Geochemistry of  Rare Earth and Trace Elements in Rare Earth Concentrate from Sichuan Province and the Significance of the Exploitation and Utilization

Zhi ZHAO; Xiao-fang FU; Xi-jie REN; Yi-ping FANG; Li-wei HOU; Deng-hong WANG; Li-jun LIU

2013 Vol. 32, No. 5

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Zhi ZHAO, Xiao-fang FU, Xi-jie REN, Yi-ping FANG, Li-wei HOU, Deng-hong WANG, Li-jun LIU. Geochemistry of Rare Earth and Trace Elements in Rare Earth Concentrate from Sichuan Province and the Significance of the Exploitation and Utilization[J]. Rock and Mineral Analysis, 2013, 32(5): 810-816.

Citation:

Geochemistry of Rare Earth and Trace Elements in Rare Earth Concentrate from Sichuan Province and the Significance of the Exploitation and Utilization

1.
Key Laboratory of Metallogeny and Mineral Assessment, Ministry of Land and Resources,Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China
2.
Sichuan Geological Survey, Chengdu 610081, China
3.
Panxi Geological Team, Xichang 615000, China
4.
Development and Research Center, Geological Survey of China, Beijing 100037, China
5.
College of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China

Received Date: 26 July 2013

Accepted Date: 05 August 2013

Abstract

Abstract

Sichuan Province is one of the most important provinces in China for light rare earth element (LREE) resources, where has been produced a large amount of rare earth concentrate in the past 20 years. Rare earth elements ΣREEs) and other useful elements in rare earth concentrates are very important for resource evaluation and enterprise survival. In this paper, geochemistry of rare earth elements (REEs) and trace elements in samples from the A, B and C REE deposits has been studied. The results show that the content of REEs and trace elements in rare earth concentrate samples are changed in different deposit, enterprise and different mineral dressing process. The lowest level of ΣREEs is from A (ΣREEs=41.96%), the highest level is from C (ΣREEs=55.83%). ΣREEs of magnetic concentrate (ΣREEs=49.96%) is higher than flotation concentrate (ΣREEs=41.57%), and ΣREEs from Jia Company (ΣREEs=48.35%) is higher than from Yi Company (ΣREEs=42.92%). The REE distribution patterns of concentrate sample are inherited from rare earth ores while Tb and Yb are depleted, indicating that the mineral dressing process may lead to loss of these elements. REEs are enriched in concentrate sample, and Mo, Bi, Pb, Ga, Th, U, W are also enriched. Especially, Mo and Ga are in cut-off grade. These results indicate that it is necessary to increase REE grade of rare earth concentrate, and to take appropriate measures to reclaim higher concentration elements.
- rare earth concentrate in Sichuan Province /
- rare earth elements /
- trace elements /
- rational use of resources

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References

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