Selective sulfurization and magnetic separation of uranium and rare-earth oxides mixture

Nobuaki Sato, Soichi Sato

研究成果: Conference contribution

抄録

For the recovery of uranium from spent nuclear fuel, selective sulfurization of uranium (UO2) and rare-earth oxides R 2O3 (R=Nd, Eu) using sulfurizing reagents, such as H 2S and CS2 was examines followed by the magnetic separation of sulfurized compounds of rare-earths. The R2O 3 for Nd and Eu were selectively sulfurized by CS2 at 500°C forming Nd2S3 and EuS, respectively, while uranium remains as UO2. Effects of sulfurizing temperature, time and agents were also investigated. After dispersing the mixture of UO2, EuS and Nd2S3 powders into deionized water, uranium was separated from the rare-earths by passing this solvent through magnetic filter with the application of 0.5T magnetic field. Effect of the number of filtration was also discussed.

本文言語English
ホスト出版物のタイトルREWAS'04 - Global Symposium on Recycling, Waste Treatment and Clean Technology - Proceedings
編集者I. Gaballah, B. Mishra, R. Solozabal, M. Tanaka
ページ2683-2688
ページ数6
出版ステータスPublished - 2005 12 1
イベントREWAS'04 - Global Symposium on Recycling, Waste Treatment and Clean Technology - Madrid, Spain
継続期間: 2004 9 262004 9 29

出版物シリーズ

名前REWAS'04 - Global Symposium on Recycling, Waste Treatment and Clean Technology

Other

OtherREWAS'04 - Global Symposium on Recycling, Waste Treatment and Clean Technology
国/地域Spain
CityMadrid
Period04/9/2604/9/29

ASJC Scopus subject areas

  • 工学(全般)

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