The geochemical features of the ores present in the oxidation zone of the gold-copper Malmyzh mineral deposit are characterized. This deposit is located in the the Nanaian region of the Khabarovsk Territory in the Russian Federation, and a technological assessment of ores present was carried out. The initial gold content in the oxidized ore is 0.1–1.2 ppm, and the leachability of gold from different size fractions by hot cyanide revealed the fact that the ore is not refractory and characterized by increased cyanide consumption. The results demonstrated a high gold content in fine size fractions. Different leaching reagents were applied for oxidized ore testing. These reagents were used both for oxidative pretreatment and leaching process. Activation of solutions was carried out by electrolysis and UV radiation. Different reagent combinations were tested in laboratory with the highest gold recovery (94%) provided by the chloride system with peroxide-sulfuric pretreatment of the oxidized ore. The same reagent combination resulted in 91–94% gold recovery during the column leaching of crushed ( −10 mm) ore.

中文翻译：

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Malmyzh Cu-Au斑岩矿床氧化带中低品位矿石湿法冶金加工可能性的评估

对金铜Malmyzh矿床氧化带中存在的矿石的地球化学特征进行了表征。该矿床位于俄罗斯联邦哈巴罗夫斯克领地的纳纳地区，并对存在的矿石进行了技术评估。氧化矿石中的初始金含量为0.1-1.2 ppm，热氰化物可从不同大小的馏分中浸出金，这表明矿石不是难熔品，其特点是氰化物消耗量增加。结果表明，细颗粒中的金含量很高。将不同的浸出试剂用于氧化矿石测试。这些试剂可用于氧化预处理和浸出过程。通过电解和UV辐射进行溶液的活化。在实验室中测试了不同的试剂组合，具有最高的金回收率（94％），这是由氯化物系统提供的，对过氧化的矿石进行过氧化物硫预处理。相同的试剂组合可在粉碎（-10 mm）矿石的柱浸过程中回收91-94％的金。