Selectively leaching cobalt from lateritic ores
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United States of America Patent
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Aug 2, 2011
Grant Date -
Nov 25, 2010
app pub date -
Dec 24, 2008
filing date -
Dec 24, 2007
priority date (Note) -
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Abstract
A heap leach process for the recovery of nickel and cobalt from a lateritic ore, said process including the steps of leaching and/or agglomerating the ore with a lixiviant that includes ferrous ions, wherein the lixiviant is able to liberate cobalt from the cobalt containing minerals within the ore in preference to nickel, to produce a cobalt rich pregnant leach solution relatively free of nickel.
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