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Effect of Different Oxidants on Flotation Performance of Gold-Bearing Pyrite
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Ziyuan LIU1, 2, Shujuan DAI1, 2, Linsong YUAN2, Pengcheng LI2, Yu CHEN2
Mining and Metallurgical Engineering | 2025, 45(2) : 64 - 68
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Mining and Metallurgical Engineering | 2025, 45(2): 64-68
• MINERAL PROCESSING •
Effect of Different Oxidants on Flotation Performance of Gold-Bearing Pyrite
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Ziyuan LIU1, 2, Shujuan DAI1, 2, Linsong YUAN2, Pengcheng LI2, Yu CHEN2
Affiliations
  • 1.School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China
  • 2.School of Mining Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China
Published: 2025-04-01 doi: 10.3969/j.issn.0253-6099.2025.02.011
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As for a gold-bearing pyrite from Hebei Province, the influence of four oxidants, including H2SO4, H2O2, HNO3 and KMnO4, on its floatability was investigated, and the adsorption of collectors on pyrite was also explored by infrared (IR) analysis and electrochemistry measurement. The flotation test shows that with H2SO4, H2O2 and HNO3 as oxidants, moderate oxidation can promote the floatability of pyrite, while the oxidation of KMnO4 can obviously depress the floatability of pyrite. The IR analysis shows that the effects of these four oxidants on pyrite-collector interaction are in the following descending order: HNO3>KMnO4>H2O2>H2SO4. The oxidation of KMnO4 may passivate pyrite and reduce its floatability. Electrochemical analysis shows that H2SO4 and HNO3 have obvious oxidation effects on pyrite. By increasing oxidant concentration, the double xanthate formed on pyrite due to its reaction with xanthate will be oxidized by H2O2 solution, and the hydrophobic layer on pyrite will be destroyed, leading to the decline of pyrite's floatability.

pyrite  /  flotation  /  oxidant  /  oxidation  /  electrochemistry  /  gold  /  butyl xanthate  /  collector
Ziyuan LIU, Shujuan DAI, Linsong YUAN, Pengcheng LI, Yu CHEN. Effect of Different Oxidants on Flotation Performance of Gold-Bearing Pyrite[J]. Mining and Metallurgical Engineering, 2025 , 45 (2) : 64 -68 . DOI: 10.3969/j.issn.0253-6099.2025.02.011
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Year 2025 volume 45 Issue 2
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doi: 10.3969/j.issn.0253-6099.2025.02.011
  • Receive Date：2024-11-01
  • Online Date：2026-03-19
  • Published：2025-04-01
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  • Received：2024-11-01
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    1.School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China
    2.School of Mining Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China
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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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