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Phosphate Decomposition by Alkaline Roasting to Concentrate Rare Earth Elements from Monazite of Bangka Island, Indonesia

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Abstract

The article considers extraction of rare elements from monazite and their leaching. In this study, phosphate decomposition process was conducted using alkaline roasting. The results showed that the phosphate decomposition of monazite from Bangka Island increased with increasing temperature and increasing monazite/NaOH mass ratio. Analysis of the decomposition rate on the basis of shrinking core model revealed that the rate could be appropriately expressed by the equation based on mixed control of diffusion through a residual layer and surface chemical reaction.

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Acknowledgments

Highly appreciation is delivered to the Department of Chemical Engineering Universitas Gadjah Mada and National Nuclear Energy Agency for the limitless support for this research to conduct.

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Authors and Affiliations

  1. Department of Chemical Engineering (Advanced Material and Sustainable Mineral Processing Research Group), Faculty of Engineering, Universitas Gadjah MadaYogyakarta, Yogyakarta, 55281, Indonesia

    Tri Purwanti, Indra Perdana & Himawan Tri Bayu Murti Petrus

  2. Center for Nuclear Minerals Technology, National Nuclear Energy Agency, Jakarta, 12440, Indonesia

    Tri Purwanti

  3. Center for Accelerator Science and Technology, National Nuclear Energy Agency, Yogyakarta, 55281, Indonesia

    Mochamad Setyadji

  4. Research Division for Mineral Technology, Indonesian Institute of Sciences (LIPI), Tanjung Bintang, Lampung Selatan, Indonesia

    Widi Astuti

  5. Unconventional Geo-Resources Research Group, Faculty of Engineering, Universitas Gadjah Mada, Yogyakarta, 55281, Indonesia

    Himawan Tri Bayu Murti Petrus

Authors
  1. Tri Purwanti
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  2. Mochamad Setyadji
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  3. Widi Astuti
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  4. Indra Perdana
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  5. Himawan Tri Bayu Murti Petrus
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Corresponding author

Correspondence to Himawan Tri Bayu Murti Petrus.

Additional information

Published in Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 2020, No. 3, pp. 166–714.

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Purwanti, T., Setyadji, M., Astuti, W. et al. Phosphate Decomposition by Alkaline Roasting to Concentrate Rare Earth Elements from Monazite of Bangka Island, Indonesia. J Min Sci 56, 477–485 (2020). https://doi.org/10.1134/S1062739120036763

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  • DOI: https://doi.org/10.1134/S1062739120036763

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