| Thiocyanate leaching is a technology with efficient, stable and environmental friendly advantages. The working principles of thiocyanate leaching of gold were introduced, the reaction and feasibility of leaching process were expounded from the electrochemical point of view. The effects of pretreatment methods, such as roasting oxidation, pressure oxidation and chemical oxidation, were summarized. And also, the effects of leaching parameters, such as leaching agent, oxidant, pH, impurity ion and thiourea were summarized. And it was surveyed that the methods for recovering gold from leach liquor. In this paper, the research and development of leaching gold system was summarized in angles of application, technology and mechanism. The problems and deficiencies were put forward, and the research direction was pointed out. |
