The extraction of gold or silver from their ores using the cyanide process(noun)
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Use "cyanidation" in a sentence
"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."