Leaching Test and Impurity Removal of Rare Earth

Wang Haolin; Wang Qiangqiang; Wang Liping; Yu Xinyang

doi:10.3969/j.issn.1000-6532.2018.01.013

2018 No. 1

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Wang Haolin, Wang Qiangqiang, Wang Liping, Yu Xinyang. Leaching Test and Impurity Removal of Rare Earth[J]. Multipurpose Utilization of Mineral Resources, 2018, (1): 61-65. doi: 10.3969/j.issn.1000-6532.2018.01.013

Citation:

Wang Haolin, Wang Qiangqiang, Wang Liping, Yu Xinyang. Leaching Test and Impurity Removal of Rare Earth[J]. Multipurpose Utilization of Mineral Resources, 2018, (1): 61-65. doi: 10.3969/j.issn.1000-6532.2018.01.013

Leaching Test and Impurity Removal of Rare Earth

Publish Date: 01 February 2018

Abstract

Abstract

The ion phase content of TREO in a certain rare earth was 0.1%,and the relevant conditional test were carried on from aspects of leaching agent concentration,solid-liquid ratio leaching and leaching rate by using ammonium sulfate as leaching agent,obtaining the best leaching condition and make the relevant chemical analysis of impurity for the rare earth leaching agent from the layer of lon concentration simultaneously.In the condition of the leaching solution rare earth concentration by 1.10 g/L,pH =4.21 or so,the main impurity is Al2O3 by the content of 0.42 g / L,the test should not only meet the effective removal of Al2O3 by ammonium bicarbonate,but also to minimize the loss of rare earth caused by the precipitation of carbonate rare earth.The results showed that the optimum pH value was 5.0,and the recovery rate of rare earth precipitation was 99.706%.

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