Process for Heap Leaching of Nickeliferous Oxidic Ores
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United States of America Patent
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app pub date -
Nov 1, 2007
filing date -
May 13, 2005
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Abstract
A process for the recovery of nickel and cobalt from a nickeliferous oxidic ore by heap leaching, the process including the steps of a) forming the nickeliferous oxidic ore into one or more heaps; b) leaching the ore heap with a leach solution in a leach step wherein the leach solution includes an acid supplemented hypersaline water as the lixiviant, the hypersaline water having a total dissolved solids concentration greater than 30 g/l; and c) recovering the nickel and cobalt from the resultant heap leachate.
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