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cyanidation of a pyrrhotite bearing gold ore

Diagnostic Leaching for Refractory Gold Ores Stage 2: Leach residue is reacted with hydrochloric acid to dissolve labile sulfide minerals such as pyrrhotite and liberate any gold that may be associated with them. The residue is then subjected to cyanidation and a sample of . jaw crusher gold cyanide Cyanidation of a pyrrhotite-bearing gold ore. Cyanidation of a pyrrhotite-bearing gold ore, that gold cyanide is reduced on the surface, ... What is the role of cyanide in mining | MiningFacts.org Cyanide is a naturally occurring chemical that is found in low concentrations throughout nature including in fruits, nuts, plants, and insects. It has been used by the mining industry to separate gold and silver particles from ore for over 120 years. With proper management, cyanide can be used safely and without harming the environment despite its toxicity.    Read More

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