日本におけるディスプロシウムの物質フロー分析

• 施 維

  東京大学工学部マテリアル工学科

• 醍醐 市朗

  東京大学大学院工学系研究科

• 松野 泰也

  東京大学大学院工学系研究科

• 足立 芳寛

  東京大学大学院工学系研究科

書誌事項

タイトル別名

• Substance Flow Analysis of Dysprosium in Japan
• ニホン ニ オケル ディスプロシウム ノ ブッシツ フロー ブンセキ

抄録

  Recently, recycling of rare metals has been of great interest because of the rapid growth in their demands. Substance flow analysis (SFA) is a useful tool to figure out the flow of substance in designated area. SFA is sometimes used to quantify the recycling potentials of the substances. However, few SFA has so far been conducted for rare metals. In this paper, we focused on Dy and conducted SFA of Dy in Japan. The end use of Dy was categorized into 4 groups; automobiles, electronic home appliances, factory automation and voice coil motor, which were further subdivided into 10 categories. We estimated time-series data about the domestic consumption and input of Dy in each end use during 1987-2008 in Japan using bottom-up approach. Stock in-use of Dy was estimated as the recycle potential by using the dynamic SFA, in which the time-series data and lifetime distribution of each end use were used. As a result, the stock in-use of Dy in Japan was estimated as approximately 890-1100 t in 2008. It was also found that, the amount of domestic input (170-220 t) was half of the amount of import (360-400 t) because a lot of Dy contained in final products were exported from Japan.<br>

収録刊行物

• 日本金属学会誌

  日本金属学会誌 74 (11), 758-765, 2010

  公益社団法人 日本金属学会

キーワード

• substance flow analysis
• dysprosium
• neodymium magnet
• recycle potential
• in-use stock

詳細情報

• CRID: 1390001206477866880
• NII論文ID: 10027472439
• NII書誌ID: AN00187860
• DOI: 10.2320/jinstmet.74.758
• ISSN: 18806880
• ISSN: 24337501
• ISSN: 00214876
• NDL書誌ID: 10878575
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10878575
• Web Site: https://www.jstage.jst.go.jp/article/jinstmet/74/11/74_11_758/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可