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Extraction of Rare Earth Elements from YAG Fluorescent Powder
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Junyan WANG1, 2, Guangjun MEI1, 2, Mingming YU3, Pengfei WANG1, 2, Yifei LI1, 2, Qiang YAN1, 2
Mining and Metallurgical Engineering | 2025, 45(5) : 142 - 147
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Mining and Metallurgical Engineering | 2025, 45(5): 142-147
• METALLURGY •
Extraction of Rare Earth Elements from YAG Fluorescent Powder
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Junyan WANG1, 2, Guangjun MEI1, 2, Mingming YU3, Pengfei WANG1, 2, Yifei LI1, 2, Qiang YAN1, 2
Affiliations
  • 1.Key Laboratory of Green Utilization of Crtical Non-metallic Mineral Resources, Ministry of Education, Wuhan 430070, Hubei, China
  • 2.School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China
  • 3.School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China
Published: 2025-10-01 doi: 10.3969/j.issn.0253-6099.2025.05.025
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To extract rare earth elements (REE) of yttrium (Y) and cerium (Ce) from yttrium aluminium garnet (YAG) fluorescent powder, experiments were performed for YAG by adopting direct acid leaching and roasting-acid leaching process, respectively. The effects of various factors on the leaching rates of Y and Ce were investigated, including roasting agent types and dosage, roasting temperature, roasting time, as well as leaching temperature and leaching time. It is shown that YAG fluorescent powder is stable in structure, while Y and Ce elements therein, not in the form of simple oxides, cannot be effectively extracted by direct acid leaching; a roasting pretreatment can effectively destroy the structure of YAG fluorescent powder, and convert the rare earth elements into oxides, which is beneficial to the following acid leaching process. After 2 h roasting at 900 ℃ with YAG and Na2CO3 in a mass ratio of 1∶0.5, and then 1 h leaching at 60 ℃ with HCl at a concentration of 3 mol/L, a liquid-solid ratio of 20 mL/g, and 1.2 mL/g of hydrogen peroxide, the leaching rates of Y and Ce can reach 97.23% and 84.91%, respectively.

yttrium aluminium garnet (YAG)  /  fluorescent powder  /  leaching  /  roasting  /  yttrium  /  cerium  /  rare earth
Junyan WANG, Guangjun MEI, Mingming YU, Pengfei WANG, Yifei LI, Qiang YAN. Extraction of Rare Earth Elements from YAG Fluorescent Powder[J]. Mining and Metallurgical Engineering, 2025 , 45 (5) : 142 -147 . DOI: 10.3969/j.issn.0253-6099.2025.05.025
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doi: 10.3969/j.issn.0253-6099.2025.05.025
  • Receive Date：2025-04-25
  • Online Date：2026-03-18
  • Published：2025-10-01
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  • Received：2025-04-25
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Affiliations
    1.Key Laboratory of Green Utilization of Crtical Non-metallic Mineral Resources, Ministry of Education, Wuhan 430070, Hubei, China
    2.School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China
    3.School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, 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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