Selective recovery of manganese, lead and zinc
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United States of America Patent
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Feb 2, 2016
Grant Date -
Aug 15, 2013
app pub date -
Mar 14, 2013
filing date -
Sep 11, 2009
priority date (Note) -
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Abstract
This invention relates to a method for the selective recovery of manganese and zinc from brines that includes the steps of contacting a brine with an ionic liquid in order to selectively extract manganese and zinc from the brine into the ionic liquid; and treating the ionic liquid containing extracted manganese and zinc with an aqueous solution to selectively precipitate manganese, producing a manganese depleted, zinc rich ionic liquid. The method can further include the steps of treating the manganese depleted, zinc rich ionic liquid with an aqueous solution to selectively precipitate zinc.
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