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Process and Kinetics of P204 Synergistic Extraction of Uranium in Phosphoric Acid Medium
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Jiayu ZHANG, Yuqing NIU, Shaohui KANG, Kaikai YE, Yan REN, Linghua CAO, Zhiquan ZHOU, Haonan SHEN
Hydrometallurgy of China | 2026, 45(3) : 392 - 398
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Hydrometallurgy of China | 2026, 45(3): 392-398
• Experiment Research •
Process and Kinetics of P204 Synergistic Extraction of Uranium in Phosphoric Acid Medium
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Jiayu ZHANG, Yuqing NIU, Shaohui KANG, Kaikai YE, Yan REN, Linghua CAO, Zhiquan ZHOU, Haonan SHEN
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  • Beijing Research Institute of Chemical Engineering and Metallurgy, CNNC, Beijing　101149, China
Published: 2026-06-20 doi: 10.13355/j.cnki.sfyj.2026.03.014
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A P204-TOPO-sulfonated kerosene synergistic extraction-Fe(Ⅱ) reduction stripping system was constructed. The effects of extraction reaction time, phosphoric acid concentration, extraction temperature, amount of iron powder and stripping temperature were investigated, and the optimal process conditions were determined. The results show that the extraction-stripping of uranium conforms to the law of diffusion control-in-phase reaction. The apparent activation energy of the extraction reaction is 34.76 kJ/mol, and that of the stripping reaction is 40.289 kJ/mol. The system is controlled by both mass transfer and chemical reaction. The optimal extraction conditions are room temperature, extraction time of 6 min, phosphoric acid concentration of 3.5 mol/L, and VO/VA=1/5. The optimal stripping conditions are temperature of 323.15 K, stripping time of 10 min, phosphoric acid concentration of 5 mol/L, reduced iron powder amount of 10 times the theoretical amount, and VO/VA=5/1. Under the optimal conditions, the uranium extraction rate is 96% and the stripping rate is 81.3%.

wet-process phosphoric acid  /  extraction  /  P204  /  uranium  /  ferrous reduction stripping
Jiayu ZHANG, Yuqing NIU, Shaohui KANG, Kaikai YE, Yan REN, Linghua CAO, Zhiquan ZHOU, Haonan SHEN. Process and Kinetics of P204 Synergistic Extraction of Uranium in Phosphoric Acid Medium[J]. Hydrometallurgy of China, 2026 , 45 (3) : 392 -398 . DOI: 10.13355/j.cnki.sfyj.2026.03.014
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Year 2026 volume 45 Issue 3
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doi: 10.13355/j.cnki.sfyj.2026.03.014
  • Receive Date：2026-03-18
  • Online Date：2026-09-11
  • Published：2026-06-20
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  • Received：2026-03-18
  • Revised：2026-04-09
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    Beijing Research Institute of Chemical Engineering and Metallurgy, CNNC, Beijing　101149, 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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