| 摘要 |
<p>A process is disclosed for the recovery of gold and/or silver values fr om activated carbon, wherein they are adsorbed as cyanide complexes. The proces s uses an eluant containing sugar. The process allows the eluant to pass throu gh fresh carbon twice, thereby reducing the volume of the gold-loaded eluant. This, in turn, reduces the size of the electrowinning or zinc precipitation circuits. The process also improves elution efficiency when barren electrowinning solution is recycled in the elution process.</p> |
