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Comparison of dysprosium security strategies in Japan for 2010–2030

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  • Seo, Yuna
  • Morimoto, Shinichirou

Abstract

Dysprosium (Dy) is a strategic rare-earth element with many uses in modern technology and an extremely limited supply. We compared the effectiveness of two different strategies for reducing total demand for Dy in Japan during the period 2010–2030: development of low-Dy REE (NdFeB) magnets and a program to promote recycling of REE magnets. First we performed a substance flow analysis based on a bottom-up estimation of the Dy inventory in Japan. This enabled us to construct a data set for the forecasts of future demand that could be used to model the outcome of strategies for Dy demand at each stage of Dy flow. For the low-Dy magnet development scenario, the reduction in the proportion of Dy in NdFeB magnets ranged from 0.8% to 5% in end-use products. On that of recycling promotion, recycling rates of end-use products ranged from 5% to 30% over the years. A baseline forecast of Dy demand was made using historical data. We found that the strategy of low-Dy magnet development would be much more effective in reducing Dy demand than recycling promotion.

Suggested Citation

  • Seo, Yuna & Morimoto, Shinichirou, 2014. "Comparison of dysprosium security strategies in Japan for 2010–2030," Resources Policy, Elsevier, vol. 39(C), pages 15-20.
    • Handle: RePEc:eee:jrpoli:v:39:y:2014:i:c:p:15-20
    DOI: 10.1016/j.resourpol.2013.10.007
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    References listed on IDEAS

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    1. Spatari, S. & Bertram, M. & Gordon, Robert B. & Henderson, K. & Graedel, T.E., 2005. "Twentieth century copper stocks and flows in North America: A dynamic analysis," Ecological Economics, Elsevier, vol. 54(1), pages 37-51, July.
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    Cited by:

    1. Zhang, Kuangyuan & Kleit, Andrew N. & Nieto, Antonio, 2017. "An economics strategy for criticality – Application to rare earth element Yttrium in new lighting technology and its sustainable availability," Renewable and Sustainable Energy Reviews, Elsevier, vol. 77(C), pages 899-915.
    2. Shigetomi, Yosuke & Nansai, Keisuke & Kagawa, Shigemi & Kondo, Yasushi & Tohno, Susumu, 2017. "Economic and social determinants of global physical flows of critical metals," Resources Policy, Elsevier, vol. 52(C), pages 107-113.
    3. Kim, Juhan & Lee, Jungbae & Kim, BumChoong & Kim, Jinsoo, 2019. "Raw material criticality assessment with weighted indicators: An application of fuzzy analytic hierarchy process," Resources Policy, Elsevier, vol. 60(C), pages 225-233.
    4. Hatayama, Hiroki & Tahara, Kiyotaka, 2015. "Evaluating the sufficiency of Japan׳s mineral resource entitlements for supply risk mitigation," Resources Policy, Elsevier, vol. 44(C), pages 72-80.
    5. Li, Yizhou & Wang, Yibo & Ge, Jianping, 2023. "Tracing the material flows of dysprosium in China from 2010 to 2020: An investigation of the partition characteristics of different rare earth mining areas," Resources Policy, Elsevier, vol. 85(PB).
    6. Schulze, Rita & Buchert, Matthias, 2016. "Estimates of global REE recycling potentials from NdFeB magnet material," Resources, Conservation & Recycling, Elsevier, vol. 113(C), pages 12-27.
    7. Elshkaki, Ayman & Graedel, T.E., 2014. "Dysprosium, the balance problem, and wind power technology," Applied Energy, Elsevier, vol. 136(C), pages 548-559.
    8. Riddle, Matthew & Macal, Charles M. & Conzelmann, Guenter & Combs, Todd E. & Bauer, Diana & Fields, Fletcher, 2015. "Global critical materials markets: An agent-based modeling approach," Resources Policy, Elsevier, vol. 45(C), pages 307-321.

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