Abstract: Process for the continuous forming of a metal tube filled with powdered elements, such as ferroalloys and other materials, utilizable in the treatment of liquid metals in ladle at same time of its forming, consisting in making advance a metal sheet (2) unrolling from a roll (1), in sending it into a filling matrix or chamber (5), then in depositing on the same sheet a metered and weighted amount of processing powders fed from separate hoppers, in subsequently bending said loaded sheet so as to let it assume a substantially U-shaped channel shape, and in making it then assume the shape of a closed tube with compacted powder inside it, due to partial overlapping of the side flanges of U-shaped channel and, finally, in dipping the so-formed tube into a ladle (16).

Abstract: Self-baking electrode for electric arc furnaces, particularly suited to the production of metal silicon, ferro-alloys and the like, including a containing metal casing (1), an electrodic carbonaceous mass (4,7) and a supporting structure (8) for said electrodic mass, said supporting structure being manufactured from carbon fibres and/or composite materials based on carbon fibres, which permits to obtain products, in particular metal silicon, having a high titer and a low impurity content. Said electrode is also endowed with improved mechanical characteristics.