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Key Technology of Preparing Light Rare Earth Fluoride by Induced Crystallization of Fluorine-containing Waste Acid in Rare Earth Metallurgy
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Ting GAO1, 2, Jianguo CUI1, 2, Meng XU1, 2, Shengqiang ZHANG1, 2, Yufu CHEN1, 2, Laxian WEI1, 2, Xuefei LI1, 2, Haijuan GAO1, 2, Xiaoling HOU1, 2
Hydrometallurgy of China | 2025, 44(2) : 158 - 170
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Hydrometallurgy of China | 2025, 44(2): 158-170
• Experiment Research •
Key Technology of Preparing Light Rare Earth Fluoride by Induced Crystallization of Fluorine-containing Waste Acid in Rare Earth Metallurgy
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Ting GAO1, 2, Jianguo CUI1, 2, Meng XU1, 2, Shengqiang ZHANG1, 2, Yufu CHEN1, 2, Laxian WEI1, 2, Xuefei LI1, 2, Haijuan GAO1, 2, Xiaoling HOU1, 2
Affiliations
  • 1 Baotou Research Institute of Rare Earths, Inner Mongolia Autonomous Region, Baotou 014030, China
  • 2 State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou 014030, China
Published: 2025-04-28 doi: 10.13355/j.cnki.sfyj.2025.02.004
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In view of the comprehensive development and utilization of rare earth as a strategic resource and its co-existing fluorine resources, in light of the urgent demand of Bayan Obo characteristic industries for high-abundance light rare earth and functional fluoride, the acid-base medium circulation-induced crystallization technology was developed with low-concentration fluorine-containing waste acid commonly found in rare earth smelting, rare earth metal electrolysis and other industries as the research object. Based on the principle of reaction kinetics and template effect, a microscopic model of induced crystalline rare earth fluoride was designed. The influence of temperature, concentration, instantaneous relative material quantity, acidity and other technological conditions on the synthesis of crystalline rare earth fluoride was investigated, and the crystallization, combination and substitution mechanisms of fluorine, inducer and rare earth were revealed. The key scientific problem of colloidal precipitation of rare earth fluoride synthesized in liquid phase is solved. The entire set of technologies can realize the high-value utilization of co-associated fluorine resources, ensure that co-associated fluorine resources as an important supplement of strategic mineral resources fluorite, and have significant economic and social benefits and broad application prospects.

fluorine-containing waste acid  /  induced crystallization  /  rare earth fluoride  /  perparation
Ting GAO, Jianguo CUI, Meng XU, Shengqiang ZHANG, Yufu CHEN, Laxian WEI, Xuefei LI, Haijuan GAO, Xiaoling HOU. Key Technology of Preparing Light Rare Earth Fluoride by Induced Crystallization of Fluorine-containing Waste Acid in Rare Earth Metallurgy[J]. Hydrometallurgy of China, 2025 , 44 (2) : 158 -170 . DOI: 10.13355/j.cnki.sfyj.2025.02.004
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Year 2025 volume 44 Issue 2
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Article Info
doi: 10.13355/j.cnki.sfyj.2025.02.004
  • Receive Date：2024-08-16
  • Online Date：2025-07-05
  • Published：2025-04-28
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  • Received：2024-08-16
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Affiliations
    1 Baotou Research Institute of Rare Earths, Inner Mongolia Autonomous Region, Baotou 014030, China
    2 State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou 014030, China
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Citations
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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