Use of a binary salt flux of NaCl and MgCl₂ for the purification of aluminium or aluminium alloys, and method thereof

摘要

A method for the purification of a metal selected from the group consisting of aluminum and aluminum alloys, wherein the metal is in a liquid phase and is contacted with a salt flux consisting of a binary mixture of NaCl and MgCl₂. Preferably, more than 22% by weight of the binary mixture consists of NaCl.