(440d) Effect of Glycine Pre-Leaching of Copper- Gold Bearing Low Grade Ore Prior to Cyanidation

The aim of this work was to explore the opportunities of increasing the gold recovery and reducing the cyanide consumption in the leaching of a copper gold ore. The effects of glycine in recovering copper prior to cyanidation from local mine ore was investigated. Several test works were carried out to come up with the optimum parameters for excellent copper and gold dissolution. Direct cyanide and ammonia assisted leaching of the ore were also carried out as to evaluate the responsiveness of the ore to the reagents. The data reveals that glycine pre-leaching of copper can be done to treat the low grade ore Cu-Au and still save in terms of reagent costs whilst optimizing recovery of gold and copper metals.