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Preparation of Large-Sized High-Purity Praseodymium and Neodymium Oxide by Precipitation with Sodium Bicarbonate
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Yi YE1, Yimin LI1, Jishu ZENG1, Zhiwei ZHOU1, Jianchun QIN1, Kuan LI2, Wuxia PAN2, Zezuo JIANG2, Qi HE2
Mining and Metallurgical Engineering | 2023, 43(1) : 114 - 117
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Mining and Metallurgical Engineering | 2023, 43(1): 114-117
• METALLURGY •
Preparation of Large-Sized High-Purity Praseodymium and Neodymium Oxide by Precipitation with Sodium Bicarbonate
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Yi YE1, Yimin LI1, Jishu ZENG1, Zhiwei ZHOU1, Jianchun QIN1, Kuan LI2, Wuxia PAN2, Zezuo JIANG2, Qi HE2
Affiliations
  • 1.School of Mechanical and Automobile Engineering, Guangxi University of Science and Technology, Liuzhou 545616, Guangxi, China
  • 2.Guangxi Guosheng Rare Earth New Materials Co Ltd, Chongzuo 532200, Guangxi, China
Published: 2023-02-01 doi: 10.3969/j.issn.0253-6099.2023.01.025
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With sodium bicarbonate as a precipitant, praseodymium neodymium oxide was prepared by feeding step by step in a positive sequence. The effects of pH value at the end of precipitation and precipitation temperature on particle size and impurity content of the precursor and product of praseodymium neodymium oxide were all investigated. The results show that precipitation at 50 ℃ with pH value of 5.10 at the end can prepare a praseodymium neodymium oxide powder with a median particle size D50 of 21.45 μm and narrow particle size distribution. It is sphere-like powder formed by flake crystallization agglomeration, with the content of Cl-and Na2O at 0.017% and 0.012%, respectively, indicating higher than the national standards.

praseodymium neodymium oxide  /  temperature  /  pH value  /  grain size  /  impurity  /  precipitant  /  sodium bicarbonate  /  method of precipitation
Yi YE, Yimin LI, Jishu ZENG, Zhiwei ZHOU, Jianchun QIN, Kuan LI, Wuxia PAN, Zezuo JIANG, Qi HE. Preparation of Large-Sized High-Purity Praseodymium and Neodymium Oxide by Precipitation with Sodium Bicarbonate[J]. Mining and Metallurgical Engineering, 2023 , 43 (1) : 114 -117 . DOI: 10.3969/j.issn.0253-6099.2023.01.025
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Year 2023 volume 43 Issue 1
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Article Info
doi: 10.3969/j.issn.0253-6099.2023.01.025
  • Receive Date：2022-09-03
  • Online Date：2026-03-05
  • Published：2023-02-01
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  • Received：2022-09-03
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Affiliations
    1.School of Mechanical and Automobile Engineering, Guangxi University of Science and Technology, Liuzhou 545616, Guangxi, China
    2.Guangxi Guosheng Rare Earth New Materials Co Ltd, Chongzuo 532200, Guangxi, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2023.01.025
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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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