| 摘要 |
In a process for producing a metal melt, in particular, a steel melt, in an electric arc furnace, the bath surface is covered by a foamed slag during the flat bath period(s). In order to ensure the advantages of an electric arc enveloped by foamed slag over an extended period of time at expenditures as low as possible, level measuring of the layer height of a slag is carried out several times during a furnace heat. Foamed slagenveloping an electric arc generated by at least one electrode is formed by blowing solids, gases or a mixture of solids and gases into or onto the slag or the metal melt. The layer height of the foamed slag is dimensioned such that the foamed slag at least extends over all of the electric arc, a number of advantages, thus, being, utilized to the optimum degree.
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