AARL Carbon Stripping System Operation: Elution ...
During this stage a 2% caustic/3% cyanide solution mixture is recirculated through the loaded carbon in the elution column until such time as a predetermined "top of column" temperature is reached. By this time most of the gold and silver on the carbon will have been desorbed into solution and both the carbon and the solution will have reached an optimum temperature for the subsequent ...