Principles and Research Progress of Non−cyanide Leaching of Refractory Gold Ores

WU Zhipeng; WANG Xingxing; QI Lei; YANG Bin; DAI Huixin

doi:10.13779/j.cnki.issn1001-0076.2024.08.016

2025 Vol. 45, No. 2

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Article navigation > Conservation and Utilization of Mineral Resources > 2025 > 45(2): 116-124

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WU Zhipeng, WANG Xingxing, QI Lei, YANG Bin, DAI Huixin. Principles and Research Progress of Non−cyanide Leaching of Refractory Gold Ores[J]. Conservation and Utilization of Mineral Resources, 2025, 45(2): 116-124. doi: 10.13779/j.cnki.issn1001-0076.2024.08.016

Citation:

WU Zhipeng, WANG Xingxing, QI Lei, YANG Bin, DAI Huixin. Principles and Research Progress of Non−cyanide Leaching of Refractory Gold Ores[J]. Conservation and Utilization of Mineral Resources, 2025, 45(2): 116-124. doi: 10.13779/j.cnki.issn1001-0076.2024.08.016

Principles and Research Progress of Non−cyanide Leaching of Refractory Gold Ores

1.
School of Land and Resource Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
2.
State Key Laboratory of Mineral Processing, Beijing 102628, China
3.
Pu 'er Inspection and Testing Institute, Pu 'er 665099, Yunnan, China
4.
Heqing Beiya Mining Co., Ltd, Dali 671000, Yunnan, China
5.
Yunnan Diqing Nonferrous Metals Limited Liability Company, Diqing 674401, Yunnan, China

More Information

Corresponding author: WANG Xingxing, 675537448@qq.com

Received Date: 14 June 2024

Publish Date: 15 April 2025

Abstract

Abstract

Cyanide leaching is currently the most commonly used method for extracting gold from difficult−to−treat ore, due to its high leaching efficiency and low cost. However, the use of cyanide is associated with significant environmental and human health risks due to its high toxicity, and further treatment of waste water. As a result, there has been a significant amount of research into non−cyanide leaching processes. Non−cyanide leaching of gold is a low−toxicity process that offers numerous environmental and other benefits. It has become an important area of research in the development and exploitation of gold ore. In this regard, the principle and research progress of eight non−cyanide leaching methods are reviewed, such as the thiosulfate method, the amino acid method, the thiocyanate method, the rock sulfide synthesis method, the thiourea method, the halogen leaching method, the bioleaching method, and the polysulfide method, and their advantages and disadvantages are summarized. Finally, The development direction of non−cyanide gold leaching technology is also prospected.
- non−cyanide gold leaching /
- thiosulfate method /
- amino acid method /
- thiourea method /
- lime−sulfur−synthetic solution method /
- thiocyanate method /
- biological gold leaching

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References

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