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Selective Extraction and Separation of Copper and Cobalt from Roasting-Leaching Solution of Pyrite Concentrate
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Jiaxing LIU1, Wentao XU1, Zhenhua ZHOU2, Zhanfeng ZHANG2, Shuaifeng YANG2, Xiuying YANG2, Yupeng LI2, Baisui HAN1
Hydrometallurgy of China | 2026, 45(1) : 83 - 89
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Hydrometallurgy of China | 2026, 45(1): 83-89
• Experiment Research •
Selective Extraction and Separation of Copper and Cobalt from Roasting-Leaching Solution of Pyrite Concentrate
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Jiaxing LIU1, Wentao XU1, Zhenhua ZHOU2, Zhanfeng ZHANG2, Shuaifeng YANG2, Xiuying YANG2, Yupeng LI2, Baisui HAN1
Affiliations
  • 1.School of Minging Engineering, University of Science and Technology Liaoning, Anshan　114051, China
  • 2.Baotong Mining Company Limited, Chengde　067000, China
Published: 2026-02-20 doi: 10.13355/j.cnki.sfyj.2026.01.012
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To address the difficulty of separating copper and cobalt coexisting in the leaching solution of low-grade sulfide concentrates after roasting, a combined process of synergistic extraction-stripping-chemical precipitation was investigated to recover copper and cobalt. The results show that using P204+P507 as the extractant achieves copper extraction rate of 99.31% under the conditions of original station pH = 3, Vo∶Va = 1∶1, and reaction time of 10 min. When N235 + C272 was used as the extractant at copper extract residue pH=4, Vo∶Va = 2∶1 and reaction time of 10 min, the cobalt extraction rate reaches 99.63%. Using 0.2 mol/L H2SO4 as the stripping agent results in stripping efficiencies of 99.65% for copper and 98.65% for cobalt. With NaOH and Na2CO3 as precipitants, Cu(OH)2 with a purity of 99.90% and CoCO3 with a purity of 99.99% are obtained. The combined separation process can achieve efficient separation of copper and cobalt and produce high-purity products, providing a feasible technical approach for the comprehensive utilization of low-grade sulfur concentrate resources and having certain significance in alleviating the shortage of copper and cobalt resources in China.

copper  /  cobalt  /  separation  /  synergistic extraction  /  chemical precipitation
刘佳兴, 徐文涛, 周振华, 张占峰, 杨帅峰, 杨秀莹, 李玉鹏, 韩百岁. 硫精矿焙烧—浸出液中铜和钴的选择性萃取分离研究. 湿法冶金, 2026 , 45 (1) : 83 -89 . DOI: 10.13355/j.cnki.sfyj.2026.01.012
Jiaxing LIU, Wentao XU, Zhenhua ZHOU, Zhanfeng ZHANG, Shuaifeng YANG, Xiuying YANG, Yupeng LI, Baisui HAN. Selective Extraction and Separation of Copper and Cobalt from Roasting-Leaching Solution of Pyrite Concentrate[J]. Hydrometallurgy of China, 2026 , 45 (1) : 83 -89 . DOI: 10.13355/j.cnki.sfyj.2026.01.012
Appendix
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Year 2026 volume 45 Issue 1
146
32
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Article Info
doi: 10.13355/j.cnki.sfyj.2026.01.012
  • Receive Date：2025-08-30
  • Online Date：2026-09-28
  • Published：2026-02-20
Article Data
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History
  • Received：2025-08-30
  • Revised：2025-10-16
Funding
Affiliations
    1.School of Minging Engineering, University of Science and Technology Liaoning, Anshan　114051, China
    2.Baotong Mining Company Limited, Chengde　067000, 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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