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Coupling relationship between multicomponent recovery of rare earth tailings

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Abstract

About 90 % rare earth minerals and many other valuable minerals are heaped as iron tailings without comprehensive utilization. In order to comprehensively recover these valuable minerals, in a view of the valuable ore type of Baotou Steel tailing and embedded features, valuable components flow and their respective recovery coupling relationship in beneficiation flowsheet were analyzed; process flows and parameters which could give consideration to four kinds of components were determined. TFe, rare earth oxide (REO), niobium and fluorite recoveries could reach 72.70 %, 81.84 %, 78.58 % and 60.18 % in low-intensity/high-intensity magnetic separation, respectively. High-intensity magnetic concentration was treated by REO direct flotation; the recovery is 75.43 %, on the base of which Fe could be separated completely from Nb. The underflow was treated by reduction roasting–low-intensity magnetic separation. And the relationship between the recoveries of these valuable components was also discussed.

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Acknowledgments

This study was financially supported by the National High Technology Research and Development Program of China (No. 2012AA062402).

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Authors and Affiliations

  1. School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Yue Zhang, Hai Lin, Ying-Bo Dong, Xiao-Fang Xu, Xin Wang & Yue-Jiao Gao

  2. Key Laboratory of High-Efficient Mining and Safety of Metal Mines, Ministry of Education, University of Science and Technology Beijing, Beijing, 100083, China

    Yue Zhang, Hai Lin, Ying-Bo Dong, Xiao-Fang Xu, Xin Wang & Yue-Jiao Gao

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  1. Yue Zhang
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  2. Hai Lin
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  3. Ying-Bo Dong
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  4. Xiao-Fang Xu
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  5. Xin Wang
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  6. Yue-Jiao Gao
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Correspondence to Hai Lin.

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Zhang, Y., Lin, H., Dong, YB. et al. Coupling relationship between multicomponent recovery of rare earth tailings. Rare Met. 36, 220–228 (2017). https://doi.org/10.1007/s12598-015-0489-2

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  • DOI: https://doi.org/10.1007/s12598-015-0489-2

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