Method of precipitation of pure aluminiumchloride from solutions which contain ions of aluminium and magnesium
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United States of America Patent
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Oct 27, 1981
Grant Date -
N/A
app pub date -
Feb 4, 1980
filing date -
Feb 13, 1979
priority date (Note) -
Expired
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Abstract
Method of producing aluminiumchloride with a low content of magnesium from hydrochloric acid solutions which contain ions of aluminium and magnesium and from which the aluminiumchloride is precipitated by hydrochloric gas and where the precipitation is carried out continuously in cascade so that the major part of the aluminium will be precipitated from solutions in which the ratio between aluminium and magnesium calculated as g Al.sup.+3 /g Mg.sup.+2 is above 0,5. Produced aluminiumchloride may be transformed to aluminiumoxide by calcination.
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