黄金冶炼氰渣火法处理研究现状及展望

焙烧氰化尾渣是含金硫化矿氰化法提金产生的固废,占氰渣总量的50%以上。其中的金被铁矿石和脉石包裹,采用火法回收工艺才可有效回收金和铁。目前的火法回收工艺有氯化挥发焙烧法回收金银、还原焙烧—磁选法回收铁、氰渣-铜精矿协同冶炼同时回收金和铁。氰渣-铜精矿协同冶炼法具有高效性、经济性和环保性,前景更加广阔。

Research Status and Prospect of Pyrometallurgical Treatment of Cyanide Residue from Gold Smelting

Calcined cyaniding tailings are solid wastes produced by cyaniding of gold bearing sulfide ore, accounting for more than 50% of total cyanide slag. Gold is wrapped by iron ore and vein stone, which can be recovered effectively only by pyrometallurgical process. Current pyrometallurgical processes include gold and silver recovery by chlorination volatilization roasting, iron recovery by reduction roasting and magnetic separation, and gold and iron recovery by cyanide slag-copper concentrate combined smelting. The cooperative cyanide residue - copper concentrate smelting method has the advantages of high efficiency, economy and environmental protection, and has a broad prospect.