A method for PURIFYING a Molten Mass com - Light Metal aluminum or other metal contaminated with Cerium Rare Earth

摘要

Purification of a fusion of Aluminum contaminated by Metals of the group of rare Earths. It consists of putting in contact with the Molten Metal halogenation Agent that can be AlF3 or Cl2, AlCl3, to convert the metal of the Rare Earth Halide and separate this Molten Metal. The Molten Metal can contain between 0.1% and 4% of EC and the Reaction is carried out with agitation.If we use it AlF3 is used in an amount of 95 - 140% of the Stoichiometric amount required by the EC. When Chlorine is used, a seething Mixture with Inert Gas for the Molten Metal. You can also use first and then AlF3 gaseous chlorine.