Occurrence State and Potential Recycling Evaluation of Lithium from Fluorite Tailings

FU Qiang; WANG Qing; WEN Ligang

doi:10.13779/j.cnki.issn1001-0076.2022.06.017

2022 Vol. 42, No. 6

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FU Qiang, WANG Qing, WEN Ligang. Occurrence State and Potential Recycling Evaluation of Lithium from Fluorite Tailings[J]. Conservation and Utilization of Mineral Resources, 2022, 42(6): 141-145. doi: 10.13779/j.cnki.issn1001-0076.2022.06.017

Citation:

FU Qiang, WANG Qing, WEN Ligang. Occurrence State and Potential Recycling Evaluation of Lithium from Fluorite Tailings[J]. Conservation and Utilization of Mineral Resources, 2022, 42(6): 141-145. doi: 10.13779/j.cnki.issn1001-0076.2022.06.017

Occurrence State and Potential Recycling Evaluation of Lithium from Fluorite Tailings

1.
BGRIMM Technology Group, Beijing 100160, China
2.
State Key Laboratory of Process Automation in Mining & Metallurgy, Beijing 100160, China
3.
Beijing Key Laboratory of Process Automation in Mining & Metallurgy, Beijing 100160, China

Received Date: 17 June 2022

Publish Date: 26 December 2022

Abstract

Abstract

The occurrence state of lithium in fluorite tailings in Zhejiang was studied while the availability of lithium recovery was evaluated. The process mineralogy research revealed that lithium mainly existed in zinnwaldite, muscovite, and phlogopite, and the average lithium contents in the three types of mica minerals were 4.16%, 0.47% and 0.51%, respectively, and 62.47% of lithium was distributed in zinnwaldite which should be strengthened. However, due to the similar flotation performance of zinnwaldite, muscovite, and phlogopite, the flotation process results in the co-enrichment of these minerals, making it difficult to obtain a high-quality lithium concentrate. Nonetheless, qualified iron lithium mica concentrate can be separated from mica concentrate by high intensity magnetic separation. In addition, the technique can also be used to treat the ore by separating zinnwaldite, limonite and pyrolusite into magnetic products, followed by cationic flotation to obtain an iron-limonite concentrate. Overall, the technical index for either flotation-magnetic separation or magnetic separation-flotation requires further testing to determine its efficacy.
- fluorite tailings /
- process mineralogy /
- zinnwaldite /
- occurrence state /
- recycling potential

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References

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