A Method for Leaching or Dissolving Gold from Ores or ...

native from -bearing ores. It has been known for more than a century that alkaline solutions of alkali-metal cyanides e.g., NaCN, KCN dissolve under aerated conditions. The dis-solution of metallic is due to the strong complexing capabilities of cya-nide anions combined with the oxidizing properties of the dissolved molecular

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