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The cyanide wastewater from gold mines contains a large amount of cyanide, mainly including CN−, Fe(CN)64−, Cu(CN)32−, Zn(CN)42−, etc. To explore the mechanism and rules of iron salt treatment of cyanide containing wastewater, the reaction rules of iron salt with CN−, Fe(CN)64−, Cu(CN)32−, Zn(CN)42− in cyanide containing wastewater under different pH conditions were experimentally studied, and the pH range with the best cyanide removal effect was determined. Based on this, an ideal index was obtained by treating a certain cyanide containing wastewater with iron salt, and a two-step precipitation treatment technology for cyanide containing wastewater was developed.

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Experimental Study on Iron Salt Cyanide Removal Technology from Cyanide Wastewater in Gold Mines

  • 会议论文

  • 发表日期：

    2026年

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  • Yanbo Chen,
  • Guangsheng Li,
  • Xingfu Zhu,
  • Junjie Wang

摘要

The cyanide wastewater from gold mines contains a large amount of cyanide, mainly including CN−, Fe(CN)64−, Cu(CN)32−, Zn(CN)42−, etc. To explore the mechanism and rules of iron salt treatment of cyanide containing wastewater, the reaction rules of iron salt with CN−, Fe(CN)64−, Cu(CN)32−, Zn(CN)42− in cyanide containing wastewater under different pH conditions were experimentally studied, and the pH range with the best cyanide removal effect was determined. Based on this, an ideal index was obtained by treating a certain cyanide containing wastewater with iron salt, and a two-step precipitation treatment technology for cyanide containing wastewater was developed.