As is commonin many gold processing operations, cyanide is used to leach gold from the ore at Akbakai mine facilities. Prior to implementation of this EcoLinks funded project, about 20-30% more cyanide was being used at Akbakai mine facilities as compared to similarprocessing facilities world-wide. Furthermore, gold extraction resulting from cyanide leaching at Akbakai was about 15% lower than at other facilities.
Capitalcosts for construction of a cyanide recovery plant at Akbakai are estimated at $200,000. Cash flow costs for this plant show a positive income of approximately $60,000 annually (avoided cyanide purchase costs). Thus, the simple pay back period of a cyanide recovery plant is about 3.3 years.