Process for atmospheric leaching of laterite ores using hypersaline leach solution
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United States of America Patent
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Sep 18, 2012
Grant Date -
Mar 10, 2011
app pub date -
Mar 19, 2009
filing date -
Mar 19, 2008
priority date (Note) -
Expired
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Abstract
An atmospheric leaching process for the recovery of a nickel and cobalt from a lateritic ore includes (a) preparing a slurry of the lateritic ore with saline or hypersaline water having a total dissolved solids (TDS) content greater than 30 g/L; (b) leaching the slurry of the lateritic ore with sulfuric acid at atmospheric pressure, and (c) recovering nickel and cobalt from the resultant leachate.
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