Abstract:

While maintaining the original process and equipment on the same conditions in a dressing plant，the cyanide-adsorption test researching of the copper flotation tailings was conducted.The equilibrium adsorption isotherm was plotted and the theoretical base carbon content was calculated by using the result of the standard carbon leaching test which in the different condition of the carbon density.Meanwhile，through the carbon leaching-adsorption test，it was simulated for the impact on gold，copper leaching and adsorption of the different copper concentrations in the solution as the different return water mode.The results show that gold adsorption results can be obtained by the activated carbon adsorption，even though not excluding the copper from the poor liquid adsorption as long as the content of copper in solution is not too high，and the free CN- maintain adequate.The process was proposed which removed copper firstly and then conducted desorption and electrowinning for the gold loaded carbon with high copper content.This finding provides an experimental basis for industrial applications.

Key words: copper gold mine, flotation tailings, cyanide adsorption