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摘要:
目前难处理金矿最常用的提金方法为氰化浸金，其浸出效率高、成本低；但氰化物具有剧毒性，严重影响环境、危及人体健康，且需要对废水进行无氰化处理。为此，选矿工作者进行了大量的非氰浸金工艺研究，非氰浸金具有低毒、环保等优点，已成为难处理金矿石开发利用的研究热点。对此，详细综述了硫代硫酸盐法、氨基酸法、硫氰酸盐法、石硫合剂法、硫脲法、卤素浸金法、生物浸金法、多硫化物法等非氰化浸金法的基本原理及研究进展，分析了其存在的优点与缺点，并对非氰浸金技术的发展方向进行了展望。
Abstract:Cyanide leaching is currently the most commonly used method for extracting gold from difficult−to−treat ore, due to its high leaching efficiency and low cost. However, the use of cyanide is associated with significant environmental and human health risks due to its high toxicity, and further treatment of waste water. As a result, there has been a significant amount of research into non−cyanide leaching processes. Non−cyanide leaching of gold is a low−toxicity process that offers numerous environmental and other benefits. It has become an important area of research in the development and exploitation of gold ore. In this regard, the principle and research progress of eight non−cyanide leaching methods are reviewed, such as the thiosulfate method, the amino acid method, the thiocyanate method, the rock sulfide synthesis method, the thiourea method, the halogen leaching method, the bioleaching method, and the polysulfide method, and their advantages and disadvantages are summarized. Finally, The development direction of non−cyanide gold leaching technology is also prospected.
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