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Gold Extraction by Thiosulphate Leaching in New Catalytic System
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Guangsheng LI1, Jintian WU2, Chao XU1, Xingfu ZHU1, Peng LI3, Zhonglin DONG2, Bin XU2
Mining and Metallurgical Engineering | 2024, 44(3) : 100 - 105
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Mining and Metallurgical Engineering | 2024, 44(3): 100-105
• METALLURGY •
Gold Extraction by Thiosulphate Leaching in New Catalytic System
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Guangsheng LI1, Jintian WU2, Chao XU1, Xingfu ZHU1, Peng LI3, Zhonglin DONG2, Bin XU2
Affiliations
  • 1.Metallurgical Laboratory Branch of Shandong Gold Mining Technology Co Ltd, Yantai 261441, Shandong, China
  • 2.School of Mineral Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China
  • 3.Shandong Gold Mining Co Ltd, Jinan 250103, Shandong, China
Published: 2024-06-01 doi: 10.3969/j.issn.0253-6099.2024.03.022
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In order to determine a new type of gold leaching system, which can not only bring good leaching effect with low consumption of thiosulfate, but also make the gold in the lixivium to be efficiently recovered, the leaching effects of gold with thiosulfate catalyzed by different combination of metal ions and organic ligands were compared, and then the gold in the lixivium was recovered by resin adsorption. The results indicate that the Ni2+-glycine-thiosulfate system can bring good Au leaching effect, showing Au leaching rate up to 89.72% with thiosulfate consumption of 15.28 kg/t. During the gold leaching process in this system, glycine catalyzes the coordination of Au+ with S2O32- and also stabilizes Ni2+ under alkaline conditions, and Ni (C2H4NO2)20 catalyzes the reduction of O2. When Au is recovered by resin adsorption, Ni ions in the lixivium are hardly adsorbed on the resin, and do not compete with Au ions for adsorption, resulting in Au adsorption rate up to 98.13%. Then, only one-step process is required for desorption of gold-loaded resin, that is, Au can be directly desorbed.

metal ion  /  organic ligands  /  adsorb  /  desorb  /  catalytic system  /  thiosulfate method  /  resin adsorption  /  gold extraction
Guangsheng LI, Jintian WU, Chao XU, Xingfu ZHU, Peng LI, Zhonglin DONG, Bin XU. Gold Extraction by Thiosulphate Leaching in New Catalytic System[J]. Mining and Metallurgical Engineering, 2024 , 44 (3) : 100 -105 . DOI: 10.3969/j.issn.0253-6099.2024.03.022
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Year 2024 volume 44 Issue 3
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doi: 10.3969/j.issn.0253-6099.2024.03.022
  • Receive Date：2023-12-02
  • Online Date：2026-03-17
  • Published：2024-06-01
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History
  • Received：2023-12-02
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Affiliations
    1.Metallurgical Laboratory Branch of Shandong Gold Mining Technology Co Ltd, Yantai 261441, Shandong, China
    2.School of Mineral Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China
    3.Shandong Gold Mining Co Ltd, Jinan 250103, Shandong, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2024.03.022
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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