Experimental Study on Recovering Lepidolite from a Tailings in Jiangxi Province

LV Haozi; WANG Chenghang; LI Qiang; HU Zhen; LI Bo

doi:10.13779/j.cnki.issn1001-0076.2024.03.009

2024 Vol. 44, No. 3

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Article navigation > Conservation and Utilization of Mineral Resources > 2024 > 44(3): 89-94

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LV Haozi, WANG Chenghang, LI Qiang, HU Zhen, LI Bo. Experimental Study on Recovering Lepidolite from a Tailings in Jiangxi Province[J]. Conservation and Utilization of Mineral Resources, 2024, 44(3): 89-94. doi: 10.13779/j.cnki.issn1001-0076.2024.03.009

Citation:

LV Haozi, WANG Chenghang, LI Qiang, HU Zhen, LI Bo. Experimental Study on Recovering Lepidolite from a Tailings in Jiangxi Province[J]. Conservation and Utilization of Mineral Resources, 2024, 44(3): 89-94. doi: 10.13779/j.cnki.issn1001-0076.2024.03.009

Experimental Study on Recovering Lepidolite from a Tailings in Jiangxi Province

1.
Institute of Resources Utilization and Rare Earth Development, Guangdong Academy of Sciences, Guangzhou 510651, Guangdong, China
2.
Sate Key Laboratory of Separation and Comprehensive Utilization of Rare Metals, Guangzhou 510651, Guangdong, China
3.
Guangdong Provincial Key Laboratory of Development and Comprehensive Utilization of Mineral Resources, Guangzhou 510651, Guangdong, China
4.
Guangdong Provincial Research Center of Engineering and Technology for Comprehensive Utilization of mineral resources, Guangzhou 510651, Guangdong, China

More Information

Corresponding author: WANG Chenghang, wchhang@126.com

Received Date: 23 April 2024

Publish Date: 15 June 2024

Abstract

Abstract

Through research on process mineralogy and the recovery of lepidolite, an experimental study was conducted on the tailings from Jiangxi Province. The main elements and mineral composition of the sample were identified, and the occurrence states of Li₂O−bearing minerals were determined. Tests were performed on grinding, desliming, and the dosages of lauryl amine, GY503, and sodium silicate. The results indicated that the Li₂O grade of the sample was 0.276%, with the main valuable mineral being lepidolite (or lithian muscovite). Flotation condition tests showed that desliming improved flotation efficiency, and the suitable grinding fineness for the ore was 60% passing 0.074 mm. In roughing flotation, the optimal dosages of dodecyl amine, GY503, and sodium silicate were 200 g/t, 2000 g/t, and 500 g/t, respectively. The flotation closed−circuit test, consisting of one roughing, one cleaning, and two scavenging steps, yielded concentrates with a Li₂O grade of 1.46% and a recovery of 82.81%. Furthermore, high−gradient magnetic separation further improved the quality of the lepidolite flotation concentrates, yielding a magnetic concentrate with a Li₂O grade of 2.02% and a recovery of 40.71%. Thus, the effective utilization of the low−grade lepidolite ore was realized.
- lepidolite /
- flotation /
- magnetic separation /
- tailings

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References

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