Definition of "cyanidation" []

• The extraction of gold or silver from their ores using the cyanide process (noun)

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• "In 1863 Debus transformed hydrocyanic acid into methylamine with platinum black; however, this reaction is fugitive and soon ceases because cyanidation of the metal rapidly destroys its capacity to induce the reaction."
• "A gold ore may contain copper or arsenic, so as to debar cyanidation, where this process is the only hope of sufficiently moderate costs."
• "Secon, the expanded cyanidation circuit is anticipated to reach 800 tpd, up from the current 425 tpd, within the first quarter of 2012."