AN APPARATUS AND A METHOD FOR TAPPING METAL

摘要

An apparatus and a method for tapping molten metal from below a molten el ectrolyte layer less dense than the metal is described. The apparatus compri ses a pipe comprising a protruding enlarged wall portion at an operative end which is immersed in the molten electrolyte and metal during tapping operat ion. The enlarged wall portion helps to minimize entrainment of electrolyte residue from the electrolyte/metal interface during tapping. The orientation of the enlarged wall portion may be in the general direction of the crucibl e.