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Extraction and Separation of Iron,Aluminum and Nickel from Electroplating Sludge by P204 Stepwise Extraction Process
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Zhen LUO1, 2, Xin LAN2, Zhan QU3, Suiyi ZHU2
Hydrometallurgy of China | 2024, 43(5) : 559 - 565
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Hydrometallurgy of China | 2024, 43(5): 559-565
• Experiment Research •
Extraction and Separation of Iron,Aluminum and Nickel from Electroplating Sludge by P204 Stepwise Extraction Process
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Zhen LUO1, 2, Xin LAN2, Zhan QU3, Suiyi ZHU2
Affiliations
  • 1 Xindu Environment Technology Co., Ltd., Wuxi 214200, China
  • 2 College of Resource and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou 510000, China
  • 3 Institute for the Environment and Health, Nanjing University, Suzhou 215000, China
Published: 2024-10-20 doi: 10.13355/j.cnki.sfyj.2024.05.012
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Extraction and separation of iron, aluminum and heavy metal nickel from electroplating sludge by P204 stepwise extraction process was studied. The effect of pH on the extraction process was discussed. The results show that the leaching solution of electroplating sludge after pretreatment with sulfuric acid was rich in nickel, and the insoluble substances were mainly calcium sulfate and silicon.Using 20%P204+80%sulfonated kerosene as organic phase, the extraction rates of Fe and Al can reach 99.9% and 97.6%, respectively, while the nickel loss rate is less than 2% under the conditons of VO/VA=1/1, electroplating sludge leaching solution nitial pH=0.9. When the pH of the raffinate is adjusted to 4.5, VO/VA =1/1, and the organic phase is 15%P204+85% sulfonated kerosene, the nickel extraction rate can reach 98% after four-stage extraction. The nickel-rich solution is obtained by four-stage strripping with 2 moL/L sulfuric acid, and nickel sulfate crystals with 22% nickel mass fraction are obtained by evaporation and crystallization.

electroplating sludge  /  P204  /  extraction  /  nickel  /  iron  /  aluminum  /  separation  /  sulfuric acid
Zhen LUO, Xin LAN, Zhan QU, Suiyi ZHU. Extraction and Separation of Iron,Aluminum and Nickel from Electroplating Sludge by P204 Stepwise Extraction Process[J]. Hydrometallurgy of China, 2024 , 43 (5) : 559 -565 . DOI: 10.13355/j.cnki.sfyj.2024.05.012
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doi: 10.13355/j.cnki.sfyj.2024.05.012
  • Receive Date：2024-06-28
  • Online Date：2025-09-10
  • Published：2024-10-20
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  • Received：2024-06-28
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Affiliations
    1 Xindu Environment Technology Co., Ltd., Wuxi 214200, China
    2 College of Resource and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou 510000, China
    3 Institute for the Environment and Health, Nanjing University, Suzhou 215000, 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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