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几乎在一百年前,自开始应用氰化物作为最佳浸出剂以来,氰化法就是回收金的标准方法.然而,有许多矿石含有比金更耗氰化物的成分,其中最主要的是铁、铜、砷和锑的各种硫化矿物.使用氨—氰化物方法从铜—金矿石中选择性浸出金时氰化物耗量较小.关于氨—氰化物方法的化学,近代已经有较好的阐述,但文献表明,对于金的溶解仍然有一些争议,并且对不同矿石用氨—氰化物浸出缺乏系统研究.天然矿物的不同地球物理和地球化学特性能引起金浸出动力学和机理的一定差异.尾矿特性也能引起这种差异.而从铜—金矿石中富集铜时,选出矿物的类型又会影响尾矿的特性.在所研究的金矿石中,脉石矿物的吸附特性也影响金浸出的动力学和机理.
Almost a hundred years ago cyanidation was the standard method of recovery of gold since the beginning of the application of cyanide as an optimal leaching agent.However, many ores contain more cyanide-laden ingredients than gold, the most important being iron , Copper, arsenic, and antimony. Cyanide consumption is less for the selective leaching of gold from copper-gold ores using the ammonia-cyanide method. As for the chemistry of the ammonia-cyanide method, modern times have been well developed , The literature shows that there is still some controversy over the dissolution of gold and the lack of systematic studies on the leaching of ammonia-cyanides from different ores.The different geophysical and geochemical characteristics of natural minerals can lead to certain gold leaching kinetics and mechanisms Difference.Tailing characteristics can also cause this difference.While copper is enriched from copper-gold ore, the type of mineral selected will affect the tailings characteristics.In the studied gold ore, the adsorption of gangue minerals Properties also affect the kinetics and mechanism of gold leaching.