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Step-up Separation of Indium and Associated Elements from Zinc Oxide Dust Using Choline-Oxalic Acid Chloride
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Liangjin ZHANG1, 2, Yongzhi LIU1, 3, Qiyuan YU1, 3, Yue LONG1, 3, Yuzhu ZHANG1, 3
Hydrometallurgy of China | 2026, 45(1) : 52 - 57
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Hydrometallurgy of China | 2026, 45(1): 52-57
• Experiment Research •
Step-up Separation of Indium and Associated Elements from Zinc Oxide Dust Using Choline-Oxalic Acid Chloride
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Liangjin ZHANG1, 2, Yongzhi LIU1, 3, Qiyuan YU1, 3, Yue LONG1, 3, Yuzhu ZHANG1, 3
Affiliations
  • 1.School of Metallurgy and Energy, North China University of Science and Technology, Tangshan　063210, China
  • 2.Inspection and Certification Co., Ltd., MCC, Beijing　100088, China
  • 3.Key Laboratory of Modern Metallurgical Technology, Ministry of Education, North China University of Science and Technology, Tangshan　063210, China
Published: 2026-02-20 doi: 10.13355/j.cnki.sfyj.2026.01.008
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In order to efficiently enrich indium (In) in zinc oxide dust and realize the directional separation and recovery of associated elements, Zn, Fe, Pb and In were leached from the dust by choline chloride-oxalate dihydrate low eutectic solvent, and the “hydrolytic removal of zinc and lead-ultraviolet light reduction iron removal” process was used to remove impurities step by step. The results show that the leaching rates of Zn, In, Pb and Fe can reach 95.52%, 88.91%, 80.82% and 89.13%, respectively, under the optimal leaching conditions of liquid volume to solid mass ratio of 12 mL/1 g, temperature of 70 ℃ and time of 6 h. Zn/Pb is removed by hydrolytic precipitation, and then Fe is removed by ultraviolet reduction precipitation. After the step-by-step precipitation and impurity removal treatment, the mass fraction of indium in the solution has increased from 0.03% to 1.5%, successfully achieving efficient enrichment of indium and directional separation and recovery of associated elements such as Zn, Pb, and Fe.

deep eutectic solvent  /  zinc oxide dust  /  indium  /  cascade extraction  /  leaching  /  separation  /  recovery
张良进, 刘勇志, 于奇元, 龙跃, 张玉柱. 用氯化胆碱-草酸从次氧化锌粉尘中梯级分离铟及伴生元素. 湿法冶金, 2026 , 45 (1) : 52 -57 . DOI: 10.13355/j.cnki.sfyj.2026.01.008
Liangjin ZHANG, Yongzhi LIU, Qiyuan YU, Yue LONG, Yuzhu ZHANG. Step-up Separation of Indium and Associated Elements from Zinc Oxide Dust Using Choline-Oxalic Acid Chloride[J]. Hydrometallurgy of China, 2026 , 45 (1) : 52 -57 . DOI: 10.13355/j.cnki.sfyj.2026.01.008
Appendix
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Year 2026 volume 45 Issue 1
144
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Article Info
doi: 10.13355/j.cnki.sfyj.2026.01.008
  • Receive Date：2025-05-12
  • Online Date：2026-09-28
  • Published：2026-02-20
Article Data
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History
  • Received：2025-05-12
  • Revised：2025-08-17
Funding
Affiliations
    1.School of Metallurgy and Energy, North China University of Science and Technology, Tangshan　063210, China
    2.Inspection and Certification Co., Ltd., MCC, Beijing　100088, China
    3.Key Laboratory of Modern Metallurgical Technology, Ministry of Education, North China University of Science and Technology, Tangshan　063210, 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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