1/1/2012· Activated carbon has been used for recovering gold in the cyanidation process since the 1890s and CIP has become a popular process in the gold industry since 1980s . In treating coppergold ores, a high free cyanide concentration is commonly maintained to encourage the selective adsorption of gold over copper onto carbon.
© 2015 Elsevier B.V. Abstract In the cyanidation of copper gold ores, the presence of copper minerals can lead to soluble gold losses, the production of weak acid dissociable cyanide, as well as a number of operational challenges in CIP/CIL circuits with regard to competitive adsorption, and subsequent difficulties associated with elution, electrowinning and smelting.
2/1/2013· Cyanide is a lixiviant, or reagent that is used to leach, often in tanks, gold from a solid matrix and form a gold cyanide complex. The gold cyanide complex is then extracted from the pulp or slurry by adsorption onto activated carbon. CIL stands for carbon in leach. This is a gold extraction process called cyanidation where carbon is added to the leach tanks so that leaching and
During cyanidation of course i always maintain the correct pH level 10.5, and i also add cyanide, but my problem is its consume too much cyanide, since its a gold copper ore. I use activate carbon to recover the gold in cyanidation, and i can recover 6.5g of gold in my tailing...
Rinsing carbon in a cold caustic cyanide solution resulted in good elution of copper prior to the gold elution stage. The copper free loaded carbon was easily treated for gold with very high elution and electrowinning efficiencies of 96 and 98% respectively. A bullion of high fineness was obtained and the activity of carbon after elution was reasonably high at 8 0% of