| 摘要 |
Reducing the level of base metal species during the cyanide extraction of gold and silver from their ores by treating an aqueous slurry of the ores with a water-soluble sequestering agent for the base metal species for a time sufficient to reduce the level of the base metal species in the ore slurry. The sequestering agent preferably comprises at least one member of the group consisting of ethylenediamine disuccinic acid and hydroxyethylidene diphosphonic acid. The method reduces the consumption or cyanide and the level of carbon fouling during cyanide extraction of gold and silver according to a carbon-in-pulp (cip) process. |
