論文

2015年

REY-Rich Mud: A Deep-Sea Mineral Resource for Rare Earths and Yttrium

Handbook on the Physics and Chemistry of Rare Earths
  • Kentaro Nakamura
  • ,
  • Koichiro Fujinaga
  • ,
  • Kazutaka Yasukawa
  • ,
  • Yutaro Takaya
  • ,
  • Junichiro Ohta
  • ,
  • Shiki Machida
  • ,
  • Satoru Haraguchi
  • ,
  • Yasuhiro Kato

46
開始ページ
79
終了ページ
127
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/B978-0-444-63260-9.00268-6
出版者・発行元
Elsevier

This chapter focuses on newly discovered extensive deposits of deep-sea mud containing high concentrations of rare-earth elements and yttrium (REY). The deep-sea REY-rich muds are found in pelagic region of the Pacific Ocean and very recently also in the Indian Ocean. REY-rich muds are characterized by the following five advantages: (1) tremendous resource potential by virtue of their wide distribution, (2) high REY concentrations with significant heavy REE enrichment, (3) a stratiform distribution that allows relatively simple and cost-effective exploration, (4) very low concentrations of radioactive elements such as Th and U, and (5) ease of extraction of REY by acid leaching. These features demonstrate that the REY-rich mud could constitute a highly promising REY resource for the future. A system to mine REY-rich muds is also presented. This system can be developed based on a system developed and tested for sulfide-rich muds in the Red Sea and manganese nodules in the Pacific Ocean, although pressurized air-lift system will be needed to lift REY-rich muds from very deep water.

リンク情報
DOI
https://doi.org/10.1016/B978-0-444-63260-9.00268-6

エクスポート
BibTeX RIS