of slag, it is possible to use double – saturated slag with CaO and MgO, MgO briquettes or refractory waste, dolomite lime. Slag foaming is very effective against corrosion. An important aspect is the regulation of the FeO content of the slag.
This research is aimed at analyzing the effect of slag and metal composition in electric arc furnace, and factory data was statistically evaluated according to the degree of corrosion of refractory lining. The degree of corrosion of the lining in an electric arc furnace under the influence of special slag (basic CaO, MgO, FeO, Al2O3, SiO2) and metal components (C, Mn) were analyzed at the factory. In these factories, together with the corrosion data, the values of the slag composition were represented by a diagram in relation to the oxidation potential between basic, acidic and oxides.
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