Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Rong Yu Wan0
K. Marc LeVier0
Date of Patent
May 26, 2009
Patent Application Number
11866890
Date Filed
October 3, 2007
Patent Primary Examiner
Patent abstract
A heap with precious metal-containing mineral material with precious metal locked within sulfide mineralization is subjected to bio-oxidation followed by acidic thiocyanate leaching to dissolve precious metal. Sulfide sulfur is oxidized during both of the bio-oxidation and the thiocyanate leaching.
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