Experiment on New Comprehensive Recovery of Micro-fine Particle Low-grade Refractory Tantalum Niobium Lithium Resources

WANG Qiangqiang; LI Zhenfei; GUO Yuefu; SHEN Xinchun; LAI Jiquan; ZHANG Ting

doi:10.12476/kczhly.202409100258

2025 Vol. 46, No. 5

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Article navigation > Multipurpose Utilization of Mineral Resources > 2025 > 46(5): 47-53, 71

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WANG Qiangqiang, LI Zhenfei, GUO Yuefu, SHEN Xinchun, LAI Jiquan, ZHANG Ting. Experiment on New Comprehensive Recovery of Micro-fine Particle Low-grade Refractory Tantalum Niobium Lithium Resources[J]. Multipurpose Utilization of Mineral Resources, 2025, 46(5): 47-53, 71. doi: 10.12476/kczhly.202409100258

Citation:

WANG Qiangqiang, LI Zhenfei, GUO Yuefu, SHEN Xinchun, LAI Jiquan, ZHANG Ting. Experiment on New Comprehensive Recovery of Micro-fine Particle Low-grade Refractory Tantalum Niobium Lithium Resources[J]. Multipurpose Utilization of Mineral Resources, 2025, 46(5): 47-53, 71. doi: 10.12476/kczhly.202409100258

Experiment on New Comprehensive Recovery of Micro-fine Particle Low-grade Refractory Tantalum Niobium Lithium Resources

1.
Ganzhou Nonferrous Metallurgy Research Institute Co., Ltd., Ganzhou, Jiangxi 341000, China
2.
Yichun Tantalum Niobium Ore Co., Ltd., Yichun, Jiangxi 336000, China

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Corresponding author: SHEN Xinchun, 286922417@qq.com

Received Date: 10 September 2024

Publish Date: 25 October 2025

Abstract

Abstract

The fine-grained low-grade tail mud of the Yichun tantalum niobium ore contains 0.17% Li₂O, 0.007 1% Ta₂O₅, 0.007 8% Nb₂O₅, and whiteness is 24.20%. Mineralogical studies indicate that tantalum-niobium minerals and lithium mica particles in the tailings are mainly distributed below -20 μm, while feldspar particles are mainly distributed below -45 μm, which is a fine grained and low grade mineral, making resource recovery challenging. Through the beneficiation process of "slurry magnetic separation for iron removal-vibrating cone recovery of tantalum-niobium-flotation to improve feldspar brightness-flotation recovery of lithium mica for the comprehensive recovery of this tailings, experiments achieved a tantalum-niobium concentrate (TaNb)₂O₅ grade of 27.75%, lithium mica concentrate Li₂O grade of 1.57%, with a recovery rate of 42.76%. The feldspar had an Al₂O₃ grade of 14.92%, Fe₂O₃ grade of 0.045%, brightness of 68.70%, and total alkali content of 7.91%. This process successfully achieved comprehensive recovery of tantalum-niobium, lithium, and feldspar resources.
- mineral processing engineering /
- low-grade refractory tail mud /
- sizing machine /
- comprehensive recovery /
- micro-fine particle minerals

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References

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