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Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
November 24, 2015
Patent Application Number
14061354
Date Filed
October 23, 2013
Patent Primary Examiner
Patent abstract
A method to recover gold lost in roaster calcine-leach tailings, due to the formation of cyanide refractory compounds or morphologies during the roasting process. The process can include acid leaching of magnetic concentrate from roaster leach tailings, combining the acid leach slurry to the pre-acidulation tank for pressure oxidation feed, acid pressure oxidation of the pressure oxidation feed, and recovery of gold.
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