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Flotation Separation and Its Mechanism of Lead-Zinc Sulfide Ore Under Low-Alkali Conditions
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Zhongyu CHEN1, 2, Qiang LIU2, Guanfei ZHAO1, Tingsheng QIU1, Wen YU1, Song LIU3, Wenhui YANG1
Mining and Metallurgical Engineering | 2026, 46(1) : 102 - 107
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Mining and Metallurgical Engineering | 2026, 46(1): 102-107
• MINERAL PROCESSING •
Flotation Separation and Its Mechanism of Lead-Zinc Sulfide Ore Under Low-Alkali Conditions
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Zhongyu CHEN1, 2, Qiang LIU2, Guanfei ZHAO1, Tingsheng QIU1, Wen YU1, Song LIU3, Wenhui YANG1
Affiliations
  • 1.School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China
  • 2.Fankou Lead Zinc Mine, Shenzhen Zhongjin Lingnan Nonfemet Co., Ltd., Shaoguan 512300, Guangdong, China
  • 3.Jiangxi Jiangtong Yinzhushan Mining Co., Ltd., Yingtan 335000, Jiangxi, China
doi: 10.3969/j.issn.0253-6099.2026.01.017
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A lead-zinc sulfide ore with high sulfur content in a mine always causes calcium scaling in pipelines in practical production, and also requires strong acid activation in the subsequent sulfur floatation. In consideration of these disadvantages, a new reagent was proposed to be used in flotation process under alkaline conditions for improving the floatation indicators. Then, an experiment was conducted by adopting a process of preferential flotation of lead-zinc-sulfur in sequence under low-alkaline conditions with a new collector (BN+311) and a new activator (H1). It is shown that with the raw ore assaying 4.20% Pb, 9.39% Zn and 30.27% S, the sequential flotation of lead, zinc and sulfur yields a lead concentrate grading 55.37% Pb (containing 1.98% Zn and 24.95% S), a zinc concentrate grading 53.49% Zn, and a sulfur concentrate grading 48.07% S (containing 0.50% Pb and 0.26% Zn); while the contents of Pb and Zn in the tailings are 0.66% and 0.37%, respectively. By reducing the on-site pulp pH from 12 to about 9, qualified lead and zinc concentrates can be produced by adopting this process, and the sulfur concentrate can also be obtained with low contents of Pb and Zn, presenting excellent flotation indicators.

lead zinc ore  /  galena  /  sphalerite  /  flotation  /  inhibitor  /  low alkali  /  collector  /  activator  /  preferential flotation  /  lead concentrate  /  zinc concentrate; sulfur concentrate
陈忠玉, 刘强, 赵冠飞, 邱廷省, 余文, 刘松, 杨雯慧. 低碱条件下铅锌硫化矿浮选分离及机理研究. 矿冶工程杂志, 2026 , 46 (1) : 102 -107 . DOI: 10.3969/j.issn.0253-6099.2026.01.017
Zhongyu CHEN, Qiang LIU, Guanfei ZHAO, Tingsheng QIU, Wen YU, Song LIU, Wenhui YANG. Flotation Separation and Its Mechanism of Lead-Zinc Sulfide Ore Under Low-Alkali Conditions[J]. Mining and Metallurgical Engineering, 2026 , 46 (1) : 102 -107 . DOI: 10.3969/j.issn.0253-6099.2026.01.017
Appendix
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Year 2026 volume 46 Issue 1
146
27
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Article Info
doi: 10.3969/j.issn.0253-6099.2026.01.017
  • Receive Date：2025-09-09
  • Online Date：2026-10-08
Article Data
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  • Received：2025-09-09
Funding
Affiliations
    1.School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China
    2.Fankou Lead Zinc Mine, Shenzhen Zhongjin Lingnan Nonfemet Co., Ltd., Shaoguan 512300, Guangdong, China
    3.Jiangxi Jiangtong Yinzhushan Mining Co., Ltd., Yingtan 335000, Jiangxi, 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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