Chemical property of gold is very stable , but it has a character , when it is in the editpotassium cyanide solution , and filling the air , gold will become soluble cyaniding liquid 。 The gold cyanide is a process that extracting gold from cyaniding solution . This is the mainly process for extracting gold from raw ore .
process gold mine in flotation process or mercury amalgam ， tailings in gravity process , process oxide mineral with pulp and gold extraction plant with cyaniding agitation .
Application of Gold Cyanide Leaching process
Cyanide leaching can be applied in several forms: agitated leaching, percolation leaching. Percolation leaching divides into tank leaching , heap leaching and leaching on-site . Agitated leaching divides into cyanide-zinc cementation process and cyanide-carbon absorption process , cyanide- carbon absorption divides into CIP (Carbon in-pulp) and CIL ( Carbon in leaching ) . CIL is a process leaching and absorption by activated carbon at the same time , CIP is a process that separate the absorption and leaching . CIL is more effective than CIP , so it is widely used in gold cyanide leaching process .
The difference between zinc cementation and carbon absorption :
1. In zinc cementation process , silver has less effect to the gold leaching ;
2. In zinc cementation process , the process of washing the gold solution is very complex and cost much , it has a bad influence in high quantity clay-mineral treatment . But carbon absorption doesn`t have these influence .
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