New Gold Extraction Technique Developed
Posted by keelynet on August 15, 2009
This might be useful for anyone processing tailings or trying to recover gold.
“Russian scientists suggest a new technology for extracting gold and silver from complex solutions. Chemists finally found a less toxic alternative for cyanide, a reagent, widely used in gold extraction from ores and recyclable materials. New reagent, thiocyanate, works almost the same way as cyanide – it forms complexes with gold or silver. These complexes can be isolated via ion-exchange resins – they replace chlorine ions in an ion-exchange column. Then metal complexes are eluted from the column, and desired metals are extracted by means of electrolysis, for instance.” – Source
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