材料期刊网

遂昌金矿针对高杂质氰化金泥采用的工艺为：硫酸加络合剂联合酸洗除铜锌、还原熔炼气氛下铅捕集金银生产银阳极板、一次银电解过程实现金银铅的分离、酸碱联合处理黑金粉、高酸低铜银电解生产工艺、非对称交流电源用于金电解生产等。该工艺生产的高纯银达99.996%以上、高纯金的质量稳定在99.997%以上，杂质含量远远小于高纯金(99.999%)的要求，流程操作简单，成品金银质量在国内处于领先地位。

Considering its high impurity, Suichang Gold Mine smelts the cyaniding gold mud using the following processes: remove copper and zinc by combined pickling of sulfuric acid and complexing agent; produce silver positive plate by using lead to capture the gold and silver in the reduction smelting atmosphere; separate gold, silver and lead through the first electrolysis of silver; treat the black gold powder by acid-alkali-combination method; high-acid and low-copper silver electrolysis process; asymmetric ac power applied to gold electrolysis process; and etc. By using this process, the content of high pure silver produced can reach up to more than 99.996%, the content of high pure gold produced is stably more than 99.997%, and the contents of impurities are far less than the state-specified standard of high pure gold, which is 99.999%. The flowsheet is simple and convenient to operate, and the quality of finished product of gold and silver is in the leading position nationwide.