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Un procedimiento para reducir y fundir minerales en estufas u hornos de fundir eléctricos con galería superpuesta, recorrida por los gases calientes escapados de la citada estufa u horno de fundir.
El procedimiento industrial para elaborar, con intervención del horno eléctrico, las aleaciones metálicas denominadas silicospiegel, silico-manganeso o ferro-silico-manganeso.
El procedimiento industrial para elaborar, por mediación del horno eléctrico, ciertas aleaciones metálicas utilizadas en la fabricación de aceros especiales.