Cyanide is firmly established in the gold mining industry as the overwhelming choice of solvent for gold and silver recovery from ores. Several niche applications for alternative reagents have been proposed, but it’s unlikely the superiority of cyanide will be seriously challenged for some time.
The reason alternative solvents are widely sought is due mainly to the negative connotations of cyanide in the public arena; and its poor reputation has been further harmed by several catastrophic tailings dam failures in recent years.
The following paper describes the ReCYN™ Process from PT Green Gold Engineering, which can help change the negative perception of cyanide in gold plant processing while substantially improving the economics of its use.
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