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Experimental Study on Stepwise Flotation Recovery of Copper-Gold ore from Xizang
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Feng JIANG1, Pengyuan WANG1, Zhisen WEN2, Chunlong LIU3, Xiaomin HE3, Jinling LIAO3, Wei SUN1
Mining and Metallurgical Engineering | 2025, 45(4) : 58 - 62
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Mining and Metallurgical Engineering | 2025, 45(4): 58-62
• MINERAL PROCESSING •
Experimental Study on Stepwise Flotation Recovery of Copper-Gold ore from Xizang
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Feng JIANG1, Pengyuan WANG1, Zhisen WEN2, Chunlong LIU3, Xiaomin HE3, Jinling LIAO3, Wei SUN1
Affiliations
  • 1.Central South University, Changsha 410083, Hunan, China
  • 2.Zijin Mining Group Co., Ltd., Longyan 364299, Fujian, China
  • 3.Xizang Julong Copper Co., Ltd., Lhasa, 850000, Xizang, China
Published: 2025-08-01 doi: 10.3969/j.issn.0253-6099.2025.04.010
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A copper-gold ore from Xizang grades 0.50% Cu and 0.24 g/t Au, in which chalcopyrite as the dominant copper mineral is finely disseminated. It was proposed that a stepwise flotation process be employed to process this ore. At the first-stage roughing, a non-polar collector CM-2 was adopted under low-alkaline conditions to recover those easily floatable copper and gold minerals, and at the second-stage roughing, Z-200 was adopted to enhance copper flotation effect, so as to improve the recovery rates of copper and gold. A closed-circuit experiment yielded a copper-gold concentrate grading 22.33% Cu and 9.96 g/t Au at the corresponding recoveries of 90.57% and 79.83%, respectively. Compared to high-alkaline flotation processes with ethyl xanthate or Z-200 as collectors, this stepwise flotation process can increase gold recovery by more than 10 percentage points. This technical process can not only avoid depression effect of lime on gold minerals, but also strengthen the collecting effect of copper and gold minerals, thus achieving efficient resource recovery. This study can provide a reference for exploitation and utilization of similar ores.

flotation  /  copper ore  /  gold  /  stepwise flotation  /  non-polar collector  /  low-alkaline flotation
Feng JIANG, Pengyuan WANG, Zhisen WEN, Chunlong LIU, Xiaomin HE, Jinling LIAO, Wei SUN. Experimental Study on Stepwise Flotation Recovery of Copper-Gold ore from Xizang[J]. Mining and Metallurgical Engineering, 2025 , 45 (4) : 58 -62 . DOI: 10.3969/j.issn.0253-6099.2025.04.010
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Year 2025 volume 45 Issue 4
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doi: 10.3969/j.issn.0253-6099.2025.04.010
  • Receive Date：2025-02-06
  • Online Date：2026-03-05
  • Published：2025-08-01
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  • Received：2025-02-06
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Affiliations
    1.Central South University, Changsha 410083, Hunan, China
    2.Zijin Mining Group Co., Ltd., Longyan 364299, Fujian, China
    3.Xizang Julong Copper Co., Ltd., Lhasa, 850000, Xizang, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2025.04.010
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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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