| 摘要 |
A DC arc furnace has a hearth formed with an extension in which a melt-contact electrode is positioned, and has an arcing electrode laterally spaced from this contact electrode. This results in the formation of an arc that is oblique in a direction facing away from the contact electrode. To prevent the arc from being excessively destructive with respect to the furnace vessel's side wall toward which the arc was directed, furnace charging material, in particulate form, is continuously fed to a melt in the furnace, as a flow directed into the arc foot spot formed by the oblique arc, resulting in a maximum efficiency of energy absorption of the normally cold charging material and at the same time, via the charged material, shading the lining of the furnace vessel from an attack by the arc. |
