非氰浸金技术的研究及应用现状

Research and Application Status of Non-cyanide Gold Leaching Technology

由于氰化物具有剧毒性,故采用氰化法处理含金矿石时,对环境的污染比较严重。同时,对于复杂金矿石的氰化浸金效果差的问题,许多学者试图研究更理想且能够替代氰化提金的非氰浸出剂。非氰浸金法具有无毒性或毒性比氰化物小、浸出速度快和对某些杂质的适应性强等优点,使得该方法备受青睐。阐述了非氰浸金技术的研究进展及其应用现状,重点分析了硫脲法、硫代硫酸盐法、多硫化物和石硫合剂法、卤素及其化合物法,以及各方法的浸金工艺和优缺点,提倡开发更有效的无毒非氰浸金工艺,实现高效、环保且适合工业生产的目的。

Because cyanide is poisonous,it can pollute environment by using cyanidation to deal with gold ore. Meanwhile,with the problem of poor effective in the leaching of complex gold,many scholars try to find better method to instead cyanide.The advantages of non-cyanidation gold leaching technology are non-toxic, fast leaching speed and strong adaptability for impurity,it is subjected to favour.We review the research advance and application status of non-cyanide gold leaching technology.The thiourea,thiosulfate,thiocyanate,polysulfide and calcium polysulphides,halogen and its compound and their advantages and disadvantages, are emphatically introduced.We advocate non-toxic and more effective gold leaching technology to attain the goal of efficient, environmental protection purpose and adapt to industrialization production.