Industrial experimental research on heap leaching of low-grade refractory gold ore bearing high sulfide and carbon without cyanide

The Micro-fine grained gold ore is low-grade refractory gold ore bearing high sulfide, carbon, clay and arsenic in Nibao, Guizhou. A new environmentally friendly reagent to gold leaching is employed, and the effect of which is equal to those industrial experiments with cyanide. The application and promotion of this technology provides some guidance to the cyanide-free gold heap leaching.