Augustin, C.O. and Dandapani, K.S. and Srinivasan, K.S.
(1986)
Removal of magnesium from aluminium scrap and aluminium-magnesium alloys.
Bulletin of Electrochemistry , 2 (6).
pp. 619-620.
ISSN 0256-1654
Abstract
Most of the commercial grade aluminium and aluminium alloys containing varying percentages of
magnesium (0.5 - 5.0%) are cheap raw materials for superpure aluminium by electrorefining. Since
the presence of magnesium will consume the electrolyte of the refining bath and because of the possibility
of magnesium depositing in the pure aluminium cathode, prior removal of magnesium is a necessity.
Removal of magnesium by air-oxidation, chlorination, chemical treatment and electrolysis have been
reported. A suitable fluoride based flux has been formulated and the results of the efficiency of
magnesium removal has been discussed and compared with the other results.
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