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Process Mineralogy and Flotation Test of Niobium-Bearing Ore from Africa
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Chao LIU1, 2, 3, Hongxi HU1, 2, 3, Zhonghan ZHANG1, 2, 3, Wei HUANG4, Jiping YANG1, 2, 3, Zhiqiang CHEN1, 2, 3
Mining and Metallurgical Engineering | 2025, 45(4) : 95 - 99
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Mining and Metallurgical Engineering | 2025, 45(4): 95-99
• MINERAL PROCESSING •
Process Mineralogy and Flotation Test of Niobium-Bearing Ore from Africa
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Chao LIU1, 2, 3, Hongxi HU1, 2, 3, Zhonghan ZHANG1, 2, 3, Wei HUANG4, Jiping YANG1, 2, 3, Zhiqiang CHEN1, 2, 3
Affiliations
  • 1.Institute of Resources Utilization and Rare Earth Development, Guangdong Academy of Sciences, Guangzhou 510651, Guangdong, China
  • 2.State Key Laboratory of Rare Metals Separation and Comprehensive Utilization, Guangzhou 510651, Guangdong, China
  • 3.Guangdong Provincial Key Laboratory of Mineral Resource and Comprehensive Utilization, Guangzhou 510651, Guangdong, China
  • 4.Shenghe Resources (Lianyungang) New Materials Technology Co., Ltd., Lianyungang, 222042, Jiangsu, China
Published: 2025-08-01 doi: 10.3969/j.issn.0253-6099.2025.04.017
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A process mineralogy study was conducted for a niobium-bearing ore in eastern Africa. Based on the study results, the raw ore was ground to－0.10 mm (100% passing size), and then pretreated with a process consisting of desliming, iron removal and zircon flotation for reducing the influence of slime, magnetite, and zircon on flotation performance. Under weakly acidic conditions, a closed-circuit niobium flotation test was carried out, with water glass and aluminum sulfate as a combined depressant, lead nitrate as an activator, and a self-developed chelating collector GYX2, producing a niobium concentrate grading 26.87% Nb2O5 at 88.31% recovery, with a corresponding recovery of 80.86% from the raw ore. It is concluded that the niobium minerals in the ore can be effectively recovered.

niobium ore  /  pyrochlore  /  niobite  /  pretreatment  /  flotation  /  process mineralogy  /  desliming
Chao LIU, Hongxi HU, Zhonghan ZHANG, Wei HUANG, Jiping YANG, Zhiqiang CHEN. Process Mineralogy and Flotation Test of Niobium-Bearing Ore from Africa[J]. Mining and Metallurgical Engineering, 2025 , 45 (4) : 95 -99 . DOI: 10.3969/j.issn.0253-6099.2025.04.017
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Year 2025 volume 45 Issue 4
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doi: 10.3969/j.issn.0253-6099.2025.04.017
  • Receive Date：2025-02-18
  • Online Date：2026-03-05
  • Published：2025-08-01
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  • Received：2025-02-18
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Affiliations
    1.Institute of Resources Utilization and Rare Earth Development, Guangdong Academy of Sciences, Guangzhou 510651, Guangdong, China
    2.State Key Laboratory of Rare Metals Separation and Comprehensive Utilization, Guangzhou 510651, Guangdong, China
    3.Guangdong Provincial Key Laboratory of Mineral Resource and Comprehensive Utilization, Guangzhou 510651, Guangdong, China
    4.Shenghe Resources (Lianyungang) New Materials Technology Co., Ltd., Lianyungang, 222042, Jiangsu, 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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