Mineralogical characterization of Indonesian rare earth elements from secondary resource (zircon tailings)

IF 1.6 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Transition Metal Chemistry Pub Date : 2024-08-26 DOI:10.1007/s11243-024-00603-9

Gyan Prameswara, Iga Trisnawati, Panut Mulyono, Agus Prasetya, Himawan Tri Bayu Murti Petrus

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引用次数: 0

Abstract

The increase in demand for products based on rare earth metals has increased because of their recent surge in usage. Additionally, primary sources of rare earth metals, such as bastnaesite, are scarce. Therefore, it is necessary to characterize secondary sources to explore the potential of other rare earth metal sources to overcome their scarcity. This study utilizes zircon tailings from zircon processing in Indonesia, which are the result of magnetic separation of zircon sand (magnetic particles). An analysis of the elemental and mineral composition, as well as the particle size distribution of the tailings, was conducted. The results revealed a significant ZrO₂ composition of 10.3%, with 14.11% CeO₂ and 11.47% Y₂O₃ as the major oxides. Additionally, ThO₂ was present at 2%, which could be considered for the processing of zircon tailings for rare earth metal refinement because of its radioactive properties. The mineral phases indicate that the tailings consist mainly of xenotime, monazite, and zircon. Additionally, a rare earth metal-bearing mineral, cerianite, is present. The concentration of rare earth metals is greater for larger particles, whereas that of zircon is greater for smaller particles. These findings can be used to determine the next steps in the rare earth metal purification or extraction process.

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印度尼西亚二次资源（锆石尾矿）中稀土元素的矿物学特征

由于最近稀土金属的使用量激增，对基于稀土金属的产品的需求也随之增加。此外，稀土金属的原生资源（如巴斯奈斯特）十分稀缺。因此，有必要对次生资源进行表征，以探索其他稀土金属资源的潜力，克服其稀缺性。本研究利用了印度尼西亚锆石加工过程中产生的锆石尾矿，这些尾矿是锆石砂（磁性颗粒）磁分离的结果。对尾矿的元素和矿物成分以及粒度分布进行了分析。结果表明，主要氧化物中 ZrO2 占 10.3%，CeO2 占 14.11%，Y2O3 占 11.47%。此外，ThO2 的含量为 2%，由于其放射性特性，可考虑将锆石尾矿用于稀土金属提炼。矿物相表明，尾矿主要由氙石、独居石和锆石组成。此外，还存在一种含稀土金属的矿物--铈镧矿。较大颗粒的稀土金属浓度较高，而较小颗粒的锆石浓度较高。这些发现可用于确定稀土金属提纯或萃取过程的下一步骤。

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来源期刊

Transition Metal Chemistry 化学-无机化学与核化学

CiteScore

3.60

自引率

0.00%

发文量

审稿时长

1.3 months

期刊介绍： Transition Metal Chemistry is an international journal designed to deal with all aspects of the subject embodied in the title: the preparation of transition metal-based molecular compounds of all kinds (including complexes of the Group 12 elements), their structural, physical, kinetic, catalytic and biological properties, their use in chemical synthesis as well as their application in the widest context, their role in naturally occurring systems etc. Manuscripts submitted to the journal should be of broad appeal to the readership and for this reason, papers which are confined to more specialised studies such as the measurement of solution phase equilibria or thermal decomposition studies, or papers which include extensive material on f-block elements, or papers dealing with non-molecular materials, will not normally be considered for publication. Work describing new ligands or coordination geometries must provide sufficient evidence for the confident assignment of structural formulae; this will usually take the form of one or more X-ray crystal structures.