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Preparation of ZnSO4•7H2O by Extracting Zinc from Purified Solution of Sulphuric Acid Leaching from Flotation Lead Tailings with P204
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Shuanquan GUO1, 2, Min KANG1, 2, Mei GUO1, 2, Xinxia NING1, 2
Hydrometallurgy of China | 2025, 44(1) : 111 - 117
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Hydrometallurgy of China | 2025, 44(1): 111-117
• Experiment Research •
Preparation of ZnSO4•7H2O by Extracting Zinc from Purified Solution of Sulphuric Acid Leaching from Flotation Lead Tailings with P204
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Shuanquan GUO1, 2, Min KANG1, 2, Mei GUO1, 2, Xinxia NING1, 2
Affiliations
  • 1 Xi'an Northwest Nonferrous Geological Research Institute Co., Ltd., Xi'an 710054, China
  • 2 Shaanxi Engineering and Technology Research Center for Comprehensive Utilization of Mineral Resources, Xi'an 710054, China
Published: 2025-02-28 doi: 10.13355/j.cnki.sfyj.2025.01.015
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The extraction of zinc by P204(Di-(2-ethylhexyl) phosphate) from sulfuric acid leaching purification liquid of flotation lead tailings was studied. The extraction and stripping conditions were optimized. ZnSO4•7H2O was prepared by evaporation and crystallization of zinc-rich liquid. The results show that under the conditions of organic phase composition of 50%P204+50%sulfonated kerosene, saponification degree of P204 of 65%, extract pH of 3.5, extraction phase ratio VA/VO=1/1, extraction time of 10 min and two stages of extraction, the extraction rate of zinc can reach 99.11%. Under the conditions of H2SO4 concentration of 7%, stripping phase ratio VO/VA=2/1, stripping time of 10 min and three stages of stripping, the stripping rate of zinc can reach 99.32%. The prepared ZnSO4•7H2O Can meet the requirements of HG/T 2326—2015, and its microstructure is uniformly distributed in granular and layered structures.

flotation of lead tailings  /  extraction  /  P204  /  zinc sulfate heptahydrate  /  sulfuric acid leaching  /  zinc
Shuanquan GUO, Min KANG, Mei GUO, Xinxia NING. Preparation of ZnSO4•7H2O by Extracting Zinc from Purified Solution of Sulphuric Acid Leaching from Flotation Lead Tailings with P204[J]. Hydrometallurgy of China, 2025 , 44 (1) : 111 -117 . DOI: 10.13355/j.cnki.sfyj.2025.01.015
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doi: 10.13355/j.cnki.sfyj.2025.01.015
  • Receive Date：2024-03-08
  • Online Date：2025-08-08
  • Published：2025-02-28
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  • Received：2024-03-08
Affiliations
    1 Xi'an Northwest Nonferrous Geological Research Institute Co., Ltd., Xi'an 710054, China
    2 Shaanxi Engineering and Technology Research Center for Comprehensive Utilization of Mineral Resources, Xi'an 710054, 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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