Process for the treatment of molten metal.

摘要

The invention relates to an apparatus for the treatment of molten metal with a reactive additive.

The apparatus comprises (1, 2) a pouring cup (4) having an outlet for introduction of both reactive additive and molten metal into a reaction chamber (7). The reaction chamber communicates via a channel (12), preferably of restricted cross-sectional area, with an expansion chamber (15) provided with an outlet (16) for the molten metal. The expansion chamber outlet has a smaller cross-sectional area than the pouring cup outlet (6) thereby ensuring that the reaction chamber is sufficiently filled to cover any reactive additive during a pouring treatment. The apparatus permits a series of pourings to be effected without disas- sembley of the apparatus to introduce more reactive additive.