The environmental-friendly gold leaching reagent has a series of advantages including low toxicity, simple use, and high gold leaching rate when replacing sodium cyanide under conventional alkaline conditions. A certain mining company uses sodium cyanide as gold reagent in its heap leaching plant. In order to verify the feasibility of using environmental-friendly gold leaching reagent to replace sodium cyanide in heap leaching process, the company conducted a heap leaching industrial production test.
With the development of beneficiation technology, the definition of refractory gold ore is changing. Generally speaking, refractory gold ore in leaching field is a kind of ore whose leaching rate of gold is less than 80% when directly processed by cyanidation after find grinding.
All sliming gold cyanidation refers to the process of crushing and grinding all the gold ore into slurry, adding cyanide to leaching it, and then using activated carbon to directly adsorb the dissolved gold-laden carbon from the pulp to complete the gold extraction process.