Separation of Rare Earth and Aluminium by Long-chain Polymeric Phosphate Complexation Precipitation

LI Jinhui; CHU Yuhang; LONG Guangwu; LIU Wenxin; LIU Jinbiao; WANG Ruixiang; XU Zhifeng

doi:10.13779/j.cnki.issn1001-0076.2021.05.002

2021 Vol. 41, No. 5

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Article navigation > Conservation and Utilization of Mineral Resources > 2021 > 41(5): 12-17

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LI Jinhui, CHU Yuhang, LONG Guangwu, LIU Wenxin, LIU Jinbiao, WANG Ruixiang, XU Zhifeng. Separation of Rare Earth and Aluminium by Long-chain Polymeric Phosphate Complexation Precipitation[J]. Conservation and Utilization of Mineral Resources, 2021, 41(5): 12-17. doi: 10.13779/j.cnki.issn1001-0076.2021.05.002

Citation:

LI Jinhui, CHU Yuhang, LONG Guangwu, LIU Wenxin, LIU Jinbiao, WANG Ruixiang, XU Zhifeng. Separation of Rare Earth and Aluminium by Long-chain Polymeric Phosphate Complexation Precipitation[J]. Conservation and Utilization of Mineral Resources, 2021, 41(5): 12-17. doi: 10.13779/j.cnki.issn1001-0076.2021.05.002

Separation of Rare Earth and Aluminium by Long-chain Polymeric Phosphate Complexation Precipitation

1.
Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China
2.
President Office, Jiangxi College of Applied Technology, Ganzhou 341000, Jiangxi, China

More Information

Corresponding author: WANG Ruixiang, wrx9022@163.com

Received Date: 11 October 2021

Publish Date: 25 October 2021

Abstract

Abstract

In the leaching process of ionic rare earth ore, a large number of non-rare earth impurities such as aluminum ions will also enter the leaching solution. In this paper, the removal of impurity aluminum ions in the rare earth leaching solution was studied. The rare earth elements in the feed solution were selectively precipitated by polybutylene phosphate. The effects of solution pH, amount of polybutylene phosphate, reaction time and reaction temperature on the removal effect of aluminum were investigated respectively. The results show that: polybutylene phosphate is used as a complex precipitation agent, the pH value of the simulated feed liquid is controlled to 2.5, the polybutylene phosphate dosages is m(REG monomer): m(RE³⁺)= 12:1 equivalent is added, the reaction time is 10 min, the reaction temperature At 50 ℃, the precipitation rate of rare earth is 91.35%, and the precipitation rate of aluminum is 11.22%, which effectively separates rare earth from aluminum.
- rare earth /
- aluminum removal /
- polybutylene phosphate /
- complex precipitation /
- separation

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References

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