Removal of base metals and cyanide from gold-barren CIP solutions
AssigneeOrtech Corporation
InventorVaikuntam I. Lakshmanan
Life of this patent
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Abstract
Processes are provided for substantially removing base metals and/or cyanide from gold-barren solutions resulting from gold ore processing.
Claims5
A process for substantially removing base metals from gold-barren cyanide leachate comprising contacting said leachate with a strong base anion exchange resin conditioned by treatment with a solution with a cyanide salt for a sufficient time to remove said base metals followed by separation of said leachate from said resin.
A process for substantially removing at least one selected base metal from gold-barren cyanide leachate comprising contacting said leachate with a strong base anion exchange resin conditioned by treating it with a solution of a metal cyano complex of greater anionic volume than the cyano complex of said selected base metal for a sufficient time to remove said selected base metal followed by separation of said leachate from said resin.
Dependencies are inferred from the claim text.