Magnesium Refining: A Fluxless Alternative

Paper #:
  • 920071

Published:
  • 1992-02-01
Citation:
Housh, S. and Petrovich, V., "Magnesium Refining: A Fluxless Alternative," SAE Technical Paper 920071, 1992, https://doi.org/10.4271/920071.
Pages:
9
Abstract:
A method for refining magnesium scrap which produces consistent, high quality magnesium metal has been developed. High quality magnesium metal is defined in this paper as metal which has heavy metal contaminants controlled within high-purity ASTM chemical specification, and is relatively free of internal impurities such as non-metallic inclusions (oxides and flux) and dissolved gas. The refining process utilizes a protective gas atmosphere, inert gas sparging and filtration techniques, rather than salt based fluxes, to remove both non-metallic inclusions and dissolved gases. Experimentation results of this refining process indicate magnesium scrap can be remelted and refined to a quality equal to or better than virgin ingot, without the introduction of salt based fluxes or a large capital investment.
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